id
string
dataset
string
question
string
options
list
answer
string
explanation
string
qasc_2784
qasc
What are usually acquired from contact with infected animals?
[ "bacteria", "seeds", "fever", "viruses" ]
D
mmlu_aux_3806
mmlu_auxiliary
Electricity, like clean water, is a resource that's often taken for granted. But last summer, when blackouts struck much of the northeastern US, Ontario and Rome, consumers on two continents were given a painful reminder of just how easily broken electricity supplies can be. The massive disorder stranded commuters, st...
[ "The future of alternative energy", "How the fuel cells works", "People's search for alternative energy", "The damage done by the blackout last summer." ]
C
null
arc_easy_1123
arc_easy
Wind changes the surface of Earth. Which of these land formations is a result of transportation and deposition by wind?
[ "a delta", "a glacier", "a sand dune", "a mountain peak" ]
C
medmcqa_1868
medmcqa
Temporal pallor in optic disc seen in all except
[ "Optic neuritis", "Compression of optic nerve", "Leber's hereditary optic neuritis", "Glaucoma" ]
D
Optic atrophy, pallor of the optic nerve head, is a sign found in patients with visual loss due to pathology of the optic nerve or retinal ganglion cells. ... It refers topallor of the optic disc which results from irreversible damage to the retinal ganglion cells and axons. It is commonly seen in Optic neuritis Compre...
medmcqa_9264
medmcqa
Retina is pa of ?
[ "CNS", "PNA", "ANS", "None" ]
A
Retina is a pa of CNS and develops from Neuroectoderm.
aquarat_41664
aquarat
Each side of a certain parallelogram has length 5. If the area of the parallelogram is 20. Which of the following is the measure of one of its angles?
[ "A)30", "B)45", "C)53.13", "D)90" ]
C
area of a parallelogram = b*h b*h=20 h=20/5=4 sin theta =opp/hyp= 4/5 theta = sin inv of 4/5=53.13 deg C
qasc_4707
qasc
Electromagnetic energy enters the body through what part of the eye?
[ "energy transport", "pupil", "iris", "skin" ]
B
medmcqa_9828
medmcqa
Which of the following statements i strue about bacteriophage
[ "it is bacterium", "Uit imparts toxigenicity to bacteria", "It helps in transformation", "It transfer only chromosomal gene" ]
B
Bacteriophage is a type of virus that soecifically infects bacteria and fungi.
mmlu_aux_3917
mmlu_auxiliary
Did you ever look up at the moon and think you saw a man's face there?When the moon is round and full,the shadows of the moon mountains and the lines of the moon valleys sometimes seem to show a giant nose and mouth and eyes. At least,some people think so. If there were a man on the moon -- instead of mountains and val...
[ "We can learn much from research on the moon.", "There may be human beings on the moon.", "If there were a man on the moon,there would be many similarities between the man on the moon and on the Earth.", "A telescope on the moon would help scientists have a clearer,closer sight of the stars." ]
A
null
openbookqa_816
openbookqa
A lady needs to be able to confirm what very small text reads on her pill bottle, so a ______ is necessary.
[ "microscope", "telescope", "magnifier", "binoculars" ]
C
medmcqa_597
medmcqa
Bilateral destruction of auditory cortex in man causes
[ "Almost total deafness", "Hearing defect for higher frequency sounds", "Deficiency in interpretation of sounds", "Inability for the orientation of sounds" ]
C
(C) Deficiency in interpretation of sounds # Lesion of auditory cortex leads to loss of recognition of total patterns with loss of analysis of properties of sound and sound localisation.> Thus lesion of auditory cortex leads to defect in interpretation of sounds.
aquarat_32416
aquarat
Shawn invested one half of his savings in a bond that paid simple interest for 2 years and received $550 as interest. He invested the remaining in a bond that paid compound interest, interest being compounded annually, for the same 2 years at the same rate of interest and received $605 as interest. What was the value o...
[ "A)$2,750", "B)$5,500", "C)$11,000", "D)$22,000" ]
A
SI for 1st year = 550/2=275 275+275+SI on (275)=605==> SI on 275=55==> SI on 275 = 275*R*1/100=55 R=20% Now using SI for 2 years on T/2 of the money (T/2)*20*2/100=550 T=550*5= 2750 ANSWER:A
mmlu_aux_2463
mmlu_auxiliary
Sharing not only exists between humanbeings.As is often seen that some plants and anima1s live close together, and they depend on each other. They are usually very different from their partner, and yet all live easier lives because of each other. It is nature's idea of sharing. An example of a partnership is the shark...
