url stringlengths 30 167 | question stringlengths 0 11.1k | answer stringlengths 0 11.3k | scraped_at int64 1.78B 1.78B |
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https://www.sarthaks.com/3859638/which-one-of-the-following-appropriate-example-sexual-deceit-sea-anemone-and-clown-fish | Which one of the following is an appropriate example of sexual deceit? (1) Sea anemone and clown fish (2) Female wasp and fig (3) Ophrys and bumblebee (4) Cuckoo and crow | The correct option is (3) Ophrys and bumblebee Female wasp and fig – Mutualism Ophrys and bumblebee – Sexual deceit Sea anemone and clown fish – Commensalism Cuckoo and crow – Brood Parasitism | 1,780,498,582 |
https://www.sarthaks.com/3859577/draw-fixture-of-20-teams-in-knockout-cum-leaguetournament | Draw fixture of 20 teams in knockout cum league tournament. | A “knockout-cum-league” format usually means: first a league (group stage), then knockout rounds. With 20 teams, a clean structure is: Group (League) Stage Divide 20 teams into 4 groups of 5 teams each. Groups: Group A: A1, A2, A3, A4, A5 Group B: B1, B2, B3, B4, B5 Group C: C1, C2, C3, C4, C5 Group D: D1, D2, D3, D4, ... | 1,780,498,605 |
https://www.sarthaks.com/3859653/which-of-the-following-is-not-example-convergent-evolution-wings-butterflies-and-birds | Which of the following is not an example of convergent evolution? (1) Wings of butterflies and birds (2) Flippers of penguins and dolphins (3) Fore limbs of whales and bats (4) Eyes of octopuses and mammals | The correct option is (3) Fore limbs of whales and bats Fore limbs of whales and bats are examples of divergent evolution that show homology. | 1,780,498,605 |
https://www.sarthaks.com/3859596/thin-wire-length-linear-mass-density-bent-into-circular-ring-plane-with-centre-shown-figure | A thin wire of length 'L' and linear mass density 'm' is bent into a circular ring (in x-y plane) with centre 'C' as shown in figure. The moment of inertia of the ring about an axis yy' will be: (1) \(\frac{3 \mathrm{~mL}^{3}}{8 \pi}\) (2) \(\frac{3 \mathrm{~mL}^{2}}{8 \pi^{2}}\) (3) \(\frac{3 \mathrm{~mL}^{3}}{8 \pi^{... | Correct Option is: (3) \(\frac{3 \mathrm{~mL}^{3}}{8 \pi^{2}}\) Mass of thin wire = (Linear mass density) \(\times\) (Length) \(\Rightarrow\) M = mL L = 2\( \pi \)r, where r = radius of circular ring \(=\frac{L}{2 \pi}\) Using parallel axis theorem, \(I_{y y^{\prime}}=I_{C M}+M r^2=\frac{M r^2}{2}+M r^2=\frac{3}{2} M r... | 1,780,498,605 |
https://www.sarthaks.com/3859589/a-galvanometer-of-resistance-100-gives-full-scale-deflection-for-a-current-of-1-ma | A galvanometer of resistance 100 Ω gives full scale deflection for a current of 1 mA. It is converted into an ammeter of range 0 -10 A. The shunt required is : (1) \(0.001\, \Omega\) (2) \(0.10\, \Omega\) (3) \(1.0\, \Omega\) (4) \(0.01\, \Omega\) | Correct Option is: (4) \(0.01\, \Omega\) Given that \(\mathrm{R}_{\mathrm{g}}=100 \Omega\) \(\mathrm{I}_{\mathrm{g}}=1 \mathrm{~mA}\) \(\mathrm{I}=10 \mathrm{~A}\) \(\mathrm{S}=\frac{\mathrm{I}_{\mathrm{g}} \mathrm{R}_{\mathrm{g}}}{\left(\mathrm{I}-\mathrm{I}_{\mathrm{g}}\right)}=\frac{10^{-3}(100)}{\left(10-10^{-3}\ri... | 1,780,498,605 |
https://www.sarthaks.com/3859581/two-statements-are-given-below-a-when-the-forward-bias-voltage-across-a-p-n-junction | Two statements are given below : A. When the forward bias voltage across a p-n junction diode increases above a certain threshold voltage, the diode current increases significantly. B. This current is called reverse saturation current. Choose the correct answer from the options given below: (1) Both Statements A and B ... | Correct Option is: (3) Statement A is true, but Statement B is false. V – I characteristics of a forward-biased junction diode. When forward bias voltage increases beyond threshold voltage, diode current increases significantly. This is not reverse saturation current. | 1,780,498,605 |
https://www.sarthaks.com/3859571/which-the-following-statements-about-the-rayleigh-criterion-theta-lambda-over-correct | Which of the following statements about the Rayleigh criterion \(\theta≈{1.22\lambda\over d}\) are correct (1) Smaller \(\theta\) means better resolving power. (2) Using shorter wavelength improves resolution. (3) Using a larger aperture diameter improves resolution. A. (1) and (2) only. B. (1) and (3) only. C. (2) and... | The correct option is D. (1), (2) and (3). From the Rayleigh criterion: \(\theta \approx 1.22 \frac{\lambda}{d}\) (1) True – Smaller θ (angular separation) means two objects can be distinguished more clearly → better resolving power. (2) True – Decreasing wavelength λ reduces θ → improves resolution. (3) True – Increas... | 1,780,498,605 |
https://www.sarthaks.com/3859572/in-bohrs-model-of-the-hydrogen-atom-the-radius-of-the-electron-orbit-in-the-n-3-state-is | In Bohr's model of the hydrogen atom, the radius of the electron orbit in the \(n=3\) state is ___. A. \(r_1\) B. \(3r_1\) C. \(6r_1\) D. \(9r_1\) | The correct option is D. 9r1 In Bohr model of the atom, the radius of the nth orbit is given by: \(r_n = n^2 r_1\) where r1 is the radius of the first orbit. For n = 3: \(r_3 = 3^2 r_1 = 9 r_1\) So, the radius in the third orbit is 9r1. | 1,780,498,605 |
https://www.sarthaks.com/3859665/which-of-the-following-equations-depicts-verhulst-pearl-logistic-population-growth | Which of the following equations depicts Verhulst-Pearl logistic population growth? (1) \(\frac{dN}{dt}=rN(\frac{K-N}{N})\) (2) \(\frac{dN}{dt}=rN(\frac{K-N}{K})\) (3) \(\frac{dN}{dt}=rN(\frac{K}{K-N})\) (4) \(\frac{dN}{dt}=rN(\frac{K+N}{K})\) | The correct option is (2) \(\frac{dN}{dt} = rN (\frac{K-N}{K})\) Verhulst-Pearl logistic population growth is depicted by the equation \(\frac{dN}{dt} = rN (\frac{K-N}{K})\) Where • K = Carrying capacity • r = Intrinsic rate of natural increase • N = Population density at time ‘t’ | 1,780,498,605 |
https://www.sarthaks.com/3859652/match-list-i-with-list-ii-a-streptokinase-i-immunosuppressive-agent | Match List I with List II: List I (Bioactive molecules) List II (Importance) A. Streptokinase I. Immunosuppressive agent B. Statins II. Removal of clots from the blood vessels C. Lipases III. Blood cholesterol-lowering agent D. Cyclosporin A IV Detergent formulations Choose the correct answer from the options given bel... | The correct option is (3) A–II, B–III, C–IV, D–I (A) Streptokinase : Removal of clot (B) Statins : Blood cholesterol lowering agent (C) Lipases : Detergent formulation (D) Cyclosporine-A : Immuno suppressive agent | 1,780,498,605 |
https://www.sarthaks.com/3859614/flask-contains-argon-and-chlorine-in-the-ratio-of-1by-mass-the-temperature-of-the-mixture | A flask contains argon and chlorine in the ratio of 2 : 1 by mass. The temperature of the mixture is \(27^{\circ} \mathrm{C}\). The ratio of root mean square speed of the molecules of the two gases \(\left(\frac{\mathrm{v}_{\mathrm{ms}}^{\mathrm{Ar}}}{\mathrm{v}_{\mathrm{rms}}^{\mathrm{Cl}}}\right)\) is : (Atomic mass ... | Correct Option is: (3) \(\frac{\sqrt{7}}{2}\) As \(\mathrm{V}_{\mathrm{RMS}}=\sqrt{\frac{3 \mathrm{RT}}{\mathrm{Mw}}}\) Given temperature → constant Then \(\mathrm{V}_{\mathrm{RMS}} \propto \frac{1}{\sqrt{\mathrm{Mw}}}\) \(\Rightarrow \frac{\mathrm{V}_{\mathrm{RMS}}^{\mathrm{Ar}}}{\mathrm{V}_{\mathrm{RMs}}^{\mathrm{Cl}... | 1,780,498,605 |
https://www.sarthaks.com/3859578/which-the-following-statements-are-correct-inside-the-conductor-electrostatic-field-zero | Which of the following statements are correct? A. Inside the conductor, the electrostatic field is zero. B. Electric field at the surface of a charged conductor does not depend on its surface charge density. C. The interior of a charged conductor can have no excess charge in the static situation. D. At the surface of a... | Correct Option is: (1) A, C and D only A. Electrostatic field is zero inside a conductor. B. Electric field at the surface of a charged conductor = \(\frac {\sigma}{\epsilon_0} \hat{n}\), depends on surface charge density (\(\sigma\)). C. The interior of a charged conductor cannot have any excess charge in the static s... | 1,780,498,605 |
https://www.sarthaks.com/3859573/which-the-following-are-mentioned-your-notes-potential-hazards-concerns-nanotechnology | Which of the following are mentioned in your notes as potential hazards or concerns of nanotechnology? (1) Nanoparticles can enter the body through skin easily. (2) Nanoparticles may cause health risks due to chemical reactivity. (3) Nanoparticles always have higher melting points than bulk materials. A. (1) and (2) on... | The correct option is A. (1) and (2) only. (1) True – Nanoparticles are extremely small and can enter the body through skin, lungs, or ingestion, which raises safety concerns. (2) True – Due to their high surface area and reactivity, nanoparticles may pose health risks and toxicity issues. (3) False – Nanoparticles do ... | 1,780,498,605 |
