id
string
dataset
string
question
string
options
list
answer
string
explanation
string
medmcqa_2944
medmcqa
Lisch nodules (Pigmented Iris hamartomas) are seen in
[ "Niemann Pick disease", "Neurofibromatosis", "Ochronosis", "Glycogen storage disease" ]
B
Ans. b (Neurofibromatosis) (Ref. Harrison's Internal Medicine 17th ed., Chapter 374; RRM 7th ed., p.316)# Lisch nodules (iris hamartoma) and Optic gliomas = NF-1.# Glaucoma = Sturge Weber syndome.# Retinal angiomas = VHL# GlaucomaNEUROFIBROMATOSIS# Autosomal dominant inherited disorder- pure neurofibromas (= tumor of n...
pubmedqa_269
pubmedqa
Does obstructive sleep apnea affect aerobic fitness?
[ "yes", "no", "maybe" ]
C
mmlu_aux_4953
mmlu_auxiliary
Space travel is nothing new. The first spacecraft with a human was sent up into space in 1961. Since then, people have not only traveled to space, but also many of them have lived there in space stations for some time. The Soviet Union sent the first space station into space in 1971. This space station was called Saly...
[ "Exploring Space", "Space Travel", "Living in Space", "Space Stations" ]
D
null
arc_easy_119
arc_easy
Jonathan places a pot of water on a stove. As the water boils, how does the state of the water change?
[ "from gas to liquid", "from liquid to gas", "from liquid to solid", "from solid to liquid" ]
B
medmcqa_6520
medmcqa
Which muscle is irritated by inflamed retrocaecal appendix
[ "Psoas major", "Gluteus maximus", "Quadratus femoris", "Obturator internus" ]
A
Answer- A. Psoas majorIn children with abdominal pain, who hold their right hip in a flexed position to obtain relief from the pain, one should suspect retrocaecal appendicitis causing irritation ofthe psoas muscle.
qasc_6633
qasc
What things have positive impact on plants?
[ "pollution", "wind and animals", "hormones", "shockwaves" ]
B
openbookqa_399
openbookqa
Seasonal changes happens
[ "when some flowers cease to bloom in the cold months", "when ducks swim more in lakes", "when fish arise from water and sun themselves", "when all flowers bloom in the cold months" ]
A
arc_easy_1106
arc_easy
Young frogs do not resemble adult frogs. Which term is given to this pattern of development in frogs?
[ "asexual reproduction", "cloning", "metamorphosis", "biological adaptation" ]
D
medmcqa_7827
medmcqa
Deformity with decreased carrying angle is
[ "Cubitus varus", "Mannus varus", "Cubitus valgus", "Mannus valgus" ]
A
Refer Apleys 9th e p 372 Cubitus varus develops which is reduced carrying angle and Cubitus valgus is increased carrying angle
qasc_572
qasc
what do viruses contain?
[ "Mass", "DNA", "SNPs", "RNA" ]
D
aquarat_18987
aquarat
If all the 6 are replaced by 9, then the algebraic sum of all the numbers from 1 to 100(both inclusive) varies by
[ "A)330", "B)340", "C)350", "D)360" ]
A
1 11 21 .......91 2 12 22........92 3 13 23........93 . . . .. . .. . . . . .. .. . .. . . . .. . . .. . ... there are total 20 occurrence of 6. once place at 6 th row in every column and tens place in 6 th column and diff of 6 and 9 is 3 so 3*1*10+3*10*10 = 330 ANSWER:A
medmcqa_7987
medmcqa
What are the Rushton bodies ?
[ "Hyaline bodies of odontogenic cyst", "Refractile bodies of radicular cyst", "Bodies seen in ameloblastomes", "Hyaline bodies seen in dentigerous cysts" ]
A
Rushton Bodies Rushton Bodies or hyaline bodies of odontogenic cysts feature as eosinophilic, straight or curved, irregular or rounded structure within the epithelial lining of odontogenic cyst Rushton bodies occur almost exclusively within odontogenic cyst Ref: Shafers 6th edition Pgno : 268
qasc_6764
qasc
What causes weathering?
[ "swea", "Winter", "wind", "rivers" ]
C
medmcqa_6069
medmcqa
Which of the following disease modifying anti–rheumatic drugs (DMARDs) is the drug of first choice ?
[ "Methotrexate", "Gold compounds", "D-penicillamine", "Anakinra" ]
A
medmcqa_6748
medmcqa
An epidemiologic study evaluates the rate of dental caries and tooth abscesses among children living in communities within a metropolitan area. Investigators discover that the rate is high among children living in an upper-middle-class community but low in children living in a community below the poverty level. The lev...