[ "Because he likes eating the waste given off by the shark", "Because he can help the shark to get food", "Because he needs the help of the shark to lead his way.", "Because he can get food and protection" ]
D
null
medmcqa_867
medmcqa
Not a marker for hyperparathyroidism is :
[ "Increase in serum calcium", "Increase in 24 hour urinary calcium excretion", "Decrease in serum calcitonin", "Subperiosteal resorption of phalanges" ]
C
Answer is C (Decrease in serum calcitonin) : Serum calcitonin is no marker fir hyperparathyroidism. It antagonizes the actions of parathyroid hormone and may be used as a modality of treatment of hypercalcemia secondary to hyperparathyroidism. Markers of hyperparathyroidism (|ed PTH): 1. Increased serum calcium: Stimul...
medmcqa_1338
medmcqa
Which of the following types of bronchogenic carcinomas are most likely to develop within a residual area of peripheral scar tissue?
[ "Small-cell carcinoma", "Squamous-cell carcinoma", ". Large-cell carcinoma", "Adenocarcinoma" ]
D
Adenocarcinomas are the most common primary lung cancer to develop within an area of peripheral scar. Scar tissue formation may be secondary to previous granulomatous disease (tuberculosis), infarction, or interstitial diseases of the lung associated with fibrosis (e.g., progressive systemic sclerosis). The pathogenesi...
medmcqa_2233
medmcqa
A 21yrs. old pt. attended a party the previous night and gives the following symptoms pain in abdomen radiating to back, pulse 100/ min, BP 100/76temp 39deg C and vomiting before coming Most probable dx is :
[ "Acute appendicitis", "Acute cholecystitis", "Acute diverticulitis", "Acute pancreatitis" ]
D
Ans. is 'd' ie Acute Pancreatitis * The signs and symptoms exhibited by the pt. correlate with that of acute pancreatitis, most characterstic of which is - Radiation of pain to back and party in previous night (ie. h/o alcohol)Other imp. diagnostic clue (not given in question) is- Relief from pain on sitting in upright...
mmlu_aux_4405
mmlu_auxiliary
On May 18,1969,NASA astronauts Thomas Stafford,John Young,and Eugene Cernan boarded the Apollo 10 lunar module --the fourth manned mission in the US Apollo Space program and only the second after Apollo 8 to circle the moon.Its mission was to circle the moon and thoroughly test the components and procedures to pave the...
[ "they were excited about the discovery", "they reported to NASA", "they were heading back to the lunar ground", "they thought they might be of little importance" ]
B
null
aquarat_31518
aquarat
The number of timeshare condos available at Sunset Beach is 2/5 the number of timeshare condos available at Playa del Mar. If the total number of timeshare condos available at the two beaches combined is 280, what is the difference between the number of condos available at Sunset Beach and the number of condos availabl...
[ "A)60", "B)90", "C)120", "D)150" ]
C
Let x be the number of timeshare condos available at Playa del Mar. Then number of timeshare condos available at Sunset Beach = 3/5x We know, x + 2/5 x = 280 Hence, x = 200. So, number of timeshare condos available at Playa del Mar = 200 the difference between the number of condos available at Sunset Beach and the numb...
aquarat_12016
aquarat
In how many ways can be 5 boys and 5 girls sit around circular table so that no two boys sit next to each other?
[ "A)(5!)^2", "B)(6!)^2", "C)5!4!", "D)11!" ]
C
first fix one boy and place other 4 in alt seats so total ways is 4! now place each girl between a pair of boys... total ways of seating arrangement of girls 5! total is 5!*4! ANS C
arc_easy_171
arc_easy
A student conducts an experiment using a common but potentially harmful bacteria culture. After working with the bacteria, which is the most important safety practice to follow?
[ "turn off any electrical equipment", "dispose of waste materials", "wash hands and tabletops thoroughly", "return materials to their proper place" ]
C
medmcqa_791
medmcqa
Investigation of choice for esophageal rupture is
[ "Dynamic MRI", "Rigid esophagoscopy", "Barium contrast swallow", "Water soluble low molecular weight contrast swallow" ]
D
Gastrografin (water soluble) is preferred to prevent extravasation of barium into the mediastinum or pleura. If no leak is seen, a barium study should follow
openbookqa_2757
openbookqa
If a person is choosing to be near a metal heat source, normally located on a building's interior wall, then that person
[ "is combusting", "is too hot", "desires warmth", "is on fire" ]
C
medmcqa_1133
medmcqa
Thiopentone is absolutely contraindicated in
[ "Porphyria", "Moribund patients", "Increased intracranial pressure", "Meningitis" ]
A
(Porphyria): (381 -- KDT 7th edition; 536- Goodman 12th7or variegate)Thiopentone can precipitate acut intermittent or variegate porphyria in susceptible individuals therefore contraindicated. The abnormal synthesis of protoporphyrin (important in hemoglobin production) results in excess porphobilinogen. Barbiturates in...
openbookqa_876
openbookqa
Aerial maps represent what feature using dark green?
