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ARC-Challenge
arc_04_02211
Corn is widely being used in the United States to make ethanol for use in automobile fuel. How might the overproduction of corn negatively affect the environment?
[ "decreasing soil fertility", "decreasing oil transportation", "increasing the greenhouse effect", "increasing carbon dioxide emissions" ]
A
null
sciq
sciq_01_09390
The thick tunica media allows muscular arteries to play a leading role in what?
[ "vasoconstriction", "inhibition", "accumulation", "vasodilation" ]
A
Farther from the heart, where the surge of blood has dampened, the percentage of elastic fibers in an artery’s tunica intima decreases and the amount of smooth muscle in its tunica media increases. The artery at this point is described as a muscular artery. The diameter of muscular arteries typically ranges from 0.1 mm...
sciq
sciq_01_04828
In which way do vertebrates reproduce?
[ "unisexually", "asexually", "bisexually", "sexually" ]
D
Vertebrates reproduce sexually, and almost all of them have separate male and female sexes. Generally, aquatic species have external fertilization, whereas terrestrial species have internal fertilization. Can you think of a reason why aquatic and terrestrial vertebrates differ in this way?.
medmcqa
medmcqa_05_02448
Fastest acting schizontocidal drug among the fillowfol is
[ "Aemether", "Mefloquine", "Chloroquine", "Proguanil" ]
A
Ref-KDT 6/e p792 Aemisinin derivatives like dihydroaemisinin,aeether and aemether etc fastest acting anti malarial drugs
sciq
sciq_01_04128
Distance traveled divided by time is equal to what?
[ "direction", "momentum", "frequency", "speed" ]
D
Average speed is calculated by dividing the total distance travelled by the time interval. For example, someone who takes 40 minutes to drive 20 miles north and then 20 miles south (to end up at the same place), has an average speed of 40 miles divided by 40 minutes, or 1 mile per minute (60 mph). Average velocity, how...
ARC-Challenge
arc_04_02799
Apple trees can live for many years, but bean plants usually live for only a few months. This statement suggests that
[ "different plants have different life spans", "plants depend on other plants", "plants produce many offspring", "seasonal changes help plants grow" ]
A
null
math_qa
mathqa_03_03006
the average weight of a group of boys is 20 kg . after a boy of weight 36 kg joins the group , the average weight of the group goes up by 1 kg . find the number of boys in the group originally ?
[ "12", "15", "18", "24" ]
B
"let the number off boys in the group originally be x . total weight of the boys = 20 x after the boy weighing 36 kg joins the group , total weight of boys = 20 x + 36 so 20 x + 36 = 21 ( x + 1 ) = > x = 15 answer : b"
sciq
sciq_01_08382
What can lead to a loss of genetic variation within populations?
[ "natural selection", "genetic drift", "adaptation", "migration" ]
B
openbookqa
obqa_02_03646
Which of the following would have best aided a vessel at sea in crossing the sea in the 18th century?
[ "A radar system", "An old soothsayer", "An experienced navigator", "A crow's nest" ]
C
An example of navigation is directing a boat
math_qa
mathqa_03_03781
the guests at a football banquet consumed a total of 406 pounds of food . if no individual guest consumed more than 2.5 pounds of food , what is the minimum number of guests that could have attended the banquet ?
[ "160", "161", "162", "163" ]
D
"to minimize one quantity maximize other . 162 * 2.5 ( max possible amount of food a guest could consume ) = 405 pounds , so there must be more than 162 guests , next integer is 163 . answer : d ."
medmcqa
medmcqa_05_00692
A Malnourished child from a poor socioeconomic status, residing in overcrowded and diy areas present with a nodule around the limbus with hyperemia of surrounding conjunctiva in his left eye. He is also observed to have axillary and cervical lymphadenopathy. Which of the following is the most likely diagnosis:
[ "Phlyctenular conjunctivitis", "Foreign body granuloma", "Vernal keratoconjunctivitis", "Episcleritis" ]
A
Ans. Phlyctenular conjunctivitis
math_qa
mathqa_03_00131
the overall age of x and y is 10 year greater than the overall age of y and z . z is how many decades younger that x ?