[ "Copper", "Fluoride", "Iodine", "Selenium" ]
B
Water in some areas naturally contains fluoride, and dental problems in children are fewer in these areas because tooth enamel is strengthened. Fluoride can be added to drinking water, but opposition to this practice, from ignorance or fear, is common. Copper deficiency can produce neurologic defects. Iodine deficiency...
aquarat_29333
aquarat
A trained covered x km at 40 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 5x km.
[ "A)16", "B)18", "C)24", "D)40" ]
D
Total time taken = x/40 + 2x/20 hours = 5x/40 = x/8 hours Average speed = 5x/(x/8) = 40 kmph Answer: D
aquarat_26967
aquarat
Ram, Raj started a business in partnership, which Ram invested Rs.8000/- for 1 year, Raj invested Rs.16000/- for 2 years. At the end of the profit received by them is Rs.4000/-. What is Ram’s share?
[ "A)Rs. 1200", "B)Rs. 900", "C)Rs. 1000", "D)Rs. 800" ]
D
Answer: Solution: Ram : Raj = (8,000 * 1) : (16,000 * 2) = 1 : 4. So Ram's share = Rs. (4000 * 1/5) = Rs. 800. Answer: Option D
medmcqa_8696
medmcqa
Minimal Ascites can be best detected by:
[ "USG", "Plain X-ray abdomen", "MRI", "CT scan" ]
A
A i.e. USG Earliest detection Investigation Ascites USGQ Pericardial effusion EchocardiographyQ Bronchiectasis CT-ScanQ Fetal life DopplerQ Pleural effusion IA lateral decubitus viewQ Pneumoperitonum Erect chest X-ray or left lateral decubitus abdominal X-rayQ
medmcqa_9419
medmcqa
An eight year old boy presents with back pain and mild fever. His plain X-ray of the dorsolumbar spine reveals a solitary collapsed dorsal vertebra with preserved disc spaces. There was no associated soft tissue shadow. The most likely diagnosis is -
[ "Ewing's sarcoma", "Tuberculosis", "Histiocytosis", "Metastasis" ]
C
Solitary collapsed vertebra (vertebra plana) with preserved disc spaces in a child suggests the diagnosis of Eosinophilic granuloma (a type of Histiocytosis).
medmcqa_6552
medmcqa
A woman aged 35 year with delayed cycles and a history of primary infeility. On laparoscopic examination she has a normal uterus with bilateral enlarged ovaries, normal fallopian tubes, chromotubation shows blue dye spillage. What is the most probable cause?
[ "Endometriosis", "PCOS", "Ovarian cyst", "Tubo Ovarian mass" ]
B
PCOS (polycystic Ovarian Syndrome) / Stein Leventhal syndrome Features of PCOD / PCOS Obesity Insulin resistance / hyperinsulinemia Hyperandrogenemia Anovulation Metabolic X syndrome Oligomenorrhea Amenorrhoea Rotterdam / Eshre /Androgen excess Society /ASRM criteria Diagnostic requisites : Any 2 out of 3 Anovulation/ ...
medmcqa_1681
medmcqa
Pseudohemoptysis is caused by:
[ "Histoplasma capsulatum", "Serratia marcescens", "Proteus", "Klebsiella" ]
B
Serratia grows in sputum after collection and makes sputum red (pigment production) This condition is pseudohemoptysis.
openbookqa_3304
openbookqa
if a place has experienced fog, what could be responsible?
[ "there has been excess condensed vapor", "animals are reproducing currently", "the local deities are angry", "the water lacks oxygen" ]
A
medmcqa_1917
medmcqa
True about HIV epidemiology -
[ "Children rarely affected", "<10% of HIV infected person progress to AIDS", "Southern africa have 72% of total global burden", "Seminal secretion is more infectious than vaginal secretion" ]
A
Key facts about Epidemiology of HIV infection Reservoir: Cases and carriers Source: Virus is in greatest concentration in blood, seen and CSF (Lower concentrations in tear, saliva, breast milk, urine, cervical and vaginal secretions) Children under 15 years make only 3% cases Basic modes of transmission Sexual Blood an...
aquarat_34576
aquarat
In State X, all vehicle license plates have 2 letters from the 26 letters of the alphabet followed by 4 one digit numbers. How many different license plates can State X have if repetition of letters and numbers is allowed?