https://www.sarthaks.com/3859661/match-list-i-with-list-ii-a-cortisol-stimulates-the-formation-of-alveoli-in-mammary-glands | Match List I with List II: List-I List-II a. Cortisol I. Stimulates the formation of alveoli in mammary glands b. Aldosterone II. Produces anti-inflammatory reactions c. Cholecystokinin III. Stimulates reabsorption of \(Na^{+}\) and water from renal tubule d. Progesterone IV Stimulates secretion of pancreatic enzymes a... | The correct option is (4) A-II, B-III, C-IV, D-I CCK acts on both pancreas and gall bladder and stimulates the secretion of pancreatic enzymes and bile juice, respectively. Progesterone also acts on the mammary glands and stimulates the formation of alveoli (sac-like structures which store milk) and milk secretion. Glu... | 1,780,498,605 |
https://www.sarthaks.com/3859641/match-list-with-list-respect-chronology-evolution-formsa-about-jawless-probably-evolved | Match List I with List II with respect to chronology of evolution of life forms List-I List-II A. About 65 mya (I) Jawless fish probably evolved B. About 500 mya (II) The dinosaurs suddenly disappeared from the earth C. About 350 mya (III) Seaweeds and few plants probably existed D. About 320 mya (IV) Invertebrates wer... | The correct option is (1) A(II), B(IV), C(I), D(III) About 65 mya – The dinosaurs suddenly disappeared from the earth. About 500 mya – Invertebrates were formed and became active. About 350 mya – Jawless fish probably evolved. About 320 mya – Seaweeds and few plants probably existed. | 1,780,498,605 |
https://www.sarthaks.com/3859605/box-mass-kept-the-floor-stationary-trolley-the-coefficient-static-friction-between-the-box | A box of mass 15 kg is kept on the floor of a stationary trolley. The coefficient of static friction between the box and the trolley is 0.12. Keeping the box in stationary state over the trolley, the maximum acceleration with which the trolley can be moved horizontally in \(\mathrm{m} \,\mathrm{s}^{-2}\) is : (\(\mathr... | Correct Option is: (2) 1.2 \( \mathrm{ma}_{\max }=\mathrm{F}_{\mathrm{lim}} \) \( \mathrm{ma}_{\max }=\mu, \mathrm{mg} \) \( \mathrm{a}_{\max }=\mu \mathrm{g}=1.2 \mathrm{~m} / \mathrm{s}^{2}\) | 1,780,498,605 |
https://www.sarthaks.com/3859599/for-a-travelling-harmonic-wave-y-x-t-2-0-cos-2-10-t-0-0080-x-0-35-where-x-and-y-are-in-cm | For a travelling harmonic wave \(y(x, t)=2.0 \cos 2 \pi(10 t-0.0080 x+0.35)\), where x and y are in cm and t in s. The phase difference between oscillatory motion of two points separated by a distance of 0.5 m is: (1) \(0.08\, \pi \,\mathrm{rad}\) (2) \(0.008\, \pi \,\mathrm{rad}\) (3) \(0.8\, \pi \,\mathrm{rad}\) (4) ... | Correct Option is: (3) \(0.8\, \pi \,\mathrm{rad}\) Given \(\mathrm{k}=2 \pi \times 0.008\, \mathrm{rad} / \mathrm{cm}\) \(\Delta \phi=\mathrm{k} \Delta \mathrm{x}\) \(=2 \pi \times 0.008 \times 50\quad[\Delta \mathrm{x}=50 \mathrm{~cm}]\) \(\Delta \phi=0.8 \,\pi \,\mathrm{rad}\) | 1,780,498,605 |
https://www.sarthaks.com/3859647/correct-statements-regarding-population-interactions-between-parasitism-commensalism | Choose the correct statements regarding population interactions between two species. A. In both parasitism and commensalism, only one species benefits and the other species is harmed. B. Both species benefit in mutualism. C. Both species benefit in commensalism. D. In parasitism, only one species benefits and the other... | The correct option is (2) B, D and E only In parasitism, one species is benefitted and the other is harmed. Whereas, in commensalism one species gets benefitted and the other remains unaffected. | 1,780,498,605 |
https://www.sarthaks.com/3859655/what-the-reason-behind-production-large-holes-swiss-cheese-the-production-large-amount-co2 | What is the reason behind production of large holes in ‘Swiss Cheese’? (1) The production of large amount of \(CO_2\) and \(H_2\) by Trichoderma polysporum (2) The production of large amount of \(CO_2\) by Clostridium butylicum (3) The production of large amount of \(CO_2\) and \(H_2\) by lactic acid bacteria called La... | The correct option is (4) The production of large amount of \(CO_2\) by Propionibacterium sharmanii Large holes in Swiss cheese are due to production of large amount of \(CO_2\) by a bacteria named Propionibacterium sharmanii. | 1,780,498,605 |
https://www.sarthaks.com/3859634/select-correct-statements-regarding-membrane-eukaryotic-membrane-approximately-protein | Select the correct statements regarding cell membrane in eukaryotic cell. A. Membrane of human RBCs has approximately 52% protein. B. Major phospholipids are arranged in a bilayer. C. Extensions of the plasma membrane into the cell form mesosomes. D. Tails towards the inner part of lipids are hydrophobic and thus prote... | The correct option is (4) A, B and D only In prokaryotes, extensions of plasma membrane into the cell form mesosomes. Eukaryotes lack such structure. Glycocalyx is present on the outer surface of the plasma membrane in prokaryotes. Eukaryotes do not have glycocalyx. Hence, only statement A, B and D are correct. | 1,780,498,605 |
https://www.sarthaks.com/3859643/count-persons-blood-sample-8000-eosinophils-lymphocytes-would-blood-sample-approximately | The WBC count of a person’s blood sample is 8000/cu mm. How many eosinophils and lymphocytes would be in the same blood sample approximately? (1) 300 – 500/cu mm and 500 – 700/cu mm respectively (2) 300 – 500/cu mm and 1200 – 1500/cu mm respectively (3) 100 – 120/cu mm and 160 – 200/cu mm respectively (4) 160 – 240/cu ... | The correct option is (4) 160 – 240/cu mm and 1600 – 2000/cu mm respectively. Eosinophils constitute 2-3% of total WBCs. Hence its value is approximately 2 to 3% of 8000/cu mm = 160 – 240/cu mm Lymphocytes constitute 20-25% of total WBCs. Hence its value is approximately 20 to 25% of 8000/cu mm = 1600 – 2000/cu mm | 1,780,498,605 |
https://www.sarthaks.com/3859590/cbse-class-10-admit-card-released-for-second-board-exam | CBSE Class 10 Admit Card 2026 Released for Second Board Exam The Central Board of Secondary Education has released the CBSE Class 10 Admit Card 2026 for the second board exam. Students appearing for the Phase 2 exams can now collect their hall tickets and check important exam details, including dates, centre, and guide... | CBSE Class 10th Phase-2 Admit Card 2026 The Central Board of Secondary Education (CBSE) has officially released the Class 10 Admit Card 2026 for the second board exam. Students who are going to appear in the Phase 2 exams can now collect their hall tickets from their respective schools. The admit card is a mandatory do... | 1,780,498,605 |
https://www.sarthaks.com/3859644/what-probability-having-children-blood-group-where-mother-father-heterozygous-blood-group | What is the probability of having children with ‘O’ blood group, where both mother and father are heterozygous for ‘A’ and ‘B’ blood group, respectively? (1) 50% (2) 75% (3) 0% (4) 25% | The correct option is (4) 25% | 1,780,498,605 |
https://www.sarthaks.com/3859639/select-the-set-fishes-which-belong-the-class-osteichthyes-saw-fish-fighting-fish-and-fish | Select the set of fishes which belong to the class Osteichthyes: (1) Saw fish, Fighting fish and Dog fish (2) Devil fish, Cuttlefish and Hagfish (3) Flying fish, Angel fish and Fighting fish (4) Starfish, Hagfish and Cuttlefish | The correct option is (3) Flying fish, Angel fish and Fighting fish Exocoetus (Flying fish),Betta (Fighting fish), Pterophyllum (Angel fish) belong to class Osteichthyes. Scoliodon (Dog fish), Pristis (Saw fish) belong to class Chondrichthyes. Myxine (Hagfish) belongs to class Cyclostomata. Sepia (Cuttlefish),Octopus (... | 1,780,498,605 |
https://www.sarthaks.com/3859666/the-toxin-proteins-isolated-from-bacillus-thuringiensis-coded-which-the-following-genes | The toxin proteins isolated from Bacillus thuringiensis, coded by which of the following genes would control cotton bollworms and corn borer, respectively? (1) cryIAc and cryIAb (2) cryIIAb and cryIAc (3) cryIAc and cryIIIAb (4) cryIAc and cryIIAb | The correct option is (1) cryIAc and cryIAb Protein encoded by genes cry IAc and cryII Ab control cotton bollworms that of cry IAb controls corn bores. | 1,780,498,605 |
https://www.sarthaks.com/3859650/for-metal-of-work-function-ev-which-of-the-following-wavelengths-incident-radiation-does | For a metal of work function 6.6 eV, which of the following wavelengths of incident radiation does not give rise to the photoelectric effect? (Take Planck's constant as \(6.6 \times 10^{-34} \mathrm{~J} \mathrm{~s}\)) (1) 200 nm (2) 100 nm (3) 50 nm (4) 150 nm | Correct Option is: (1) 200 nm \(\phi = 6.6 \ eV\) \(\frac{hc}{\lambda} = 6.6 \ eV\) \(\lambda _0 = \frac{12400}{6.6}\) \(\lambda _0 = 1878.7\ \mathring{A}\) \( = 187.87\ nm\) For photo electric effect \(\lambda \le \lambda _0\) \(\therefore\) The wavelength of radiation does not give rise to photoelectric effect is 200... | 1,780,498,605 |