[ "the slopes of the Rocky Mountains", "underwater ocean forests and coral", "trees packed close together", "The great northwestern plains" ]
C
medmcqa_3806
medmcqa
Treatment for scabies is
[ "Erythromycin", "Benzene hexachloride", "Piperazine", "Thiabendazole" ]
B
(B) Benzene hexachloride
qasc_5450
qasc
What happens to insects?
[ "They are eaten", "Damages them", "decrease stamina", "They may not survive." ]
A
medmcqa_9463
medmcqa
The monsaccharide glucose is best described by which one of the following statements?
[ "It usually exists in the furanose form", "It is a ketose", "It possesses an anomeric C-2 carbon atom", "It forms part of the disaccharide sucrose" ]
D
Two monosaccharide units are linked by a glycosidic bond or yield 2 monosaccharide units on hydrolysis. Depending on their reducing property, they are divided into: Nonreducing disaccharides: The functional groups are involved in the glycosidic bond formation, hence free functional groups are not available Reducing di...
aquarat_35234
aquarat
A baseball card decreased in value 25% in its first year and 10% in its second year. What was the total percent decrease of the card's value over the two years?
[ "A)28%", "B)30%", "C)32.5%", "D)36%" ]
C
Let the initial value of baseball card = 100 After first year , value of baseball card = (1- 25/100)* 100 = 75 After second year , value of baseball card =(1 - 10/100)* 75 = 67.5 total percent decrease of the card's value over the two years = (100-67.5)/100 *100% =31.5% Answer C
aquarat_38567
aquarat
Some part of the 50% solution of acid was replaced with the equal amount of 30% solution of acid. As a result, 40% solution f acid was obtained. what part of the original solution was replaced?
[ "A)1/5", "B)1/4", "C)1/2", "D)3/4" ]
C
Let X = Part of acid solution replaced, then 1-X will be the parts not replaced. (1-X)*0.5 + 0.3*x = 0.4 0.5 - 0.5X +0.3X = 0.4 -0.2X = -0.1 X=1/2 So the answer is C
qasc_6831
qasc
What keeps penguins warm?
[ "feathers", "muscles", "Blankets", "Animal fur" ]
A
aquarat_1499
aquarat
How many positive 5-digit integers have the odd sum R of their digits?
[ "A)9*10^2", "B)9*10^3", "C)10^4", "D)45*10^3" ]
D
We are looking at numbers between 10000 and 99999 both inclusive. There are 90000 numbers. Now for 10000 : sum of digits is odd; 10001 :sum of digits is even; 10002 : sum of digits is odd ; so on and so forth. So every alternate number is such that the sum of digit is odd. (Exception for the above statement : When it i...
openbookqa_2174
openbookqa
If you want to walk over a lake, which of these is necessary?
[ "happy dogs", "freezing temperatures", "meowing cats", "hot lava" ]
B
mmlu_aux_3035
mmlu_auxiliary
Broken rubber bands and flat tires requiring replacement could soon be a thing of the past. French researchers have developed a new kind of rubber that can repair itself when broken.The new rubber is made from widely available materials including vegetable oil and a common industrial chemical.All the materials are cons...
[ "It can be made as easily as common rubber.", "It is environmentally-friendly.", "It can repair itself at room temperature.", "It is made of smaller molecules." ]
D
null
qasc_2907
qasc
What do plants use to attract bees?
[ "nektar", "hormones", "chemicals", "necklaces" ]
A
aquarat_42949
aquarat
A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 7 runs. His new average is:
[ "A)38 runs", "B)37 runs", "C)39 runs", "D)40 runs" ]
A
Let average for 10 innings be x. Then, (10x + 108)/11 = x + 7 = 11x + 77 = 10x + 108 = x = 31. New average = (x + 7) = 38 runs. Answer:A
openbookqa_478
openbookqa
Why do zebras choose to live where they live?
[ "great location", "lovely view", "edible items", "good parking" ]
C
mmlu_aux_7092
mmlu_auxiliary
A person wants to conduct thermal energy through his house, so when deciding on construction materials, he chooses
[ "bits of nickel", "a wooden beam", "a plastic shelf", "a rubber mat" ]
A
null
aquarat_31138
aquarat
The radius of a cylindrical water tank is reduced by 50%. However, the speed by which water is filled into the tank is also decreased by 50%. How much more or less time W will it take to fill the tank now?