[ "A)23,400", "B)60,840", "C)67,600", "D)45,697,600" ]
D
The choices give us the answer without any calculations-- 4 one digits places can take 10*10*10*10 ways.. 2 letters places can be filled up in 26*26 ways ans= 26*26*10*10*10*10=45,697,600 ans D
medmcqa_9882
medmcqa
A 30 year old male patient presented with anterior granulomatous uveitis, ahralgia and respiratory difficulties. Probable diagnosis is
[ "Ocular sarcoidosis", "TB", "Behcet's syndrome", "HLA B27 Uveitis" ]
A
A i.e. Ocular sarcoidosis - Bechet's syndrome and HLA B27 associated uveitis are ruled out as both are non granulomatous. Sarcoidosis may cause granulomatous pan-uveitis, periphlebitis (causing candle wax drippingsQ or en taches de bougie), pulmonary lesions (Vt progressive dyspnea, pulmonary HTN & cor pulmonary), skin...
aquarat_17137
aquarat
In a simultaneous throw of two dice , what is the probability of getting to total of 10 or 11?
[ "A)5/4", "B)9/8", "C)4/11", "D)5/36" ]
D
n(S)36 n(E)=5 P(E)=5/36 Ans: D
medmcqa_1537
medmcqa
Spatial relationship of every atom in a molecule is known as:
[ "Conformation", "Configuration", "Both of the above", "None of the above" ]
A
The terms configuration and conformation are often confused: Configuration refers to the geometric relationship between a given set of atoms, for example, those that distinguish l- from d-amino acids. Interconversion of configurational alternatives requires breaking (and reforming) covalent bonds. Conformation refers ...
mmlu_aux_3639
mmlu_auxiliary
One Monday morning, Paul and his classmates were in science laboratory for their practical chemistry lesson. The students were going to work in pairs to do an experiment. Before they began, the teacher gave them this description of the different stages of the experiment. Stage 1: Prepare the equipment: a test tube, a c...
[ "Becausethe room was full of this strong smelling white gas.", "Because all the students started coughing and their eyes hurt.", "Becausethe liquid was a crylamide and that it is poisonous.", "Because someone was injured in the incident." ]
C
null
medmcqa_977
medmcqa
The principal characteristics of attention-deficit/hyperactivity disorder are all of the following except one. Which one is the exception?
[ "Inattention", "Mental retardation", "Hyperactivity", "Impulsivity" ]
B
Inattention and hyperactivity/impulsivity are the key behaviors of ADHD. Some people with ADHD only have problems with one of the behaviors, while others have both inattention and hyperactivity-impulsivity. Most children have the combined type of ADHD. In preschool, the most common ADHD symptom is hyperactivity. It is ...
medmcqa_3034
medmcqa
In post-hepatic jaundice, the concentation of conjugatedbilirubin in the blood is higher than that ofunconjugated bilirubin because :
[ "There is an increased rate of destruction of red blood cells.", "The unconjugated bilirubin is trapped by the bile stone produced in the bile duct.", "The conjugation process of bilirubin in liver remains operative without any interference.", "The UDP- glulcuronoyltransferase activity is in creased manifold ...
C
. The conjugation process of bilirubin in liver remains operative without any interference.
medmcqa_3681
medmcqa
What is the most probable diagnosis for on the x-ray of a 20 year old female who came with knee swelling
[ "Osteosarcoma", "Osteoclastoma", "Osteochondroma", "None of the above" ]
A
Sunburst appearance of Osteosarcoma Sunburst appearance is a type of periosteal reaction giving the appearance of a sunburst secondary to an aggressive The sunburst appearance occurs when the lesion grows too fast and the periosteum does not have enough time to lay down a new layer and instead the It is frequently asso...
medmcqa_2410
medmcqa
All the following are features of pseudotumor cerebri except -
[ "Normal-sized ventricles on CT scan", "Increased protein in CSF", "Papilledema", "Absence of focal neurological deficit" ]
B
medmcqa_5472
medmcqa
Pseudorosettes are seen in
[ "Retinoblastoma", "Ophthalmia nodosa", "Phacolytic glaucoma", "Trachoma" ]
A
Microscopic pathological study in Retinoblastoma shows various patterns like Homer-wright Flexner wintersteiner Fleurettes Refer khurana 6/e
aquarat_29096
aquarat
A train running at the speed of 100 km/hr crosses a pole in 18 seconds. What is the length of the train?