https://www.sarthaks.com/3859619/human-protein-named-antitrypsin-obtained-from-transgenic-animals-used-treatment | The human protein named α-1-antitrypsin, obtained from transgenic animals, is used for the treatment of ______. (1) Alzheimer’s disease (2) Emphysema (3) Cystic fibrosis (4) Rheumatoid arthritis | The correct option is (2) Emphysema The human protein named α-1-antitrypsin, obtained from transgenic animals, is used for the treatment of emphysema. Transgenic models exist for the study of other diseases, such as Alzheimer’s disease, rheumatoid arthritis and cystic fibrosis. | 1,780,498,605 |
https://www.sarthaks.com/3859637/the-current-i-in-the-circuit-shown-below-is-all-diodes-are-ideal-and-identical | The current I in the circuit shown below is : (All diodes are ideal and identical) (1) \(\frac{1}{3} \mathrm{~A}\) (2) \(\frac{15}{2} \mathrm{~A}\) (3) \(\frac{5}{3} \mathrm{~A}\) (4) \(\frac{5}{9} \mathrm{~A}\) | Correct Option is: (2) \(\frac{15}{2} \mathrm{~A}\) Here \(\mathrm{D}_{1}\) and \(\mathrm{D}_{3}\) are F.B and \(\mathrm{D}_{2}\) and \(\mathrm{D}_{4}\) are R.B. then equivalent circuit \(\mathrm{R}_{\text {eq }}=\frac{4 \times 2}{4+2}=\frac{4}{3} \Omega\) \(\mathrm{I}=\frac{\mathrm{V}}{\mathrm{R}_{\text {eq }}}=\frac{... | 1,780,498,605 |
https://www.sarthaks.com/3859642/in-which-animal-do-haploid-cells-divide-mitotically-to-produce-gametes-1-male-frogs | In which animal do haploid cells divide mitotically to produce gametes? (1) Male frogs (2) Male honeybees (3) Male grasshoppers (4) Male earthworms | The correct option is (2) Male honeybees The male honeybee is haploid and females are diploid. The gamete formation in female honeybee is by meiosis, whereas male honeybee form gametes by mitosis. Thus haploid cell undergoes mitosis in male honeybees. | 1,780,498,605 |
https://www.sarthaks.com/3859658/the-speed-light-vacuum-taken-unity-light-takes-min-reach-the-earth-from-the-distance-between | The speed of light in vacuum is taken as unity. If light takes 6 min 40 s to reach the Earth from the Sun, the distance between the Sun and the Earth in new unit is : (1) \(3 \times 10^{8}\) (2) 500 (3) \(3 \times 10^{10}\) (4) 400 | Correct Option is: (4) 400 Time, t = 6 min 40 s = 360 + 40 = 400 s Distance in new system d = vt = 1 x 400 = 400 | 1,780,498,605 |
https://www.sarthaks.com/3859636/match-list-i-with-list-ii-related-to-embryonic-development-at-various-months-of-pregnancy | Match List I with List II related to embryonic development at various months of pregnancy: List-I List-II A. The foetus movement starts and hair appears on the head (I) 24 weeks of pregnancy B. The foetus develops limbs and digits (II) 20 weeks of pregnancy C. The foetus develops external genital organs (III) 8 weeks o... | The correct option is (3) A-II, B-III, C-IV, D-I In human beings, after one month of pregnancy, the embryo’s heart is formed. The first sign of growing foetus may be noticed by listening to the heart sound carefully through the stethoscope. By the end of the second month of pregnancy, the foetus develops limbs and digi... | 1,780,498,605 |
https://www.sarthaks.com/3859664/rectangular-wire-loop-of-sides-and-with-small-cut-moving-out-region-uniform-magnetic-field | A rectangular wire loop of sides 8 cm and 3 cm with a small cut, is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the plane of the loop. The emf developed across the cut, if the velocity of the loop is \(2 \mathrm{~cm} \mathrm{~s}^{-1}\), in a direction normal to the shorter sid... | Correct Option is: (1) \(1.8 \times 10^{-4}\) volt \(e=\ell \mathrm{BV}\) \(=3 \times 10^{-2} \times 0.3 \times 2 \times 10^{-2}\) \(=1.8 \times 10^{-4}\) volt | 1,780,498,605 |
https://www.sarthaks.com/3859612/in-the-circuit-shown-below-the-voltage-appearing-across-the-diode-d-will-be-of-the-form | In the circuit shown below, the voltage appearing across the diode D will be of the form : (1) (2) (3) (4) | Correct Option is: (4) Voltage drop will be across the diode, when it will be in reverse bias 1 In positive half cycle it will be in reverse biased | 1,780,498,605 |
https://www.sarthaks.com/3859618/which-following-statements-correct-reference-human-endoskeleton-human-skull-monocondylic | Which of the following statements are correct with reference to human endoskeleton? A. Human skull is monocondylic. B. The joint between any two adjoining vertebrae is a cartilaginous joint. C. In human beings, the number of cervical vertebrae is seven. D. All ribs except the last 2 pairs are bicephalic. E. The occipit... | The correct option is (1) B, C and E only Human skull have two occipital condyles (dicondylic skull).The joint between the adjacent vertebrae in the vertebral column is cartilaginous joint. The number of cervical vertebrae are seven in almost all mammals including human beings. Each rib is a thin flat bone connected do... | 1,780,498,605 |
https://www.sarthaks.com/3859583/concave-lens-light-emanating-from-object-parallel-principal-axis-lens-after-refraction | In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens, after refraction : (1) passes through the second principal focus. (2) appears to diverge from the first principal focus. (3) passes through 2F , which is the radius of curvature of the lens. (4) emerges parallel to t... | Correct Option is: (2) appears to diverge from the first principal focus. \(F_2\) is the second principal focus ⇒ It is the virtual image position for object at infinity. \(F_1\) is the first principal focus ⇒ It is the virtual object position for which image is formed at infinity. The best appropriate answer is option... | 1,780,498,605 |
https://www.sarthaks.com/3859629/match-list-i-and-list-ii-a-progestasert-i-barrier-made-of-rubber-used-by-females | Match List I and List II List-I List-II A. Progestasert (I) Barrier made of rubber used by females B. Multiload 375 (II) Oral contraceptive C. Diaphragm (III) Hormone releasing IUD D. Saheli (IV) Copper releasing IUD Choose the correct answer from the options given below: (1) A(IV), B(II), C(I), D(III) (2) A(III), B(IV... | The correct option is (3) A(III), B(IV), C(I), D(II) Progestasert – Hormone releasing IUD Multiload 375 – Copper releasing IUD Diaphragm – Barrier made of rubber used by females Saheli – Oral contraceptive | 1,780,498,605 |
https://www.sarthaks.com/3859646/arrange-the-following-events-occuring-in-renin-angiotensin-mechanism-the-correct-order | Arrange the following events occuring in Renin-Angiotensin mechanism in the correct order: A. Increase in blood pressure and Glomerular filtration rate. B. Reabsorption of Na+ and water from distal parts of tubule due to Aldosterone. C. Fall in Glomerular filtration rate. D. Vasoconstriction by Angiotensin II and relea... | The correct option is (1) C, E, D, B, A The JGA plays a complex regulatory role A fall in glomerular blood flow/GFR can activate the JG cells to release renin which converts angiotensinogen in blood to angiotensin I and further to angiotensin II Angiotensin II, being a powerful vasoconstrictor, increases the glomerular... | 1,780,498,605 |
https://www.sarthaks.com/3859635/choose-correct-statements-regarding-organelles-inclusions-endomembrane-includes-complex | Choose the correct statements regarding cell organelles and their inclusions. A. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria. B. Rough endoplasmic reticulum bears ribosomes on its surface. C. Both mitochondria and plastids have circular DNA. D. A network of microtubules, micro... | The correct option is (4) B, C and D only The endomembrane system does not include mitochondria. Mitochondria is a double membrane bound cell organelle. | 1,780,498,605 |
https://www.sarthaks.com/3859628/the-magnitude-and-direction-of-the-acceleration-produced-in-body-of-mass-when-two-mutually | The magnitude and direction of the acceleration produced in a body of mass 5 kg when two mutually perpendicular forces 8 N and 6 N act on it, are respectively: (1) \(2 \mathrm{~ms}^{-2} ; \tan ^{-1} ( 3 / 4\) with 8 N force) (2) \(2 \mathrm{~ms}^{-2} ; \tan ^{-1} ( 4 / 3\) with 8 N force) (3) \(2 \mathrm{~ms}^{-2} ; \t... | Correct Option is: (1) \(2 \mathrm{~ms}^{-2} ; \tan ^{-1} ( 3 / 4\) with 8 N force) \(F_{\text {Res }}=\sqrt{6^{2}+8^{2}}\) \(F_{\text {Res }}=10 \mathrm{~N}\) \(\mathrm{a}=\frac{\mathrm{F}_{\text {Res }}}{\mathrm{m}}=\frac{10}{5}=2 \mathrm{~m} / \mathrm{s}^{2}\) \(\tan \theta=\frac{6}{8}=\frac{3}{4}\) \(\mathrm{a}=2 \... | 1,780,498,605 |