[ "11", "10", "12", "17" ]
B
"b 10 ( x + y ) â € “ ( y + z ) = 10 x â € “ z = 10"
math_qa
mathqa_03_04927
a truck covers a distance of 360 km at a certain speed in 8 hours . how much time would a car take at an average speed which is 18 kmph more than that of the speed of the truck to cover a distance which is 14 km more than that travelled by the truck ?
[ "6 hours", "5 hours", "7 hours", "8 hours" ]
D
"explanation : speed of the truck = distance / time = 360 / 8 = 45 kmph now , speed of car = ( speed of truck + 18 ) kmph = ( 45 + 18 ) = 63 kmph distance travelled by car = 360 + 81 = 441 km time taken by car = distance / speed = 441 / 63 = 8 hours . answer – d"
sciq
sciq_01_03819
What rises through solid rocks where conditions are right?
[ "crystals", "magma", "nitrogen", "water" ]
B
Lithospheric plates do a lot of moving on Earth's surface. Slabs of lithosphere smash into each other. They move sideways past each other along faults. Where conditions are right, magma rises through solid rock. It's no wonder that rocks experience stress! Rocks respond differently to different types of stress and unde...
openbookqa
obqa_02_02207
After dark clouds roll in and the weather changes, clouds may
[ "wilt", "precipitate", "burn", "zap" ]
B
An example of stormy weather is rain
openbookqa
obqa_02_03038
if white cold items drop from the sky, what might these be?
[ "a gift from the heavens", "a cloud is crying", "it is an anomaly", "it is ice precipitation" ]
D
snow falls during the winter in the arctic environment
math_qa
mathqa_03_04756
it was calculated that 75 men could complete a piece of work in 25 days . when work was scheduled to commence , it was found necessary to send 25 men to another project . how much longer will it take to complete the work ?
[ "28 days .", "30 days .", "37.5 days .", "40 days ." ]
C
"one day work = 1 / 25 one man ’ s one day work = 1 / ( 25 * 75 ) now : no . of workers = 50 one day work = 50 * 1 / ( 25 * 75 ) the total no . of days required to complete the work = ( 75 * 25 ) / 50 = 37.5 answer : c"
ARC-Challenge
arc_04_02396
A person cuts down a living oak tree. The person burns the wood from the oak tree to boil water. Which sequence correctly orders the energy transformations that occurred from the living tree to the boiling of water?
[ "light energy → chemical energy → thermal energy", "thermal energy → chemical energy → light energy", "chemical energy → mechanical energy → electrical energy", "electrical energy → mechanical energy → chemical energy" ]
A
null
openbookqa
obqa_02_00600
Fish are quickly caught in water because of the webbed feet possessed by a
[ "cheetah", "penguin", "hippopotamus", "snake" ]
B
webbed feet are used for moving faster through water by aquatic animals
medmcqa
medmcqa_05_00708
Ohobaric oxygen is used in:-
[ "CO poisoning", "Ventilation failure", "Anerobic infection", "Gangrene" ]
A
Ans is 'a' i.e., CO Poisoning Ohobaric Oxygen - 100% oxygen at atmospheric pressure. Ohobaric oxygen is used in CO poisoning. It reduces the half life of carboxyhemoglobin complex. About use of hyperbaric oxygen in CO poisoning. - Although hyperbaric oxygen therapy is often recommended for patients with coma, syncope, ...
sciq
sciq_01_10845
What does ubiquitin indicate about a protein's lifespan?
[ "initiation", "reaction ratio", "completion", "transaction" ]
C
Sometimes these modifications can regulate where a protein is found in the cell—for example, in the nucleus, the cytoplasm, or attached to the plasma membrane. Chemical modifications occur in response to external stimuli such as stress, the lack of nutrients, heat, or ultraviolet light exposure. These changes can alter...
openbookqa
obqa_02_01212
What is decomposed in decomposition?
[ "lifeless life forms", "living creatures", "metals", "plastics" ]
A
decomposition is when a decomposer breaks down dead organisms
ARC-Easy
arc_04_00795
Most birds sit on their eggs until they hatch. Which of these is the most important reason why birds sit on their eggs?