[ "A) 50% less time", "B) 50% more time", "C) 75% less time", "D) 75% more time" ]
A
(VC)Volume of the cylinderical vessal is directly proportional to R^2. So if radius is 50% less volume will be 1/4th of the original volume.(VC/4) Now if with velocity V tank can be filled in T1 time of volume VC So now Velocity is 50% less i..e V/2 So time taken to fill the capacity VC/4 by V/2 velocity is T2. VT1 = V...
aquarat_49937
aquarat
If 10 litres of an oil of Rs.55 per litres be mixed with 5 litres of another oil of Rs.66 per litre then what is the rate of mixed oil per litre?
[ "A)Rs.49.17", "B)Rs.51.03", "C)Rs.58.66", "D)Rs.55.33" ]
C
55*10 = 550 66*5 = 330 880/15 = 58.66 ANSWER:C
medmcqa_6550
medmcqa
MCardle's syndrome is due to
[ "Deficiency of glucose-6-phosphatase", "Absence of muscle phosphorylase", "Deficiency of liver phosphorylase", "Deficiency of liver phosphorylase kinase" ]
A
McArdle disease (also known as glycogen storage disease type V) is a disorder affecting muscle metabolism. The condition is caused by the lack of an enzyme called muscle phosphorylase. This results in an inability to break down glycogen 'fuel' stores. McArdle disease leads to pain and fatigue with strenuous exercise. R...
pubmedqa_153
pubmedqa
Are adult body circumferences associated with height?
[ "yes", "no", "maybe" ]
A
medmcqa_9593
medmcqa
Which of the following is seen at high altitude:September 2011
[ "Low PaO2", "High PaO2", "Normal PaO2", "High PaCO2, Low PaO2" ]
A
Ans. A: Low PaO2With increasing altitude, barometric pressure decreases, so the total pressure of the air decreases and pH2O and pCO2 remains constant So p02 and pN2 decreases progressively with heightHigh-altitude illnessUsually occurs at altitudes of over 1,500 m (4,921 ft)Caused primarily by hypoxia but is compounde...
aquarat_36779
aquarat
A salesperson gets a 15% commission on each sale he makes. How many sales of $270 each must he make in order to reach a salary of at least $1000?
[ "A)15", "B)24", "C)25", "D)26" ]
C
Soln:- 10% of 270 = 27. 5% of 270 = 13.5. so, 15 % of 270 = 40.5 total salary required 1000 earning from single sale 40.5 # of sale = 1000/40.5 = 24.62 Approx 25 sale ANSWER:C
aquarat_32970
aquarat
A person decided to build a house in 100days. He employed 100men in the beginning and 100 more after 20 days and completed the construction in stipulated time. If he had not employed the additional men , how many days behind schedule would it have been finished?
[ "A)40", "B)80", "C)70", "D)60" ]
B
200 men do the rest of the work in 100-20 = 80days 100 men can do the rest of the work in 80*200/100 = 160days Required number of days = 160-80 = 80 days Answer is B
aquarat_14904
aquarat
Ian is paid an hourly wage, totaling $400 for h hours of work in a week, where h >0. If Ian's hourly wage increases by 25% and Ian decides to work 25% fewer hours each week, how much will Ian be paid in a week?
[ "A)$200", "B)$375", "C)$400", "D)$425" ]
B
let No of hours ian worked = h and wage per hour = w therefore w*h = 400 if he decides to work 25% fewer hours = 0.75 * h and 25% more age is paid = 1.25 * w therefore 1.25*w*0.75*h = 1.25*0.75*400 = 375 ANSWER:B
arc_easy_1341
arc_easy
Which of the following allows a cell to become specialized?
[ "location of the cell in the body", "function of the cell in the body", "different patterns of gene expression", "different combinations of genes in the nucleus" ]
C
qasc_1702
qasc
What has a tail?
[ "squids", "Bats", "tomatoes", "sharks" ]
D
aquarat_12742
aquarat
In how many ways can 6 people, A, B, C, D, E, F be seated in a row such that C and D are not seated next to each other as well as A and B are not seated next to each other?
[ "A)384", "B)396", "C)576", "D)624" ]
D
Total # of arrangements of 6 people in a row is 6!; Now, let's find # of arrangements where C and D as well as A and B ARE seated next to each other. Consider them as a single unit: {AB}, {CD}, E, F. Now, these 4 units can be arranged in 4!, but we should multiply this number by 2*2 as A and B, as well as C and D withi...
mmlu_aux_4841
mmlu_auxiliary
Yang Liwei circled the earth 14 times in 21 hours on October 15 and 16, 2003, landing on the grasslands of Inner Mongolia. Looking a little tired, Yang stepped out of Shenzhou V, smiling and waving at the waiting people. "I feel very good." Yang said to Premier Wen Jiabao on the phone. Yang said to a newspaper, "For ou...