https://www.sarthaks.com/3859576/make-a-fixture-of-4-teams-by-tabular-method | Make a fixture of 4 teams by tabular method. | 4-team league fixture using the tabular (round-robin) method. Teams Team A Team B Team C Team D Rounds Table Round Match 1 Match 2 1 A vs B C vs D 2 A vs C B vs D 3 A vs D B vs C Explanation (Tabular Method) Total teams = 4 Matches = n(n−1)/2 = 4×3/2 = 6 matches Rounds = n−1 = 3 rounds Each team plays once per round Al... | 1,780,498,605 |
https://www.sarthaks.com/3859623/jee-main-paper-2-result-out | JEE Main 2026 Paper 2 Result Out The JEE Main 2026 Session 2 Paper 2 result has been released in online mode by the National Testing Agency (NTA). Candidates can now download their scorecard and check important details like percentile, subject-wise marks, and All India Rank. | JEE Main 2026 Session 2 Paper 2 Result Declared: Direct Link Here The JEE Main 2026 Session 2 Paper 2 result has been officially declared by the National Testing Agency (NTA). Candidates who appeared for the B.Arch (Paper 2A) and B.Planning (Paper 2B) exams can now check their scorecards online through the official web... | 1,780,498,605 |
https://www.sarthaks.com/3859585/an-unknown-nucleus-has-a-nuclear-density-of-2-29-x-10-17-kg-m-3-and-mass-of | An unknown nucleus has a nuclear density of \(2.29 \times 10^{17} \mathrm{~kg} / \mathrm{m}^{3}\) and mass of \(19.926 \times 10^{-27} \mathrm{~kg}\). Its mass number A is approximately : (Take \(\mathrm{R}_{0}=1.2 \times 10^{-15} \mathrm{~m}, 4 \pi=12.56\)) (1) 16 (2) 20 (3) 12 (4) 19 | Correct Option is: (3) 12 Mass = Volume x Density \(\mathrm{M} =\left(\frac{4}{3} \pi \mathrm{R}^{3}\right) \rho\) \(\quad\left[\because \mathrm{R}=\mathrm{R}_{0} \mathrm{~A}^{1 / 3}\right] \) \(\mathrm{M} =\left(\frac{4}{3} \pi \mathrm{R}_{0}^{3} \mathrm{~A}\right)\rho \) \(\Rightarrow \mathrm{A} =\frac{3 \mathrm{M}}{... | 1,780,498,605 |
https://www.sarthaks.com/3859622/incorrect-statement-reference-grouping-erythroblastosis-foetalis-condition-observed | Select the incorrect statement with reference to Rh grouping. A. Erythroblastosis foetalis is a condition observed having foetus with \(Rh^{-ve}\) blood and mother with \(Rh^{+ve}\) blood. B. Rh antigen is observed on RBCs in the majority of human beings. C. Before blood transfusion, Rh group should also be matched. D.... | The correct option is (3) A and E only (A) Erythroblastosis foetalis is special case of Rh incompatibility (mismatching) has been observed between the \(Rh^{-ve}\) blood of a pregnant mother with \(Rh^{+ve}\) blood of the foetus. (E) Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mo... | 1,780,498,605 |
https://www.sarthaks.com/3859621/electromagneticwave-production-microwave-electrons-atomsemit-whenthey-ahigher | Match List I with List II : List I (Electromagnetic wave) List II (Production) A. Microwave I. Electrons in atoms emit light when they move from a higher energy level to a lower energy level. B. Visible light II. Radioactive decay of nucleus C. Gamma rays III. Vibration of atoms and molecules D. Infra-red rays IV. Klys... | Correct Option is: (4) A-IV, B-I, C-II, D-III List I (Electromagnetic wave) List II (Production) A. Microwave IV. Klystron valve or magnetron valve B. Visible light I. Electrons in atoms emit light when they move from a higher energy level to a lower energy level. C. Gamma rays II. Radioactive decay of nucleus D. Infra... | 1,780,498,605 |
https://www.sarthaks.com/3859662/arrange-the-following-cell-layers-structures-around-female-gamete-from-outer-inner-side | Arrange the following cell layers/structures around the female gamete, from outer to inner side : A. Zona pellucida B. Perivitelline space C. Corona radiata D. Plasma membrane of ovum Choose the correct answer from the options given below : (1) C, A, D, B (2) C, A, B, D (3) D, B, A, C (4) A, C, B, D | The correct option is (2) C, A, B, D The cell layer/structure around the female gamete from outer to inner side is : Corona radiata → zona pellucida → perivitelline space → plasma membrane of ovum. So the correct answer is C, A, B, D. | 1,780,498,605 |
https://www.sarthaks.com/3859651/following-stages-cycle-plasmodium-arrange-stages-proper-parasites-reproduce-asexually | The following are the stages of life cycle of Plasmodium. Arrange the stages in the proper order. A. The parasites reproduce asexually in RBCs, bursting the cells. B. The parasites reproduce asexually in liver cells, bursting the cells and releasing into blood. C. Gametocytes develop in RBCs. D. Sporozoites reach the l... | The correct option is (1) E, D, B, A, C Plasmodium enters the human body as sporozoites through the bite of an infected female Anopheles mosquito. The parasites initially multiply asexually within the liver cells and then attack the RBCs resulting in their rupture. • Sexual stages (gametocytes) develop in red blood cel... | 1,780,498,605 |
https://www.sarthaks.com/3859659/bpsc-72nd-recruitment-notification-released | BPSC 72nd Recruitment Notification 2026 Released The BPSC 72nd Recruitment 2026 notification has been officially released, offering 1230 Government Jobs in Bihar. Candidates preparing for state-level competitive exams can now check important dates, eligibility criteria, and the online application process. | BPSC 72nd Recruitment 2026: Apply Online for 1230 Posts The BPSC 72nd Recruitment 2026 has officially been announced by the Bihar Public Service Commission (BPSC), bringing a great opportunity for candidates preparing for government jobs in Bihar. This recruitment drive offers 1230 vacancies across various administrati... | 1,780,498,605 |
https://www.sarthaks.com/3859607/cuet-ug-admit-card-released | CUET UG 2026 Admit Card Released The CUET UG 2026 admit card has been officially released by NTA on its website. Candidates appearing for the exam can now download their hall tickets online using their application number and date of birth. Make sure to check all details carefully and keep a printed copy ready for the e... | CUET UG 2026 Admit Card Out: Direct Download Link Here The National Testing Agency (NTA) has officially released the CUET UG 2026 Admit Card for candidates appearing in the Common University Entrance Test (Undergraduate). Students who have registered for the exam can now download their hall tickets from the official we... | 1,780,498,605 |
https://www.sarthaks.com/3859649/spermatogonia-undergo-series-divisions-statements-produce-sperms-select-correct-following | Spermatogonia undergo a series of cell divisions statements to produce sperms. Select the correct from the following : A. Spermatogonia always undergo meiotic cell division. B. Primary spermatocytes divide mitotically to produce secondary spermatocytes. C. Secondary spermatocytes, through their second meiotic division,... | The correct option is (1) C and E only (A) Incorrect : Spermatogonia undergo mitotic differentiation. (B) Incorrect : Primary spermatocytes undergo 1st meiotic division to form secondary spermatocytes. (C) Correct : Secondary spermatocytes undergo 2nd meiotic division to form the haploid spermatids. (D) Incorrect : Spe... | 1,780,498,605 |
https://www.sarthaks.com/3859627/match-list-with-list-ii-related-to-muscular-skeletal-system-tetany-inflammation-of-joints | Match List I with List II related to muscular/skeletal system: List I List II A. Tetany (I) Inflammation of joints B. Arthritis (II) Autoimmune disorder affecting neuromuscular junction C. Myasthenia gravis (III) Wild contraction in muscle due to low \(Ca^{++}\) in body fluid D. Muscular dystrophy (IV) Progressive dege... | The correct option is (2) A-III, B-I, C-II, D-IV Myasthenia gravis: Auto immune disorder affecting neuromuscular junction. Muscular dystrophy: Progressive degeneration of skeletal muscle. Arthritis: Inflammation of joints. Tetany: Rapid spasms (wild contractions) in muscle due to low \(Ca^{++}\) in body fluid. | 1,780,498,605 |
https://www.sarthaks.com/3859625/match-list-i-with-list-ii-a-nicotine-i-causes-sense-of-euphoria-and-increased-energy | Match List I with List II: List I (Drug) List II (Effect) A. Nicotine I. Causes sense of euphoria and increased energy B. Morphine II. Stimulates adrenal gland to release catecholamines into blood circulation C. Heroin III. Effective sedative and painkiller D. Cocaine IV A depressant; slows down body function Choose th... | The correct option is (1) A–II, B–III, C–IV, D–I Nicotine is present in tobacco and it activates adrenal medulla to release catecholamines into blood circulation, so (A) → II Morphine acts as an effective sedative and painkiller. It is an opioid, so (B) → III Heroin acts as a depressant and slows down body function, so... | 1,780,498,605 |