[ "A)300", "B)400", "C)500", "D)600" ]
C
Speed=(100 * 5/18) m/sec = (250/9) m/sec Length of the train = (Speed x Time) = (250/9 * 18) m = 500 m. Answer: C
medmcqa_8423
medmcqa
Fenton reaction leads to free radical generation when -
[ "Radiant energy is absorbed by water", "H202 is formed by myeloperoxidase", "Ferrous ion converted to ferric ion", "Nitric oxide is converted to peroxynitrite" ]
C
Ans. is 'c' i.e., Ferrous ions converted to ferric ions o Free radicals are generated through Fenton's reaction.o In this reaction iron is converted from its ferrous to ferric form and a free radical is generated,o The effect of these reactive species relevant to cells injury include;Lipid peroxidation of membranesOxid...
aquarat_23369
aquarat
In a particular state, 60% of the counties received some rain on Monday, and 65% of the counties received some rain on Tuesday. No rain fell either day in 25% of the counties in the state. What percent of the counties received some rain on Monday and Tuesday?
[ "A)12.5%", "B)40%", "C)50%", "D)60%" ]
C
60 + 65 + 25 = 150% The number is 50% above 100% because 50% of the counties were counted twice. The answer is C.
aquarat_32254
aquarat
If Jake loses 20 pounds, he will weigh twice as much as his sister. Together they now weigh 224 pounds. What is Jake’s present weight, in pounds?
[ "A)131", "B)135", "C)156", "D)177" ]
C
Lets say J is the weight of Jack and S is the wt of his sister. If he loses 20 pounds, he s twice as heavy as his sister. J-20=2*S Also, together they weight 224 pounds J+S=224 solvong the 2 equation ,we get J=156 pounds ! C
medmcqa_3647
medmcqa
On exertion urine stream increases in -
[ "Prostate enlargement", "Marion's disease", "Post. urethral valves", "Urethral stricture" ]
D
arc_easy_1593
arc_easy
Which two body systems work together to transport oxygen to the cells?
[ "skeletal and respiratory", "digestive and respiratory", "respiratory and circulatory", "respiratory and reproductive" ]
C
medmcqa_8415
medmcqa
Gold standard for reflux esophagitis is -
[ "Manometry", "Barium swallow", "24 hours pH study", "X-ray abdomen" ]
C
aquarat_1730
aquarat
If 20% of a number is equal to three-fifth of another number, what is the ratio of first number to the second number?
[ "A)3:1", "B)2:1", "C)1:3", "D)1:2" ]
A
Let 20% of A = 3/5 B. Then, 20A/100 = 3B/5 => 1A/5 = 3B/5 A/B = (3/5 * 5/1) = 3/1 A:B = 3:1. Answer: A
openbookqa_236
openbookqa
What can cause light to bounce off an object?
[ "something painted black", "surface with aluminium", "water condensation", "springs and coils" ]
B
aquarat_42118
aquarat
If (x/y)=(8/5), find the value (x^2+y^2)/(x^2-y^2)
[ "A)89/39", "B)59/11", "C)51/77", "D)41/11" ]
A
= (x^2+y^2)/(x^2-y^2) = ( x^2 /y^2+ 1)/ ( x^2 /y^2-1) = [(8/5)^2+1] / [(8/5)^2-1] = [(64/25)+1] / [(64/25)-1] = 89/39 Answer is A.
openbookqa_1312
openbookqa
New hydro-electric vehicles will result in gas stations
[ "eventually earning a lot of money", "being blown up by the governor of California", "eventually losing a lot of money", "reporting record third quarter growth" ]
C
pubmedqa_685
pubmedqa
Is breast cancer survival improving?
[ "yes", "no", "maybe" ]
A
qasc_7013
qasc
What is a cause of deposition of sediment to the earth?
[ "Dilution", "salt and water.", "flooding", "weathering" ]
D
aquarat_14132
aquarat
What is the product of all the prime factors of 21?
[ "A)20", "B)21", "C)18", "D)17" ]
B
factors : 1,3,7,21 3*7 =21 Answer : B
arc_challenge_350
arc_challenge
Which is a hypothesis that can be easily tested?
[ "The Moon causes high tides.", "During which season are the tides the highest?", "What is the phase of the Moon when tides are highest?", "When the Moon is full, the tides will be at their highest." ]
D
aquarat_20764
aquarat
Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?
[ "A)15", "B)13", "C)17", "D)19" ]
B
B 13 Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.
arc_easy_1436
arc_easy
During a lab investigation a scientist heats a solid substance. The scientist observes that the solid has two different melting points. The scientist is able to separate the two resulting liquids. Which statement best classifies the original solid substance?