[ "There is no difference between China's spaceship and other countries.", "Yang Liwei knew he would be China's first spaceman long before.", "From the news, Yang Liwei was too excited to fall asleep.", "Yang was proud of the flight." ]
D
null
mmlu_aux_4505
mmlu_auxiliary
Imagine putting some bacteria in the freezer and taking them out millions of years later to find that they are still alive. That would be similar to what happened recently, when scientists brought eight-million-year-old bacteria back to life -- simply by thawing them out. The ancient bacteria were found frozen in the w...
[ "Ocean exploration.", "A scientific plan.", "A scientific discovery.", "An interesting experiment." ]
C
null
medmcqa_5621
medmcqa
Which of the following is most likely to produce a junctional scotoma
[ "Meningioma", "Craniopharyngioma", "Pituitary gland enlargement", "All the above" ]
A
Junctional scotoma is due to lesion at junction of Optic nerve and chiasma. Which is m/c due to meningioma.
aquarat_29051
aquarat
Out of 12 students in a class, 7 are wearing blue shirts, 3 are wearing green shirts, and 2 are wearing red shirts. Four students are to be selected at random. What is the probability that at least one is wearing a green shirt?
[ "A)25/33", "B)31/44", "C)41/55", "D)53/66" ]
C
Total possible ways to choose 4 students out of 12 = 12C4 = 495 The number of ways to choose 4 students with no green shirts = 9C4 = 126 P(no green shirts) = 126/495 = 14/55 P(at least 1 green shirt) = 1 - 14/55 = 41/55 The answer is C.
qasc_4416
qasc
What are vertebrates?
[ "voles", "pigs", "otters", "fish" ]
D
mmlu_aux_1740
mmlu_auxiliary
In 1977, Irene Pepperberg of Harvard University began studying what was on another creature's mind by talking to it. Her first experiments began with Alex. Alex was a one-year-old African grey parrot and Irene taught him to produce the sounds of the English language. "I thought if he learned to communicate, I could ask...
[ "singing them", "reading them", "writing them", "rehearing them" ]
D
null
aquarat_15448
aquarat
There are 4 girls and 4 boys. If they are to be seated in a row, what is the probability that no two girls sit together?
[ "A)A)1/8!", "B)B)6!5!/8!", "C)C)2*4!4!/8!", "D)D)2∗6!6!/12!" ]
C
If girls are alternate, then only no 2 girls can be together. So among 8 places, girls can be seated in 4 alternate places in 4! ways. And boys can be seated in the remaining 4 places in 4! ways. Therefore total number of ways = 4! * 4! But there could be 2 such arrangements--> 1. When first place is filled by a girl 2...
qasc_4591
qasc
What contains most of the energy used by people worldwided?
[ "heat", "Light", "coal", "grasses" ]
D
medmcqa_1157
medmcqa
Intolerance to loud sound, nerve affected is
[ "5th nerve", "7th nerve", "10th nerve", "None" ]
B
Clinical features of the 7th nerve palsy: Eyeball turns up and out Saliva dribbles Tears flow down Pain in the ear Noise intolerance Loss of taste Ref: Dhingra 7e pg 104.
aquarat_38239
aquarat
If a copier makes 2 copies every 4 seconds, then continues at this rate, how many minutes will it take to make 8,000 copies?
[ "A)266.67", "B)130", "C)140", "D)135" ]
A
2 copies 4 seconds 8000 copies = (8000*4)/2 seconds = 16000/60 minutes = 266.67 minutes Answer : A
openbookqa_1587
openbookqa
Adding heat energy to something can cook it, such as heating
[ "ice", "wood", "seashells", "cookie dough" ]
D
openbookqa_695
openbookqa
Which example best shows the effect of vibration on matter?
[ "a paper airplane", "a harpsicord", "a pillow", "box of candy" ]
B
qasc_6185
qasc
The most advantageous type of reproduction can be chosen when generational what is used?
[ "Plants growth", "alternation", "competition", "Chemical energy" ]
B
arc_easy_1313
arc_easy
Which property of proteins best allows them to perform an enormously diverse range of functions?
[ "their large, chemical-energy reserve", "their large, stored-electric potential", "the complexity of their folded structure", "the wide variety of elements they include" ]
C
aquarat_12746
aquarat
Express a speed of 36 kmph in meters per second?