https://www.sarthaks.com/3859668/the-juxta-glomerular-apparatus-special-sensitive-region-formed-cellular-modifications | The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in _______ related to the same nephron. (1) Proximal convoluted tubule and afferent renal arteriole (2) Distal convoluted tubule and efferent renal arteriole (3) Proximal convoluted tubule and efferent renal arteriole (4... | The correct option is (4) Distal convoluted tubule and afferent renal arteriole JGA is a special sensitive region formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact. | 1,780,498,607 |
https://www.sarthaks.com/3859819/if-left-begin-matrix-1a-00-end-matrix-right-and-left-begin-matrix-1b-00-end-matrix-right | If \(A=\left(\begin{matrix}1&a\\0&0\end{matrix}\right)\) and \(B=\left(\begin{matrix}1&b\\0&0\end{matrix}\right)\) where \(a\) and \(b\) are two constants, then \(A^mB^n=\) A) \(A\) B) \(B\) C) \(A+B\) D) \(A-B\) | Correct option: B) B \(A = \begin{pmatrix}1 & a \\ 0 & 0\end{pmatrix},\) \(B = \begin{pmatrix}1 & b \\ 0 & 0\end{pmatrix}\) Both matrices satisfy: \(A^2 = A \Rightarrow A^m = A,\quad B^2 = B \Rightarrow B^n = B\) So: \(A^m B^n = AB\) Compute (AB) \(AB=\begin{pmatrix}1 & a \\ 0 & 0\end{pmatrix} \begin{pmatrix}1 & b \\ 0... | 1,780,498,627 |
https://www.sarthaks.com/3859736/in-the-bohr-model-of-the-hydrogen-atom-the-energy-of-electron-the-energy-level-given-en-over | In the Bohr model of the hydrogen atom, the energy of an electron in the nn-th energy level is given by \(E_n={-13.6\over n^2}eV\). When an electron makes a transition from a higher energy level to a lower energy level, a photon is emitted. Consider all possible emission transitions from the \((n+1)\)-th energy level d... | For an electron initially in the \((n+1)^{\text{th}}\) energy level, the number of possible spectral lines emitted equals the number of possible transitions between energy levels. The total number of distinct transitions from (m) levels is: \(N=\frac{m(m-1)}{2}\) Here, m = n + 1 So, \(N=\frac{(n+1)n}{2}\) Also, \(1+2+3... | 1,780,498,627 |
https://www.sarthaks.com/3859669/match-list-i-with-list-ii-a-molluscs-i-pulmonary-respiration-only | Match List I with List II: List I List II A. Molluscs I. Pulmonary respiration only B. Reptiles II. Branchial respiration C. Adult amphibians III. Cellular respiration D. Amoeba IV Pulmonary and cutaneous respiration Choose the correct answer from the options given below: (1) A–III, B–II, C–I, D–IV (2) A–I, B–II, C–IV,... | The correct option is (4) A–II, B–I, C–IV, D–III (A) Molluscs → (II) Perform branchial respiration by using feather-like gills (B) Reptiles → (I) Perform pulmonary respiration only via lungs (C) Adult amphibians → (IV) Perform pulmonary and cutaneous respiration via lungs and moist skin, respectively (D) Amoeba → (III)... | 1,780,498,627 |
https://www.sarthaks.com/3859797/want-some-extra-questions-having-chances-to-come-in-2nd-board-exam | Please ! give me all types of question and answers of chemistry which can come in my 2nd boards exams a huge request due to less time. | CBSE Class 10 Chemistry Most Important Questions MCQs Questions Q1. Which of the following is a displacement reaction? A) \(CaO + H_2O \rightarrow Ca(OH)_2\) B) \(Zn + CuSO_4 \rightarrow ZnSO_4 + Cu\) C) \(CaCO_3 \rightarrow CaO + CO_2\) D) \(HCl + NaOH \rightarrow NaCl + H_2O\) Answer: B) \(Zn + CuSO_4 \rightarrow ZnS... | 1,780,498,627 |
https://www.sarthaks.com/3859857/swayam-january-registration-deadline-extended | SWAYAM January 2026 Registration Deadline Extended The National Testing Agency (NTA) has extended the SWAYAM January 2026 exam registration deadline till May 13, 2026. Candidates interested in online certification courses can now complete their application process through the official portal. Check updated dates, fees,... | SWAYAM Registration 2026 Deadline Extended for January Session, Apply Till May 13 The National Testing Agency (NTA) has announced that the SWAYAM January Registration 2026 Deadline Extended for the January semester examination. Candidates who have not yet applied can now complete their registration process online till ... | 1,780,498,627 |
https://www.sarthaks.com/3859829/nios-class-12th-result | NIOS Class 12th Result 2026 To Be Announced Soon The National Institute of Open Schooling (NIOS) is expected to announce the NIOS Class 12th Result 2026 soon. Students who appeared for the NIOS Senior Secondary Class 12 examinations will be able to access their results online by entering their enrollment number on the ... | NIOS 12th Result 2026: Check Your Result Soon The National Institute of Open Schooling (NIOS) is expected to announce the NIOS 12th Result 2026 soon on its official website. Students who appeared for the Senior Secondary examinations conducted from April 10, 2026, to May 6, 2026, will be able to check their results onl... | 1,780,498,627 |
https://www.sarthaks.com/3859759/tripura-board-class-12th-result | Tripura Board Class 12th Result 2026 Announced The Tripura Board Class 12th Result 2026 has been announced by the Tripura Board of Secondary Education. Students who appeared for the TBSE Higher Secondary examinations can now check their results online through the official website using their roll number. | TBSE Class 12 Result 2026: Check Your Result Here The Tripura Board Class 12th Result 2026 has been released by the Tripura Board of Secondary Education. Students who appeared for the TBSE Class 12 board examinations conducted from February 25 to March 30, 2026, can now check their results online through the official w... | 1,780,498,627 |
https://www.sarthaks.com/3859826/nios-class-10th-result | NIOS Class 10th Result 2026 To Be Announced Soon The National Institute of Open Schooling (NIOS) is expected to release the NIOS Class 10th Result 2026 soon. Students who appeared for the NIOS Secondary Class 10 examinations will be able to check their results online using their enrollment number through the official w... | NIOS 10th Result 2026: Check Your Result Soon The National Institute of Open Schooling (NIOS) is expected to release the NIOS 10th Result 2026 soon on its official website. Students who appeared for the Secondary examinations conducted from April 10, 2026, to May 6, 2026, will be able to check their results online usin... | 1,780,498,627 |
https://www.sarthaks.com/3859743/csir-ugc-net-december-certificate-released | CSIR UGC NET December 2025 Certificate Released The National Testing Agency has released the CSIR UGC NET December 2025 e-Certificate on the official website. Candidates who qualified for JRF, Assistant Professor, or PhD eligibility can now download their certificates online using their login credentials. | CSIR UGC NET December 2025 Certificate Released: Direct Download Link Here The National Testing Agency (NTA) has officially released the CSIR UGC NET December 2025 e-Certificate online. Candidates who qualified in the Joint CSIR-UGC NET December 2025 examination can now download their certificates from the official web... | 1,780,498,627 |
https://www.sarthaks.com/3859850/jipmat-registration-deadlineextended | JIPMAT 2026 Registration Deadline Extended The National Testing Agency (NTA) has extended the JIPMAT 2026 registration deadline for students seeking admission to the Integrated Programme in Management (IPM) at IIM Jammu and IIM Bodh Gaya. Candidates can now apply online before the revised last date through the official... | NTA Extends JIPMAT 2026 Registration Deadline: Check New Last Date Here The National Testing Agency (NTA) has officially extended the registration deadline for the Joint Integrated Programme in Management Admission Test (JIPMAT) 2026. Students who have not yet completed their application process now have extra time to ... | 1,780,498,627 |
https://www.sarthaks.com/3859733/a-city-introduces-a-flat-fare-of-5-for-any-metro-journey-regardless-of-distance | A city introduces a flat fare of $5 for any metro journey, regardless of distance. Which of the following is most likely to be a negative consequence of this policy? A. Long-distance commuters will save money. B. Short-distance passengers may switch to walking or cycling. C. The metro system may become overcrowded on l... | The correct option is C. The metro system may become overcrowded on long-distance routes. A flat fare means everyone pays the same amount regardless of distance. Long-distance travelers benefit because they pay less per kilometer. Short-distance travelers may feel the fare is too expensive for a short ride. As a result... | 1,780,498,627 |
https://www.sarthaks.com/3859843/in-abc-ab-bc-13-and-ca-15-let-the-orthocentre-incentre-and-circumcentre-abc-respectively | In \(\triangle ABC\), \(AB=8\), \(BC=13\) and \(CA=15\). Let \(H\), \(I\), \(O\) be the orthocentre, incentre and circumcentre of \(\triangle ABC\) respectively. Find \(\sin\angle HIO\). | 1,780,498,627 | |