[ "to keep the eggs inside the nest", "to keep the eggs warm", "to protect the eggs from the wind", "to protect the eggs from the rain" ]
B
null
sciq
sciq_01_08224
Continental climates are generally found in what areas of landmasses?
[ "wetlands", "northerly", "inland", "buttes" ]
C
Farther inland, the climate is influenced by cold or hot air from the land. This air may be dry, because it comes from over land. An inland climate is usually more extreme. Winters may be very cold, and summers may be very hot. Precipitation can be low. This is a continental climate .
sciq
sciq_01_10870
When carbon atoms are not bonded to as many hydrogen atoms as possible, what kind of hydrocarbon results?
[ "unsaturated", "saturated", "unstable", "aqueous" ]
A
Unsaturated hydrocarbons have at least one double or triple bond between carbon atoms, so the carbon atoms are not bonded to as many hydrogen atoms as possible. In other words, they are unsaturated with hydrogen atoms.
sciq
sciq_01_04669
Glaciers modify the landscape by what?
[ "truncation", "silt", "sediment", "erosion" ]
D
Glaciers modify the landscape by erosion. They also modify the landscape by deposition. Glaciers carry an enormous amount of material and dump it. The features they leave behind show where they were and what happened as they were melting away.
sciq
sciq_01_03847
In winter, water does what, becoming solid and causing hoses to rupture and engine blocks to crack?
[ "freeze", "crystallizes", "shrinks", "fractures" ]
A
In the winter, the temperature often gets well below the freezing point of water. This condition can create problem in car radiators. If the water freezes, water hoses will break, the engine block can crack, and significant damage can be done to the car.
sciq
sciq_01_07332
What is made of gases that are essential for photosynthesis and other life activities?
[ "atmosphere", "stratosphere", "ocean", "air" ]
A
The atmosphere is made of gases that are essential for photosynthesis and other life activities.
sciq
sciq_01_11591
Organisms that lack both a nucleus and membrane-bound organelles are known as what, in general?
[ "trophic", "prokaryotic", "photosynthetic", "barren" ]
B
Two of the three domains—Bacteria and Archaea—are prokaryotic, meaning that they lack both a nucleus and true membrane-bound organelles. However, they are now considered, on the basis of membrane structure and rRNA, to be as different from each other as they are from the third domain, the Eukarya. Prokaryotes were the ...
openbookqa
obqa_02_00847
A fox that has white fur
[ "has been bleached or washed", "is genetically altered and abused", "is a very clean animal", "got it from genetics" ]
D
the coloration of fur is an inherited characteristic
ARC-Challenge
arc_04_03080
Food webs show feeding relationships among different types of organisms. Those organisms each have a specific niche. Which of the following best describes a function of decomposers in food webs?
[ "to recycle nutrients into soil", "to convert solar energy into food", "to provide food for secondary consumers", "to compete with secondary consumers for oxygen" ]
A
null
math_qa
mathqa_03_01823
there were two candidates in an election . winner candidate received 62 % of votes and won the election by 312 votes . find the number of votes casted to the winning candidate ?
[ "806", "744", "912", "1200" ]
A
"w = 62 % l = 38 % 62 % - 38 % = 24 % 24 % - - - - - - - - 312 62 % - - - - - - - - ? = > 806 answer : a"
ARC-Challenge
arc_04_02702
An engineer must calculate the potential energy of a roller coaster car at the top of an incline. Which information would best help the engineer determine the potential energy of the car?
[ "the distance the roller coaster car must travel", "the mass of the roller coaster car at full capacity", "the average weight of an empty roller coaster car", "the direction that the roller coaster car is traveling" ]
B
null
math_qa
mathqa_03_03287
there has been successive increases of 25 % and then 15 % in the price of gas from the previous month . by what percentage should a driver reduce gas consumption so that the expenditure does not change ?
[ "30 %", "50 %", "66.66 %", "15 %" ]
A
let p be the original price per unit of gas . let x be the original gas consumption . let y be the reduced gas consumption . y * 1.15 * 1.25 * p = x * p y = x / ( 1.15 * 1.25 ) which is about 0.7 x which is a decrease of about 30 % . the answer is a .
medmcqa
medmcqa_05_02842
Most impoant inflammatory mediator?