[ "A)10 mps", "B)17 mps", "C)97 mps", "D)17 mps" ]
A
36 * 5/18 = 10 mps Answer: A
qasc_6850
qasc
What is essential for cellular respiration?
[ "Veins and arteries.", "kinetic energy", "The atmosphere", "Energy." ]
C
aquarat_37496
aquarat
Three gentlemen and three ladies are candidates for two vacancies. A voter has to vote for two candidates. In how many ways can one cast his vote?
[ "A)9", "B)30", "C)36", "D)15" ]
D
Solution: There are 6 candidates and a voter has to vote for any two of them. So, the required number of ways is, = 6C2 = 6!/2!*4! = 15. Answer: Option D
medmcqa_5846
medmcqa
Which among the following drugs produces a dose ceiling effect?
[ "Morphine", "Alfentanyl", "Remifentanyl", "Buprenorphine" ]
D
Buprenorphine is a paial mu receptor agonist. Unlike other opiates buprenorphine has a dose ceiling effect to its respiratory depressant dose response curve. Due to this effect, after the ceiling dose is reached additional dose of the drug will not elicit more respiratory depression. Reference: Clinical Anaesthesia edi...
medmcqa_7927
medmcqa
Gluconeogenesis can occur from all except
[ "Lactic acid", "Aceto acetate", "Glycerol", "Alanine" ]
B
Substrates for gluconeogenesis are lactate (lactic acid), pyruvate, glycerol, glucogenic amino acids (all amino acids except leucine and lycine), propionate and intermediates of the citric acid cycle.
qasc_6399
qasc
Urine is a product of what organ of the body that is excreted by the urinary system?
[ "bowel", "epidermal", "bladder", "alveoli" ]
C
medmcqa_5262
medmcqa
Accumulation of homogentisic acid causes which of the tissue changes?
[ "Ochronosis", "Tyrosinemia", "Albinism", "Tyrosinosis" ]
A
Ochronosis is the bluish black discoloration of ceain tissues, such as the ear cailage and the ocular tissue, seen with alkaptonuria. Alkaptonuria is a rare autosomal recessive metabolic disorder caused by deficiency of homogentisic acid oxidase. This deficiency results in accumulation and deposition of homogentisic ac...
medmcqa_9407
medmcqa
When gold fused with porcelain is fired at very high temperature, greenish discoloration of cervical margin is due to:
[ "High firing temperature", "Disintegration of opaque layer", "Presence of silver", "Formation of excess oxides" ]
C
Discoloration of the porcelain near the cervical region of the metal-ceramic prosthesis has been reported to occur when a silver-containing alloy is used as the substrate. Color changes included green, yellow-green, yellow-orange, orange and brown hues. This discoloration  phenomenon has generally been called “greening...
aquarat_18319
aquarat
A man walks half of the journey at 4 km/h by cycle does one third of journey at 12 km/h and rides the remainder journey in a horse cart at 9 km/h, thus completing the whole journey in 6 hours and 12 minutes. The length of the journey is
[ "A)36 km", "B)1332⁄67 km", "C)40 km", "D)28 km" ]
A
Let the length of the journey = x km. ∴ Journey rides by horse cart = x(1 - 1⁄2 - 1⁄3) = 1⁄6x km Then, total time taken to complete journey = 31⁄5hr ⇒ t1 + t2 + t3 = 31⁄5 ⇒ x⁄2 × 1⁄4 + x⁄3 × 1⁄12 + x⁄(6 × 9) = 31⁄5 ⇒ x = 31⁄5 × 216⁄37 = 36.2 km ≈ 36 km Answer A
aquarat_47971
aquarat
Three balls of different colors are to be placed in three different boxes such that any box contains at least 1 ball . What is the maximum number of different ways in which this can be done?
[ "A)60", "B)90", "C)120", "D)150" ]
A
Since the balls are all of different colors, let's permute them and then decide how many balls we put in each box. For example, arrange in a row the balls, then decide: two balls go into the first box, next two in the second box, and the last ball goes to the third box. Since in each box there must be at least one ball...
arc_easy_1439
arc_easy
What is the basic unit of life?
[ "atom", "cell", "element", "nucleus" ]
B
medmcqa_2207
medmcqa
The lack of ability of an individual to do his routine activity is -
[ "Disease", "Impairement", "Disability", "Handicap" ]
C
Disability defined as lack of ability of an individual to do his routine activity Disease defined as a condition in which body health is impaired, a depaure from a state of health, an alteration of human body interupting the performance of vital functions Impairment is defined as any loss or abnormality of psychologica...
aquarat_6103
aquarat
How many days are there in x weeks x days
[ "A)14x", "B)8x", "C)7x^2", "D)7" ]
B
Explanation: x weeks x days =(7×x)+x = 7 x+x=8x days Answer: Option B
qasc_1024
qasc
what will move to another area if their habitat can no longer support them?