https://www.sarthaks.com/3859679/evolution-human-appears-parallel-the-progressive-development-brain-and-language-skills | Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is: (1) Ramapithecus → Homo habilis → Homo erectus → Neanderthal → Homo sapiens (2) Homo habilis → Homo erectus → Ramapithecus → Neanderthal →... | Correct option: (1) Ramapithecus → Homo habilis → Homo erectus → Neanderthal → Homo sapiens Evolution of human appears parallel to the progressive development of brain and language skills. The correct chronological order in which human evolution took place is : Ramapithecus → Australopithecines → Homo habilis → Homo er... | 1,780,498,627 |
https://www.sarthaks.com/3859682/match-list-i-with-list-ii-a-erv-expiratory-reserve-volume-i-2500-3000-ml | Match List-I with List-II List-I (Respiratory Volume) List-II (Capacity in mL) A. ERV (Expiratory Reserve Volume) I. 2500 – 3000 mL B. RV (Residual Volume) II. 500 mL C. IRV (Inspiratory Reserve Volume) III. 1000 – 1100 mL D. TV (Tidal Volume) IV. 1100 – 1200 mL Choose the correct answer from the options given below : ... | Correct Option: (2) A-III, B-IV, C-I, D-II ERV (Expiratory Reserve Volume) – 1000 – 1100 mL RV (Residual Volume) – 1100–1200 mL IRV (Inspiratory Reserve Volume) – 2500–3000 mL TV (Tidal Volume) – 500 mL | 1,780,498,627 |
https://www.sarthaks.com/3859735/ina-sushiro-restaurant-sushi-plates-constant-linear-velocity-along-straight-conveyor | In a Sushiro restaurant, sushi plates move at a constant linear velocity of \(0.25ms^{-1}\)along a straight conveyor belt. A customer is seated such that the straight-line distance along the belt from the entry point of the visible conveyor section to the customer's position is \(2.25m\) (a) A red plate enters the visi... | Given: Speed of conveyor belt (and plate): \(v = 0.25\ \text{m s}^{-1}\) Distance from entry point to customer: \(d = 2.25\ \text{m}\) Mass of plate + sushi: \(m = 280\ \text{g} = 0.280\ \text{kg}\) Stopping time: \(\Delta t = 0.35\ \text{s}\) (a) Time to reach the customer and relative velocity Using \(t=\frac{d}{v}\)... | 1,780,498,627 |
https://www.sarthaks.com/3859678/ecological-pyramids-represent-relationship-between-organisms-different-generally-inverted | Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for: (1) Pyramid of biomass in grassland (2) Pyramid of biomass in sea (3) Pyramid of number in grassland (4) Pyramid of energy in pond ecosystem | Correct option: (2) Pyramid of biomass in sea The pyramid of biomass is sea is generally invertible because the biomass of fishes for exceeds that of phytoplankton. | 1,780,498,627 |
https://www.sarthaks.com/3859798/nchm-jee-2026-answer-key-out | NCHM JEE 2026 Answer Key Out The National Testing Agency (NTA) has released the NCHM JEE 2026 provisional answer key and response sheet on its official website. Candidates can now check their recorded answers, calculate their estimated scores, and raise objections online before the deadline. | NCHM JEE 2026 Answer Key and Response Sheet Released, Objection Window Open The National Testing Agency (NTA) has officially released the provisional answer key and response sheet for the NCHM JEE 2026 examination. Candidates who appeared for the National Council for Hotel Management Joint Entrance Examination can now ... | 1,780,498,627 |
https://www.sarthaks.com/3859703/in-the-first-excited-state-of-hydrogen-atom-the-energy-of-its-electron-is-3-4-ev | In the first excited state of hydrogen atom, the energy of its electron is -3.4 eV. The radial distance of the electron from the hydrogen nucleus in this case is approximately : (Take \(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}, e=1.6 \times 10^{-19} \mathrm{C}\) and \(\left.\frac{1}{4 \pi \varepsilon_{0}}=9 \times... | Correct Option is: (2) \(2.1 \times 10^{-10} \mathrm{~m}\) \(E=\frac{k q_{1} q_{2}}{2 r}\) \(3.4=\frac{9 \times 10^{9} \times\left(1.6 \times 10^{-19}\right)^{2}}{2 \times \mathrm{r}}\) \(\mathrm{r}=2.1 \times 10^{-10} \mathrm{~m}\) | 1,780,498,627 |
https://www.sarthaks.com/3859841/x-2-4x-69420 | \(4x-x^2+69420=\) A. \(-(x+2)^2+69416\) B. \(-(x-2)^2+69416\) C. \(-(x+2)^2+69424\) D. \(-(x-2)^2+69424\) | Correct option D) \((- (x - 2)^2 + 69424)\) We start with the expression: \(4x - x^2 + 69420\) Rearrange in standard form: \(-x^2 + 4x + 69420\) Factor out (-1) from the quadratic terms: \(-(x^2 - 4x) + 69420\) Now complete the square inside: \(x^2 - 4x = (x - 2)^2 - 4\) Substitute: \(-( (x - 2)^2 - 4 ) + 69420\) Now s... | 1,780,498,627 |
https://www.sarthaks.com/3859839/remove-the-bracketsand-write-the-expression-having-same-value | Remove the brackets and write the expression having the same value. (a) \( 14+(12+10) \) (b) \( 14-(12+10) \) (c) \( 14+(12-10) \) (d) \( 14-(12-10) \) (e) \( -14+(12-10) \) (f) \( 14-(-12-10) \) | We remove brackets using basic sign rules: (+(a+b) = a+b) (-(a+b) = -a - b) (+(a-b) = a-b) (-(a-b) = -a + b) (a) (14 + (12 + 10)) = 14 + 12 + 10 (b) (14 - (12 + 10)) = 14 - 12 - 10 (c) (14 + (12 - 10)) = 14 + 12 - 10 (d) (14 - (12 - 10)) = 14 - 12 + 10 (e) (-14 + (12 - 10)) = -14 + 12 - 10 (f) (14 - (-12 - 10)) Be care... | 1,780,498,627 |
https://www.sarthaks.com/3859671/sixth-mutant-codon-beta-globin-causing-polymerization-haemoglobin-change-shape | The sixth mutant codon of beta globin gene causing polymerization of Haemoglobin and change in RBC shape is ______. (1) CAG (2) GUG (3) AUG (4) GAG | The correct option is (2) GUG The substitution of amino acid in globin protein results due to single base substitution at 6th coden of the β-globin gene from GAG to GUG. | 1,780,498,627 |
https://www.sarthaks.com/3859763/rrb-ntpc-graduate-final-result-out | RRB NTPC Graduate Final Result 2026 Out The Railway Recruitment Board has officially announced the RRB NTPC Graduate Final Result 2026 for 8,113 posts. Candidates who appeared in the examination can now check the region-wise merit list PDF, selection status, and document verification details through the official RRB we... | RRB NTPC Graduate Final Result 2026 Released: Check Merit List PDF at Official Site The Railway Recruitment Board (RRB) has officially released the RRB NTPC Graduate Final Result 2026 on 7 May 2026. Candidates who appeared in the CBT-2 and CBAT exams can now check their final selection status through the region-wise me... | 1,780,498,627 |
https://www.sarthaks.com/3859840/in-triangle-abc-the-lengths-sides-and-are-420-and-69420-respectively-which-side-the-longest | In \(△ABC\), the lengths of sides \(AB\), \(BC\), and \(CA\) are \(69\), \(420\), and \(69420\) respectively. Which side is the longest? A. \(AB\) B. \(BC\) C. \(CA\) D. Triangle doesn't exist | For a triangle to exist, the sum of any two sides must be greater than the third side. Given: \(AB=69,\quad BC=420,\quad CA=69420\) Check: 69+420=489 But 489 < 69420 So the triangle inequality fails. Therefore, such a triangle cannot exist. \(\boxed{\text{D. Triangle doesn't exist}}\) | 1,780,498,627 |
https://www.sarthaks.com/3859701/a-ray-of-monochromatic-light-is-passing-through-an-equilateral-prism | A ray of monochromatic light is passing through an equilateral prism (ABC) as shown in the figure. The refracted ray (QR) is parallel to its base (BC) and the angle of incidence (i) is \(50^{\circ}\). Then the angle of deviation (\(\delta\)) is : (1) \(45^{\circ}\) (2) \(55^{\circ}\) (3) \(35^{\circ}\) (4) \(40^{\circ}... | Correct Option is: (4) \(40^{\circ}\) For an equilateral prism \(|\underline{A}=60\) since refracted ray is parallel to base so it is condition of minimum deviation. \(\mathrm{r}=\frac{\mathrm{A}}{2}=\frac{60}{2}=30^{\circ}\) and \(\mathrm{i}=e=50^{\circ}\) But \(\delta =\mathrm{i}+e-\mathrm{A}\) \(=50+50-60 \) \(=40^{... | 1,780,498,627 |
https://www.sarthaks.com/3859847/cuet-ug-exam-starts-today | CUET UG 2026 Exam Starts Today The NTA has officially started the CUET UG 2026 examination across India. Candidates appearing for the entrance test must follow important exam centre guidelines, dress code rules, reporting timings, and document requirements to avoid any last-minute issues on exam day. | NTA CUET UG 2026 Exam Begins Today: Important Exam Centre Instructions for Candidates The National Testing Agency (NTA) has officially started the Common University Entrance Test Undergraduate (CUET UG) 2026 from today. Lakhs of students across India are appearing for the entrance examination, which is conducted for ad... | 1,780,498,627 |
https://www.sarthaks.com/3859760/which-one-of-the-following-is-the-site-for-active-ribosomal-rna-synthesis | Which one of the following is the site for active ribosomal RNA synthesis? (1) Kinetochore (2) Centrosome (3) Chromatin (4) Nucleolus | Correct option is : (4) Nucleolus Nucleolus is the site for active ribosomal RNA synthesis. | 1,780,498,627 |