[ "TNF", "IL-2", "Interferon", "PAF" ]
A
Tumour necrosis factor is the most impoant inflammatory mediator since it induce other cytokines as well Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg: 155
openbookqa
obqa_02_01305
A lion is hunting antelope. The antelope are fast, faster than the lion expected. To eat today, the lion needs
[ "to find more water", "to catch up to it", "to enjoy its day", "to wear better shoes" ]
B
if an organism 's prey moves quickly then that organism may need to move quickly to catch its prey
openbookqa
obqa_02_04030
People dumping their trash in the ocean does what to the animals and plant life
[ "flies", "types", "dirties their habitat", "reads minds" ]
C
humans discarding waste in an environment causes harm to that environment
sciq
sciq_01_05965
The number, size, shape, and banding pattern of chromosomes make them easily identifiable in a what?
[ "spirogyra", "nanocyte", "xerophyte", "karyogram" ]
D
13.2 Chromosomal Basis of Inherited Disorders The number, size, shape, and banding pattern of chromosomes make them easily identifiable in a karyogram and allows for the assessment of many chromosomal abnormalities. Disorders in chromosome number, or aneuploidies, are typically lethal to the embryo, although a few tris...
sciq
sciq_01_08392
Ice ages, continental drift, and giant meteorites striking earth have caused what phenomenon?
[ "extinction", "waves", "depletion", "gravity" ]
A
The evolution of life on Earth wasn’t always smooth and steady—far from it. Living things had to cope with some astounding changes. Giant meteorites struck Earth’s surface. Continents drifted and shifted. Ice ages buried the planet in snow and ice for millions of years at a time. At least five times, many, if not most,...
openbookqa
obqa_02_04320
24 hours is equal to one what?
[ "minute", "day-night cycle", "year", "moment" ]
B
one day is equal to 24 hours
sciq
sciq_01_01219
The fetus is connected to what by a tube called the umbilical cord?
[ "Fallopian tube", "placenta", "Stomach", "Intestines" ]
B
The placenta is a spongy mass of blood vessels. Some of the vessels come from the mother. Some come from the fetus. The placenta is attached to the inside of the mother’s uterus. The fetus is connected to the placenta by a tube called the umbilical cord . The cord contains two arteries and a vein. Substances pass back ...
openbookqa
obqa_02_03568
Which of these is likely to get hot
[ "an angel", "a kite", "a bird", "space craft" ]
D
if an object is hot then the surfaces of that object are hot
medmcqa
medmcqa_05_01534
Which of the following antibodies is the most specific for the diagnosis of rheumatoid arthritis?
[ "IgA", "IgG", "IgM", "Anti-CCP" ]
D
Ans. d. Anti-CCP (Ref: Harrison 19/e p2136, 18/e p2745; CMDT 09/727)Anti-CCP antibodies are the most specific blood test for the diagnosis of rheumatoid arthritis."Anti CCP antibodies are the most specific blood test for rheumatoid arthritis (specificity ~95%)."- CMDT 09/727"Anti-cyclic citrullinated peptide (anti-CCP)...
sciq
sciq_01_08217
Fractures and faults are terms you hear when talking about?
[ "storms", "earthquakes", "magnets", "volcanoes" ]
B
Compare fractures and faults and define how they are related to earthquakes.
openbookqa
obqa_02_03915
Thermal energy is used in a light bulb, which makes filaments
[ "quite chilly", "cool to touch", "frosted over", "hurt to touch" ]
D
an incandescent light bulb converts electricity into heat by sending electricity through a filament
openbookqa
obqa_02_03069
Calculating a short distance can be accomplished with a
[ "yard stick", "thought", "touch", "a penny" ]
A
a meter stick is used to measure length
sciq
sciq_01_06590
Ecologists already use the abilities of many prokaryotes to carry out bioremediation of soils and what else?
[ "gas", "water", "plasma", "air" ]
B
sciq
sciq_01_10867
Goldfish, tuna, salmon, perch, and cod are examples of which group of fish?