[ "pigeons", "bears", "trees", "soil" ]
B
openbookqa_1251
openbookqa
Diverting overflow from a reservoir through pipes generates
[ "The Colorado River", "hydropower", "The Hoover Dam", "solar power" ]
B
qasc_5126
qasc
What can turn a lightbulb on?
[ "Electric current", "cigarettes", "Shining a flashlight on it", "hydrogen and oxygen" ]
A
openbookqa_1900
openbookqa
An example of an instinctive behavior is
[ "doing a cartwheel outside", "singing on a stage", "eating a large pizza", "a mother feeding the kids" ]
D
medmcqa_3609
medmcqa
A 70-years old male presented with asymptomatic white patch on oral cavity following application of the denture. Treatment of choice is
[ "Low does radiotherapy", "Biopsy of the all the tissues", "Asceaining that denture is fitted properly", "Antibiotics" ]
C
Leukoplakia regress spontaneously after stopping alcohol or tobacco consumption or correction of underlying cause
medmcqa_3407
medmcqa
Proposed guideline values for Radioactivity in Drinking water is
[ "Gross a activity 1.0 Bq/L and Gross b activity 10.0 Bq/L", "Gross a activity 1.0 Bq/L and Gross b activity 0.1 Bq/L", "Gross a activity 0.1 Bq/L and Gross b activity 1.0 Bq/L", "Gross a activity 10 Bq/L and Gross b activity 1.0 Bq/L" ]
C
Key guideline aspects of WHO recommended drinking water quality: – Colour < 15 true colour units (TCU) Turbidity < 5 nephlometric turbidity units (NTU) pH: 6.5 – 8.5 Total dissolved solids (TDS) < 600 mg/litre Zero pathogenic microorganisms Zero infectious viruses Absence of pathogenic protozoa and infective stages of ...
medmcqa_5995
medmcqa
Not true about angioneurotic edema ?
[ "Pitting edema of face, lips and mucous membrane", "C1 Esterase inhibitor deficiency can cause it", "Extreme temperature exposure can provoke it", "Known with ACE inhibitors" ]
A
Edema of angineurotic-edema is non-pitting. C1 esterase inhibitor deficiency can cause hereditary angioneurotic edema. Angioedema is a well known adverse effect of ACE inhibitors.
arc_easy_1477
arc_easy
Which object would best help a student determine if a block of an unknown material is magnetic?
[ "wooden ruler", "paper clip", "glass marble", "magnifying glass" ]
B
pubmedqa_314
pubmedqa
High cumulative insulin exposure: a risk factor of atherosclerosis in type 1 diabetes?
[ "yes", "no", "maybe" ]
A
mmlu_aux_8059
mmlu_auxiliary
Thermistors measure
[ "depth", "heat", "height", "pressure" ]
B
null
medmcqa_654
medmcqa
DOC for listeria meningitis:
[ "Ampicillin", "Cefotaxime", "Cefotriaxone", "Ciprofloxacin" ]
A
Ans. is 'a' i.e., Ampicillin Treatment of listeria infectiono The antibiotic of choice for listeria infection is ampicillin or penicillin G.Antibiotic regimens for listeria infection||||First line regimensPenicillin allergic patientsAlternative drugso Ampicillin or Penicillin is the drug of choiceo Trimethoprim sulpham...
aquarat_32409
aquarat
a and b are two numbers selected randomly from 1,2,3.... 25 what is the probability of a and b are not equal.
[ "A)24/28", "B)24/25", "C)24/209", "D)22/43" ]
B
Explanation: Total outcomes = 25 × 25 = 625 Probability of getting a and b are equal= 25 [ ∴ (1,1),(2,2),(3,3).....(25,25)] Probability of a and b or not equal = 1−256251−25625 = 600625600625 = 24/25 Answer: B
aquarat_30630
aquarat
A, B and C start a business each investing 2,000. After 6 months A withdrew 1000, B withdrew 1000 and C invests 1000 more. At the end of the year, a total profit of 6600 was recorded. Find the share of B.
[ "A)20,000", "B)21,200", "C)1,800", "D)20,500" ]
C
Ratio of the capitals of A, B and C = 2000 × 6 + 1000 × 6 : 2000 × 6 + 1000 × 6 : 2000 × 6 + 3000 × 6 = 18000 : 18000 : 30000 = 18 : 18 : 30 B’s share = (6600 × 18⁄66) = 1800 Answer C
aquarat_7715
aquarat
4 men&6women finish a job in 8days, while 3men&7women finish it in 10 days. In how many days will 10 women working together finish it ?