[ "It was an atom.", "It was a mixture.", "It was an element.", "It was a compound." ]
B
qasc_5500
qasc
what is added to propane to change it through the boiling process
[ "vapors", "energy", "pH", "heat" ]
D
medmcqa_2439
medmcqa
All the following are features of Cardiac muscle Except
[ "Striated", "Large T tubules", "Troponin system present", "Caldesmon is impoant regulatory protein" ]
D
Some Differences among Skeletal, Cardiac, and Smooth MuscleNoSkeletal MuscleCardiac MuscleSmooth Muscle1StriatedStriatedNonstriated2No syncytiumSyncytialSyncytial3Small T tubulesLarge T tubulesGenerally rudimentary T tubules4Sarcoplasmic reticulum well developed andCa2+ pump acts rapidlySarcoplasmic reticulum present a...
qasc_4624
qasc
How can you extend the shelf life of food?
[ "Cook it", "Energy", "Buy it in bulk", "mutations" ]
A
mmlu_aux_2621
mmlu_auxiliary
Four decades ago a group of college students visited the mountains of Borneo to examine moth populations. Now a team of British scientists, including a member of the original trip, has returned to the same sites to repeat the survey. They have found that, due to rising temperatures, the insects now live 68 meters hig...
[ "this survey of moths has been carried out many times", "some scientists have put forward other explanations for the results", "scientists tried to repeat the original survey", "20-45% of tropical species were estimated to be at risk of extinction in 2004" ]
C
null
medmcqa_5221
medmcqa
Regarding sexual differentiation of the fetus?
[ "Gonadal development begins at 5th week of intrauterine life", "Y chromosome determines the differentiation of ovaries.", "Female external genitalia development is completed by 10 weeks.", "Male sexual differentiation occurs earlier than females" ]
D
Goandal development begins at 5th week of intrauterine life and Male sexual differentiation occurs earlier than female."The differentiation of the gonadal ridge into the testis by 43-50 days (7-8 wks) of gestation is a rapid phenomenon that contrasts with the slower and delayed development of the ovary, which will not ...
aquarat_16282
aquarat
Find the average of all prime numbers between 1 and 10
[ "A)2.5", "B)1.35", "C)4.25", "D)6.12" ]
C
Prime numbers between 1 and 10 are 2,3,5,7 Required average = (2+3+5+7)/4 = 17/4 = 4.25 Answer is C
medmcqa_1746
medmcqa
The advantage of unfilled methyl methacrylate is that:
[ "It can be finished smoothly", "It has a low degree of flow", "It's non-irritation to pulp", "It's wear resistant is high" ]
A
aquarat_8084
aquarat
If x + y = 9 and x – y = 3, then x^2 - y^2 =
[ "A)-4", "B)4", "C)10", "D)27" ]
D
The fastest approach has already been shown. Here's one more option. Given: x + y = 9 x – y = 3 Add the two equations to get: 2x = 12, which means x = 6 If x = 6, we can plug that value into either equation, to conclude that y = 3 If x = 6 and y = 3, then x² - y² = 6² - 3² = 27 Answer: D
qasc_7479
qasc
What is a major food source for other organisms, including humans?
[ "gastropod shells", "orchids", "invertebrates", "swamp vegetation" ]
C
qasc_3539
qasc
what will die if they become too cold?
[ "animal or plant", "most organisms", "freezing", "hydrogen and oxygen" ]
A
aquarat_3169
aquarat
For every even positive integer m, f(m) represents the product of all even integers from 2 to m, inclusive. For example, f(12)=2x4x6x8x10x12. What is the greatest prime factor of f(26)?
[ "A)23", "B)19", "C)17", "D)13" ]
D
f(26) = 2*4*6*8*10*12*14*16*18*20*22*24*26 The greatest prime factor in this list is 13. The answer is D.
qasc_7068
qasc
What is the type of cell division that creates sex cells?
[ "ligt", "babies", "pollen", "meiosis" ]
D
aquarat_2407
aquarat
If half of 5 were 3, that would one-third of 10 be
[ "A)2", "B)4", "C)6", "D)8" ]
B
Explanation: Half of 5 is 2.5. But given as 3. So take 1/2 of 5x = 3 ⇒ x = 6/5 Now 1/3 (10x) = 1/3 × 10 × 6/5 = 4. Answer: B
openbookqa_3273
openbookqa
A frog would most likely eat
[ "a cockroach", "another frog", "a maple leaf", "a mouse" ]
A
openbookqa_31
openbookqa
which one of these can help a person cook their food?