https://www.sarthaks.com/3859694/each-side-of-a-metallic-cube-of-mass-5-580-kg-is-measured-to-be-9-0-cm | Each side of a metallic cube of mass 5.580 kg is measured to be 9.0 cm. Keeping the significant figures in view, the density of the material of the cube can be best expressed as \(\mathrm{X} \times 10^{3} \mathrm{~kg} \mathrm{~m}^{-3}\), where the value of X is : (1) 7.654 (2) 7.7 (3) 7.65 (4) 7.6 | Correct Option is: (2) 7.7 \( \text {Density }=\frac{\text { Mass }}{\text { Volume }} \) \(=\frac{5.580 \mathrm{~kg}}{(9.0 \mathrm{~cm})^3} \) \( =\frac{5.580}{729} \times 10^6 \frac{\mathrm{~kg}}{\mathrm{~m}^3} \) \(=0.007654321 \times 10^6 \frac{\mathrm{~kg}}{\mathrm{~m}^3} \) \(=7.654 \times 10^3 \frac{\mathrm{~kg}... | 1,780,498,627 |
https://www.sarthaks.com/3859845/jee-advanced-admit-card-released | JEE Advanced Admit Card 2026 Released IIT Roorkee has released the JEE Advanced Admit Card 2026 on the official website jeeadv.ac.in. Candidates appearing for the IIT entrance exam can now download their hall ticket online using their registration details before the May 17, 2026 examination. | JEE Advanced Admit Card 2026 Out: Direct Link to Download Hall Ticket The Joint Entrance Examination Advanced (JEE Advanced) 2026 admit card has officially been released by IIT Roorkee on the official website. Candidates who successfully registered for the examination can now download their hall tickets online from Off... | 1,780,498,627 |
https://www.sarthaks.com/3859693/tamil-nadu-board-class-10th-result | Tamil Nadu Board Class 10th Result 2026 Announced The Tamil Nadu Directorate of Government Examinations has announced the Tamil Nadu Board Class 10th Result 2026. Students who appeared for the SSLC board examination can now check their results online through the official website using their registration number and date... | TN SSLC Result 2026: Check Your Result Here TN SSLC Result 2026 has been released by the Tamil Nadu Directorate of Government Examinations. Students who appeared for the Class 10 board examination can now check their results online through the official website using their registration number and date of birth. Class 11... | 1,780,498,627 |
https://www.sarthaks.com/3859815/sikkim-board-class-12th-result | Sikkim Board Class 12th Result 2026 To Be Announced Soon The Sikkim Board of Secondary Education (SBSE) is expected to announce the Sikkim Board Class 12th Result 2026 soon. Students who appeared for the SBSE Class 12 examinations will be able to check their results online using their roll number through the official w... | Sikkim Board 12th Result 2026: Check Your Result Soon The Sikkim Board Class 12 Result 2026 is expected to be announced soon by the Sikkim Board of Secondary Education (SBSE). Students who appeared for the Class 12 board examinations conducted from March 7 to March 28, 2026, are eagerly waiting for their results. Once ... | 1,780,498,627 |
https://www.sarthaks.com/3859751/delhi-stenographer-final-result-out | Delhi Stenographer 2026 Final Result Out The Delhi Development Authority (DDA) has released the Delhi Stenographer Final Result 2026 on its official website. Candidates who appeared in the CBT and Skill Test can now download the merit list PDF and check their selection status online. | DDA Stenographer Final Result 2026 Released Check Merit List PDF Here The Delhi Development Authority (DDA) has officially released the DDA Stenographer Final Result 2026 on its official website. Candidates who appeared for the Computer Based Test (CBT) and Skill Test can now check their final selection status online t... | 1,780,498,627 |
https://www.sarthaks.com/3859820/viteee-result-2026-released | VITEEE Result 2026 Released at vit.ac.in VITEEE Result 2026 has been officially announced by VIT University on its official website. Candidates who appeared for the entrance exam can now check and download their rank card online using their login credentials. Get the direct result link, counselling details, and importa... | VITEEE Result 2026 Out: Direct Link Available to Download Rank Card The Vellore Institute of Technology has officially released the VITEEE Result 2026 for candidates who appeared in the engineering entrance examination. Students can now check and download their VITEEE 2026 rank card through the official website by usin... | 1,780,498,627 |
https://www.sarthaks.com/3859680/the-following-plots-show-variation-of-velocity-with-time-of-ball-thrown-vertically-upward | The following plots show variation of velocity (v) with time (t), of a ball thrown vertically upward, and falling back. Which of the following plots is/are correct? (1) B only (2) A and E only (3) C only (4) D only | Correct Option is: (3) C only Taking upward direction as positive Initially velocity decreases in upward direction then speed increases in downward direction. | 1,780,498,627 |
https://www.sarthaks.com/3859862/ctet-september-registration-begins | CTET September 2026 Registration Begins The CTET September 2026 registration process has officially begun on the CTET official website. Candidates preparing for teaching jobs in central government schools can now apply online, check important dates, application fees, eligibility criteria, and complete details related t... | CTET September 2026 Registration Started at ctet.nic.in, Check Important Dates and Details The registration process for the Central Teacher Eligibility Test (CTET) September 2026 session has officially started from May 11, 2026. Candidates who want to become teachers for Classes 1 to 8 in central government schools can... | 1,780,498,627 |
https://www.sarthaks.com/3859740/neet-ug-answer-key-out | NEET UG 2026 Answer Key OUT The National Testing Agency (NTA) has released the NEET UG 2026 provisional answer key on the official website, neet.nta.nic.in. Candidates can now download their answer key, check OMR response sheets, calculate expected scores, and raise objections online before the final result declaration... | NEET UG 2026 Answer Key Released: Check Direct Link Here The National Testing Agency (NTA) has officially released the NEET UG 2026 Answer key on its official website. Candidates who appeared for the NEET UG 2026 examination can now download the answer key, check their recorded responses, and calculate their expected s... | 1,780,498,627 |
https://www.sarthaks.com/3859807/sikkim-board-class-10th-result | Sikkim Board Class 10th Result 2026 To Be Announced Soon The Sikkim Board of Secondary Education (SBSE) is expected to announce the Sikkim Board 10th Result 2026 soon. Students who appeared for the SBSE Class 10 examinations will be able to check their results online using their roll number through the official website... | SBSE Class 10th Result 2026: Check Your Result Soon The SBSE Class 10th Result 2026 is expected to be announced soon by the Sikkim Board of Secondary Education (SBSE). Students who appeared for the Class 10 board examinations held from March 7 to March 28, 2026, are eagerly waiting for their results. Once released, stu... | 1,780,498,627 |
https://www.sarthaks.com/3859871/company-decides-to-implement-matrix-structure-to-improve-communication-and-innovation | A company decides to implement a matrix structure to improve communication and innovation. Which of the following is most likely to be a drawback of adopting this structure? A. Slower decision-making due to rigid departmental boundaries B. High potential for role ambiguity and power conflicts C. Reduced flexibility in ... | Correct option: B. High potential for role ambiguity and power conflicts A matrix structure combines functional and project-based reporting, so employees often report to more than one manager. This can improve communication and innovation, but it commonly creates confusion about authority and responsibilities. | 1,780,498,627 |
https://www.sarthaks.com/3859872/yuki-is-considering-whether-to-set-factory-hong-kong-which-the-following-are-the-political | Yuki is considering whether to set up a factory in Hong Kong. Which of the following is/are the political and legal factor(s) that will encourage her to do so? (1) The government imposes a lower tax rate to encourage entrepreneurs to establish businesses in Hong Kong. (2) The government decides to impose a stricter env... | Correct option: C. (1) and (3) only Political and legal factors that encourage businesses usually include lower taxes and fewer restrictive regulations. (1) Lower tax rate → encourages businesses (2) Stricter environmental protection law → increases compliance costs, so not encouraging (3) Looser regulations on factori... | 1,780,498,627 |