[ "A)50 days", "B)40 days", "C)60 days", "D)70 days" ]
B
Let 1 man's 1 day work = x and 1 woman's 1 days work = y. Then, 4x + 6y = 1/8 and 3x+7y = 1/10 solving, we get y = 1/400 [means work done by a woman in 1 day] 10 women 1 day work = 10/400 = 1/40 10 women will finish the work in 40 days (B)
mmlu_aux_3311
mmlu_auxiliary
There are 115 distinct species of pine trees with 35 native to North America. Pines are defined as evergreens with long, needle-like leaves and are only native to the northern hemisphere. Pine trees are an adaptable and tough species that can survive in many conditions where other plants cannot. The average pine is 45 ...
[ "the Mexican pine has the longest leaves", "the Jack pine doesn't seem to belong to the same family as the other pine trees", "the bull pine is a kind of little pine tree", "all the pine trees mentioned have a great number of leaves" ]
B
null
arc_easy_1585
arc_easy
Which of these is most likely the cause of a father and son having almost identical-sounding voices?
[ "learned behaviors", "environmental conditions", "inherited characteristics", "instinctive characteristics" ]
C
aquarat_23574
aquarat
A train covers a distance of 12 km in 10 min. If it takes 15 sec to pass a telegraph post, then the length of the train is?
[ "A)100", "B)300", "C)120", "D)400" ]
B
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec = 20 m/sec. Length of the train = 20 * 15 = 300 m. Answer: Option B
aquarat_35577
aquarat
daal is now being sold at rate Rs.20 a kg.During last month its rate was Rs 16 per kg.By How reduce percent should a family its consumption so as to keep the expenditure fixed?
[ "A)10%", "B)20%", "C)30%", "D)40%" ]
B
Last month rate= 16 per kg this month rate = 20 per kg if 20=100% then 16= ? therefore %= (16 * 100)/20=80% to reduce consumption 100-80=20% ANSWER:B
qasc_3188
qasc
What in an airplane can mutate organisms?
[ "an anion", "Damages them", "Jet fuel", "light energy" ]
C
aquarat_8394
aquarat
A man rows his boat 95 km downstream and 60 km upstream, taking 2 hours each time. Find the speed of the stream?
[ "A)76 kmph", "B)6 kmph", "C)9 kmph", "D)8 kmph" ]
C
Speed downstream = d/t = 95/(2) = 48 kmph Speed upstream = d/t = 60/(2) = 30 kmph The speed of the stream = (48 - 30)/2 = 9 kmph Answer:C
aquarat_39112
aquarat
If n + 14 is a positive odd integer, which of the following must be true about the sum of the next four integers?
[ "A)It is a multiple of 3", "B)It is a multiple of 4", "C)It is a multiple of 2", "D)It is a multiple of 5" ]
C
n+14 is a positive odd integer. This means n will be an odd integer The next 4 integers would be: n + 14, n + 15, n + 16, n + 17 Sum = 4n + 62 This sum will always be even. Option C
pubmedqa_517
pubmedqa
Living in an urban environment and non-communicable disease risk in Thailand: Does timing matter?
[ "yes", "no", "maybe" ]
A
arc_easy_2073
arc_easy
Louis Pasteur discovered that the bacteria in a substance can be killed by heating the substance for a short period of time. Which of these practices benefited most from Pasteur's discovery?
[ "storing foods for longer periods of time", "building ovens and other heating devices", "creating medicines that cure infections", "transporting living organisms without injuring them" ]
A
aquarat_8390
aquarat
An assembly line produces 36 cogs per hour until an initial order of 60 cogs is completed. The speed of the assembly line is then immediately increased so that it can produce 60 cogs per hour until another 60 cogs are produced. What is the overall average output, in cogs per hour, for the assembly line during this whol...
[ "A)38", "B)40", "C)42", "D)45" ]
D
The time to produce the first 60 cogs is 60/36 = 5/3 hours. The time to produce the next 60 cogs is 60/60 = 1 hour. The average output is 120 cogs / (8/3) hours = 45 cogs per hour. The answer is D.
medmcqa_8275
medmcqa
Type II hypersensitivity -
[ "Blood transfusion reaction", "Ahus reaction", "Hay Fever", "Glomerulonephritis" ]
A
autoimmune haemolytic anaemia, transfusion reactions,idiopathic thrombocytopenic purpura,graves disease,myasthenia gravis are the examples of type 2 hypersensitivity.Harshmohan textbook of pathology 7th edition