[ "a stack of clothes", "a stack of cans", "a pack of cigarettes", "a counter cooker appliance" ]
D
aquarat_33119
aquarat
Indu gave Bindu Rs.625 on compound interest for 2 years at 4% per annum. How much loss would Indu has suffered had she given it to Bindu for 2 years at 4% per annum simple interest?
[ "A)1", "B)2", "C)7", "D)4" ]
A
625 = D(100/4)2 D = 1 Answer:A
arc_challenge_528
arc_challenge
Directions Read the information about wind erosion then answer the question. Wind can cause erosion that changes the surface of the Earth. Wind erosion can have negative effects on the environment by removing soil and polluting the air during dust storms. What is one way to prevent wind erosion?
[ "People can drive off-road bikes across the desert.", "Ranchers can let their cattle graze in areas with little plant growth.", "Construction workers can wet the ground before driving on it or digging.", "Farmers can remove all plant material in the soil between planting seasons." ]
C
aquarat_31121
aquarat
How many different three-digit multiples of 5 can be composed of digits 1, 3, 4, and 5 if none of the digits is repeated?
[ "A)3", "B)6", "C)10", "D)12" ]
B
= 3c2 x 2 = 6 can you explain your method. i solved it differently XYZ, where Z must be 5. therefore 1 variation of digit in Z. Y can be any of the 3 possible choices. X can be any of the 2 possible choices. 2+3+1= 6 B
arc_easy_982
arc_easy
An object has a weight of 10 kg on the surface of Earth. If the same object were transported to the surface of Mars, the object would have a weight of 3.8 kg. Which best explains why the weight of the object changed when transported from Earth to Mars?
[ "The density of the object is greater on Earth than it is on Mars.", "The volume of the object is greater on Earth than it is on Mars.", "Gravitational force is greater on Earth than it is on Mars.", "Atmospheric pressure is less on Earth than it is on Mars." ]
C
qasc_2097
qasc
what are molecules that contain a single protein?
[ "genes", "animals", "alleles", "swea" ]
A
aquarat_19152
aquarat
How many kilograms of tea powder costing Rs. 31 per kg be mixed with 36 kilograms of tea powder costing Rs. 43 per kg, such that the mixture when sold at Rs. 44 per kg gives profit of 10%?
[ "A)12", "B)15", "C)20", "D)10" ]
A
SP of the mixture = 44, Profit =10%, Then CP = SP*100/110 44*100/110 = Rs. 40 per kg Using alligation rule, the required ratio = 31 43 \ / 40 / \ 3 9 = 1:3 If 36 kg is 3 part then 1 part is 36*1/3 =12 ANSWER:A
aquarat_38123
aquarat
A and B can do a piece of work in 10 days, B and C in 15 days, C and A in 12 days. How long will C take to do it?
[ "A)70 days", "B)55 days", "C)24 days", "D)40 days" ]
D
2c = 1/15+ 1/12– 1/10 = 1/20 c = 1/40 => 40 days Answer: D
qasc_7136
qasc
What can be startling?
[ "firecrackers", "an image", "Saltine crackers", "Wheat crackers" ]
A
medmcqa_3548
medmcqa
All are medically important streptococci except -
[ "Strep. pyogenes", "Strep. agalactiae", "Strep. equisimilis", "Strep. salivarius" ]
D
STREPTOCOCCI Streptococci are gram-positive, nonmotile, non-spore-forming, catalase & oxidase negative medically important bacteria. Many organisms of streptococcus genus cause human diseases.
medmcqa_7261
medmcqa
In a standard deviation of 2, confidence limit is
[ "68.30%", "95.40%", "99.70%", "76.20%" ]
B
(B) 95.4% # In a NORMAL CURVE, the area between one standard deviation on either side of the mean will include 68%, the area between two standard deviations 95.4% and the area between three standard deviations will include 99.7% of the values in the distribution.> In a Normal curve: Area between one standard deviation ...
aquarat_13286
aquarat
If x < y < z and y - x > 5, where x is an even integer and y and z are odd integers, what is the least possible value S of z - x?
[ "A)6", "B)7", "C)8", "D)9" ]
D
x<y<z To find the least possible value for z-x; we need to find the values for z and x that can be closest to each other. If x is some even number, then what could be minimum possible odd z. If x is some even number y-x>5; y>x+5; minimum value for y=x+5+2=x+7[Note: x+5 is as even+odd=odd and nearest odd greater than x+...
aquarat_10686
aquarat
If (x-15)(x-3) < 0, which of the following must be true?