https://www.sarthaks.com/3859873/which-of-the-following-statements-about-a-joint-venture-are-correct | Which of the following statements about a joint venture are correct? (1) This can be a way for firms to enter a new market. (2) The entity formed by a joint venture has a separate legal status. (3) A joint venture can be terminated with the consent of one of the parties involved. A. (1) and (2) only B. (1) and (3) only... | Correct option: A. (1) and (2) only Evaluate each statement about a joint venture: A way for firms to enter a new market → Correct Companies often form joint ventures with local firms to expand into new markets. The entity formed has a separate legal status → Correct Many joint ventures are established as separate lega... | 1,780,498,627 |
https://www.sarthaks.com/3859675/following-reaction-depicts-activity-particular-enzymes-identify-enzymes-following-options | The following reaction depicts the activity of a particular class of enzymes : Identify the enzymes class ‘E’ from the following options : (1) Ligases (2) Transferases (3) Lyases (4) Isomerases | Correct option: (3) Lyases Lyases are the enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds. • Transferases are the enzymes that catalyse a transfer of a group between a pair of substrates. • Isomerases catalyse inter-conversion of optical, geometric or pos... | 1,780,498,627 |
https://www.sarthaks.com/3859874/local-retail-chain-specializing-imported-frozen-foods-reviewing-business-strategy-2027 | A local retail chain specializing in imported frozen foods is reviewing its business strategy for 2027. The government has just announced a new carbon tax on refrigerated transport and cold storage facilities, while at the same time, consumer spending on premium imported goods is forecast to rise by 15% due to economic... | Correct option: C. Environmental (carbon tax) and Economic (consumer spending rise) The carbon tax imposed by the government relates to environmental policies aimed at reducing emissions → Environmental factor. The rise in consumer spending due to economic recovery is an Economic factor. | 1,780,498,627 |
https://www.sarthaks.com/3859793/cuet-ug-exam-day-guidelinesout | CUET UG 2026 Exam Day Guidelines Out The National Testing Agency has released the official CUET UG 2026 Exam Day Guidelines along with the dress code instructions for candidates appearing in the Common University Entrance Test (UG) 2026. Students are advised to carefully check the list of permitted and prohibited items... | CUET UG 2026 Exam Day Guidelines Released: Check Official PDF Here The National Testing Agency has released an important advisory regarding the dress code and permitted items for candidates appearing in the CUET UG 2026 exam. According to the official notice issued on 7 May 2026, the CUET UG 2026 examination will be co... | 1,780,498,627 |
https://www.sarthaks.com/3859705/tamil-nadu-board-class-12thresult | Tamil Nadu Board Class 12th Result 2026 Announced The Tamil Nadu Directorate of Government Examinations has announced the Tamil Nadu Board Class 12th Result 2026. Students who appeared for the Higher Secondary (Class 12) board examinations can now check their results online through the official website using their regi... | TN HSC Result 2026: Check Your Result Here The Tamil Nadu Directorate of Government Examinations has announced the TN HSC Result 2026. The evaluation process for the Class 12 board exams was recently completed, and the results have now been released on May 8, 2026. Students who appeared for the examinations can now che... | 1,780,498,627 |
https://www.sarthaks.com/3859885/dynamo-meter-flywheel-p | A shaft fitted with a flywheel rotates at 250 rpm and drives a machine. The torque of machine varies in a cyclic manner over a period of 3 revolutions. The torque rises from 750 N-m to 3000 N-m. uniformly during ½ revolution and remains constant for the following revolution. It then falls uniformly to 750 N-m during th... | 1,780,498,628 | |
https://www.sarthaks.com/3859757/tripura-board-class-10th-result | Tripura Board Class 10th Result 2026 Announced The Tripura Board Class 10th Result 2026 has been announced by the Tripura Board of Secondary Education. Students who appeared for the TBSE Madhyamik examinations can now check their results online through the official website using their roll number. | TBSE Class 10 Result 2026: Check Your Result Here The Tripura Board Class 10th Result 2026 has been released by the Tripura Board of Secondary Education. Students who appeared for the TBSE Class 10 board examinations conducted from February 26 to March 24, 2026, can now check their results online through the official w... | 1,780,498,628 |
https://www.sarthaks.com/3859790/up-home-guard-answer-key-out | UP Home Guard Answer Key 2026 Out The Uttar Pradesh Police Recruitment and Promotion Board has released the UP Home Guard Answer Key 2026 on its official website. Candidates who appeared in the examination can now download the provisional answer key, check their responses, and submit objections before the last date. | UP Home Guard Answer Key 2026 Released: Direct Link Here The Uttar Pradesh Police Recruitment and Promotion Board (UPPRPB) has officially released the UP Home Guard Answer Key 2026 on its official website. Candidates who appeared in the Home Guard recruitment examination can now download the provisional answer key and ... | 1,780,498,628 |
https://www.sarthaks.com/3859882/cbse12th-result-2026 | CBSE Class 12th Result 2026 (OUT) The CBSE Class 12th Result 2026 has been declared, ending the wait for students across the country. The result was released on May 13, 2026, as expected. Earlier, students were eagerly waiting for the official announcement, but now they can check their results online through the offici... | CBSE Class 12th Result 2026 Declared The Central Board of Secondary Education (CBSE) has released the CBSE Class 12th Result 2026 on May 13, 2026. The CBSE Class 12th Board Exam 2026 was conducted from February 17 to April 9, 2025 in pen-and-paper mode. Students who appeared for the exam can check their results online ... | 1,780,498,628 |
https://www.sarthaks.com/3859894/bitsat-session-2-city-allotment | BITSAT 2026 Session 2 City Allotment to Be Released Today The Birla Institute of Technology and Science (BITS) Pilani will release the BITSAT 2026 Session 2 city allotment today, May 12, 2026. Registered candidates will be able to check their allotted exam city online through the official BITS Pilani Admissions Website... | BITSAT 2026 Session 2 City Intimation Slip Releasing Today: Check Direct Link Soon The Birla Institute of Technology and Science (BITS) Pilani will release the BITSAT 2026 Session 2 city Intimation Slip today, May 12, 2026, on its official admission portal. Candidates who registered for the BITS Admission Test (BITSAT)... | 1,780,498,628 |
End of preview. Expand in Data Studio
Sarthaks Q&A Dataset
A large-scale question-answer dataset scraped from Sarthaks.com using Go, Colly, SQLite, and XML sitemap discovery.
Dataset Summary
- Total questions discovered: 1,850,743
- Total rows stored: 1,850,674
- Dataset format: Snappy-compressed Parquet
- Final compressed size: 592 MB
- Scraping duration: ~2 days
The dataset contains question-answer pairs extracted from publicly accessible pages indexed in the website sitemap.
Data Collection
Instead of brute-force crawling, URLs were collected directly from XML sitemaps exposed by the website.
Example sitemap structure:
<sitemap>
<loc>https://www.sarthaks.com/sitemaps/questions-1.xml</loc>
</sitemap>
Each sitemap contained question page URLs such as:
<url>
<loc>https://www.sarthaks.com/14/what-is-photosynthesis</loc>
</url>
Questions and answers were extracted using these selectors:
div.qa-q-view-content
div.qa-a-item-content
Dataset Structure
Example schema:
{
"url": "string",
"question": "string",
"answer": "string"
}
Usage
Load with Hugging Face Datasets
from datasets import load_dataset
dataset = load_dataset("YOUR_USERNAME/YOUR_DATASET_NAME")
Load with DuckDB
import duckdb
duckdb.sql("""
SELECT *
FROM 'data.parquet'
LIMIT 10
""")
Repository
GitHub repository containing scraping scripts and conversion utilities:
https://github.com/lsnnt/qa-db
Blog Post
Detailed write-up about the scraping pipeline and dataset creation process:
https://blog.lsnnt.dev/building-a-massive-q-a-dataset-from-sarthaks-com
Notes
- Some scripts in the repository are experimental and may require modification before use.
- The dataset was generated for educational and research purposes.
- Please respect the original website's terms and policies when reusing the data.
Citation
@misc{lsnnt,
author = { lsnnt and claude and noreply and chatgpt },
title = { sarthaks-dataset (Revision ea49c49) },
year = 2026,
url = { https://huggingface.co/datasets/nghjtvh/sarthaks-dataset },
doi = { 10.57967/hf/9032 },
publisher = { Hugging Face }
}
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