[ "A)x^2 + 5x + 6 < 0", "B)x^2 + 5x + 6 > 0", "C)15 - x >0", "D)x - 5 < 0" ]
C
(x-15)(x-3)<0 can be written as (15-x)(x-3)>0 So,to inequality hold true multiple of (15-x) and (x-3) must be positive and if I let both elements positive/negative then the range becomes 3<x<15 Answer Choice C matched which says 15-x>0 or x<15,which must be true (I started to look from E to A for making easy decision f...
mmlu_aux_1841
mmlu_auxiliary
Green invaders are taking over America. Not invaders from space, but plants! You might not think of plants as dangerous, but in this case they are threatening nature's delicate food chain. The invaders are plants brought here from other countries to make gardens and yards look pretty. Ever since people started to arriv...
[ "Green invaders----local living things", "Green invaders----dangerous food chain", "Green invaders----environmental protectors", "Green invades----threat to local nature" ]
D
null
medmcqa_9985
medmcqa
Which of the following is false about glutathione
[ "It decrease free radicals, reduces oxidative stress", "Helps in conjugation reactions", "Cofactor of enzymes", "Converts hemoglobin to methemoglobin" ]
D
Glutatione suppress the formation of methemoglobin. Rest others are functions of glutathione. It is a important intracellular reducing substance.
mmlu_aux_3026
mmlu_auxiliary
Scientists have always been interested in the high level of organization in ant societies. American researchers have watched ants build life-saving rafts to keep afloat during floods. They also have documented how ant colonies choose their next queen--the female whose job is to produce eggs rather than seek food for ot...
[ "To stress their importance.", "To protect the smaller ants.", "To attract their enemies.", "To save their ant societies." ]
D
null
qasc_5021
qasc
What do manatees convert into mechanical energy?
[ "major threat to health", "chemical energy", "direct energy", "electrical energy" ]
B
aquarat_26300
aquarat
A and B together can do a work in 4 days. If A alone can do it in 20 days. In how many days can B alone do it?
[ "A)11", "B)5", "C)6", "D)8" ]
B
B 5 1/4 – 1/20 = 1/5 => 5
mmlu_aux_1848
mmlu_auxiliary
NASA is moving ahead with plans to put a long-armed Lander on Mars' icy North Pole to search for clues for water and possible signs of life. The $386 million Phoenix Mars is planned to touch down in the Martian arctic in 2008. The stationary probe will use its robotic arm to dig into the icy land and pick up soil sampl...
[ "find soil samples and send them to the earth", "look for the icy land to dig for the soil samples", "take photos and send them to the earth", "find the remains of the Mars Polar Lander" ]
B
null
arc_challenge_755
arc_challenge
Aquaculture is the raising of freshwater and marine plants and animals for food. How would a company raising fish best demonstrate good stewardship of natural resources?
[ "They would raise fish with as little pollution as possible.", "They would raise fish as economically as possible.", "They would raise fish from as many species as possible.", "They would raise fish to be as flavorful as possible." ]
A
mmlu_aux_4396
mmlu_auxiliary
Even though orbiters have eyed it from space and landers have rumbled across its surface, Mars still has more secrets to reveal. Two findings emerged this week: the possibility of an active glacier far from the planet's poles and evidence that sulfur--rather than carbon--was the element driving the planet's warmer clim...
[ "Any water reaching the martian surface will quickly evaporate and drift into space.", "It is known to all water, or of similar physical characteristic can't exist on the Mars.", "There seems to be an active glacier located in the mid-north latitudes of the Mars.", "The water ice accumulated at the martian po...
B
null
qasc_675
qasc
What has circulatory system with a two-chambered heart?
[ "sharks", "trout", "pan", "toads" ]
B
aquarat_39321
aquarat
The price of a T.V. set worth Rs. 30000 is to be paid in 20 installments of Rs. 1000 each. If the rate of interest be 6% per annum, and the first installment be paid at the time of purchase, then the value of the last installment covering the interest as well will be?
[ "A)22678", "B)26699", "C)29000", "D)19000" ]
C
Money paid in cash = Rs. 1000 Balance payment = (30000 - 1000) = Rs. 29000 Answer: C
arc_challenge_708
arc_challenge
Which relationship results in the highest level of evaporation from Earth's water reservoirs?
[ "greatest surface area and most direct sunlight", "greatest surface area and least direct sunlight", "least surface area and most direct sunlight", "least surface area and least direct sunlight" ]
A
aquarat_31889
aquarat
The average of 15 numbers is calculated as 30. It is discovered later on that while calculating the average, one number namely 36 was wrongly read as 26. The correct average is?
[ "A)12", "B)26", "C)16", "D)45" ]
D
15 * 30 + 36 – 26 = 450/10 = 45 Answer: D
mmlu_aux_4034
mmlu_auxiliary
In South America, the rich soil of the Amazon River basin in Brazil is known as "black gold". Scientists found that the secret of this rich soil was charcoal . Local people made it from animal bones and tree branches. They mixed the charcoal with the soil about 1.500 years ago. Now, scientists in the United States have...
[ "reduce the carbon dioxide", "keep the carbon in the soil", "reduce the loss of nutrients in the soil", "absorb the carbon dioxide" ]
B
null
aquarat_44567
aquarat
What is 30% of 210?
[ "A)61", "B)63", "C)65", "D)67" ]
B
X/210 = 30/100 100X = 210X30 X =(210X30)/100 X =6300/100 = 63 ANSWER = B = 63
mmlu_aux_3698
mmlu_auxiliary
As the population grows and temperatures rise, it will become more difficult to grow enough food for everyone. So, scientists are exploring the planet for plants that do not need as much water as today's crops. The Mojave Desert in the US state of California is home to some of these plants. Scientist Heather Rose Kates...
[ "is searching for the coyote melon", "is in charge of the research of agriculture", "feels somewhat pessimistic about the scientists' research", "thinks producing more food to feed the world is easy" ]
C
null
arc_easy_522
arc_easy
During which process does a caterpillar become a butterfly?
[ "fertilization", "metamorphosis", "asexual reproduction", "biological adaptation" ]
C
medmcqa_417
medmcqa
Which of the following measures sensitivity: September 2011
[ "True negatives", "True positives", "False positives", "False negatives" ]
B
Ans. B: True positives Sensitivity denotes true positives
medmcqa_6735
medmcqa
Which of the following is associated with Down syndrome: March 2010
[ "Raised PAPP-A level", "Decresed beta-HCG level", "Raised estriol level", "Decreased AFP level" ]
D
Ans. D: Decreased AFP level Alpha-fetoprotein is made in the pa of the womb called the yolk sac and in the fetal liver, and some amount of AFP gets into the mother's blood. In neural tube defects, the skin of the fetus is not intact and so larger amounts of AFP is measured in the mother's blood. In Down syndrome, the A...
openbookqa_125
openbookqa
Mothers have many roles, one of which is
[ "gestating and birthing", "making good dinner", "creating fun activities", "watching the babies" ]
A
medmcqa_1088
medmcqa
Risk factor for suicide -
[ "Female sex", "Unmarried", "Age 30 years", "Married" ]
B
Ans. is 'b' i.e., Unmarried Causes/Risk factors for suicidePsychiatric disorders : - Depression (most common), alcoholism (2nd me), Drug/Substance dependence, Schizophrenia, Dementia.Physical illness : - Cancer, AIDS, Multiple sclerosis, Head trauma.Psychosocial factors : - Failure in love, marital difficulties, family...
medmcqa_6137
medmcqa
False statement about post-dural puncture headache (PDPH):
[ "Breach of dura", "Onset of headache is usually 12-72 hours following procedure", "Commonly occipito - frontal in location", "Headache is relieved in sitting standing position" ]
D
Post Dural puncture Headache Pathophysiology - CSF leak - ICP |es - Traction on nerve fibres originating from piamater Site - Occipital > Frontal > Retrorbital Duration - 7-10 days Pathognomic sign - Change in posture aggravates headache Predisposing conditions - Dura cutting needle (spinal needle)* Most commonly seen ...
medmcqa_925
medmcqa
. When the confidence level of a testis increased which of the following will happen -
[ "No effect on significance", "Previously insignificant value becomes significant", "Previously significant value becomes insignificant", "No change in hypothesis" ]
B
mmlu_aux_3043
mmlu_auxiliary
Half of the world's population is affected by Asian monsoons , but monsoons are difficult to predict. American researchers have put together a 700-year record of the rainy seasons, which is expected to provide guidance for experts making weather predictions. Every year, damp air masses,known as monsoon,produce large am...
[ "The effects of Asian monsoons.", "The necessity of weather forecast.", "The achievements of Edward cook.", "A breakthrough in monsoon prediction." ]
D
null