[ "ray-finned fish", "cartilaginous fish", "bony fish", "spiny-lobed fish" ]
A
Ray-finned fish include the majority of living fish species. including goldfish, tuna, salmon, perch, and cod. They have a bony endoskeleton and a swim bladder. Their thin fins consist of webs of skin over flexible bony rays, or spines. The fins lack muscle, so their movements are controlled by muscles in the body wall...
sciq
sciq_01_10493
What are formed when crystals precipitate out from a liquid?
[ "diamonds", "additive sedimentary rocks", "gaseous sedimentary rocks", "chemical sedimentary rocks" ]
D
Chemical sedimentary rocks form when crystals precipitate out from a liquid. The mineral halite, also called rock salt, forms this way. You can make halite! Leave a shallow dish of salt water out in the Sun. As the water evaporates, salt crystals form in the dish. There are other chemical sedimentary rocks, like gypsum...
math_qa
mathqa_03_04928
a can do a half of certain work in 70 days and b one third of the same in 35 days . they together will do the whole work in .
[ "88 days", "27 days", "78 days", "60 days" ]
D
"a = 140 days b = 105 days 1 / 140 + 1 / 105 = 7 / 420 = 1 / 60 = > 60 days answer : d"
sciq
sciq_01_05653
What is a hydrocarbon in which there are only single covalent bonds?
[ "fullerene", "proline", "combined", "alkane" ]
D
An alkane is a hydrocarbon in which there are only single covalent bonds. The simplest alkane is methane, with the molecular formula CH 4 . The carbon is the central atom and makes four single covalent bonds to hydrogen atoms.
sciq
sciq_01_02617
What is formed when humid air near the ground cools below its dew point?
[ "fog", "smoke", "steam", "weather" ]
A
Fog ( Figure below ) is a cloud on the ground. Fog forms when humid air near the ground cools below its dew point. Each type of fog forms in a different way.
math_qa
mathqa_03_00225
two trains , each 100 m long , moving in opposite directions , cross other in 10 sec . if one is moving twice as fast the other , then the speed of the faster train is ?
[ "76 km / hr", "66 km / hr", "48 km / hr", "67 km / hr" ]
C
let the speed of the slower train be x m / sec . then , speed of the train = 2 x m / sec . relative speed = ( x + 2 x ) = 3 x m / sec . ( 100 + 100 ) / 10 = 3 x = > x = 20 / 3 . so , speed of the faster train = 40 / 3 = 40 / 3 * 18 / 5 = 48 km / hr . answer : c
sciq
sciq_01_07825
What kind of change causes evolution in population?
[ "allele frequency changes", "morphogenesis frequency changes", "paragenic frequency changes", "transgenic frequency changes" ]
A
Evolution occurs in a population when allele frequencies change over time. What causes allele frequencies to change? That question was answered by Godfrey Hardy and Wilhelm Weinberg in 1908.
openbookqa
obqa_02_01965
A person rescues a small chipmunk and it requires nourishment. The person obtains
[ "cold cuts", "turkey legs", "tree pips", "red sauce" ]
C
a chipmunk eats acorns
math_qa
mathqa_03_04833
a and b began business with rs . 6000 and rs . 4000 after 8 months , a withdraws rs . 1000 and b advances rs . 1000 more . at the end of the year , their profits amounted to rs . 630 find the share of a .
[ "240", "288", "277", "357" ]
D
"( 6 * 8 + 5 * 4 ) : ( 4 * 8 + 5 * 4 ) 17 : 13 17 / 30 * 630 = 357 answer : d"
sciq
sciq_01_09722
When organisms penetrate a rock, they accelerate breakdown by chemical means and what other means?
[ "geological", "ecological", "temperature", "mechanical" ]
D
ARC-Easy
arc_04_00989
Which of these is unique to the process of scientific investigation?
[ "observing an event as it occurs", "discussing results with other experts", "publishing the results on a webpage", "collecting data in an experiment" ]
D
null
math_qa
mathqa_03_02193
if p = 125 × 243 × 16 / 405 , how many digits are in p ?
[ "1", "2", "3", "4" ]
D
p = 125 * 243 * 16 / 405 p = 5 ^ 3 * 3 * 9 ^ 2 * 4 ^ 2 / ( 5 * 9 ^ 2 ) p = 5 ^ 2 * 3 * 4 ^ 2 p = 20 ^ 2 * 3 = 1200 answer d
sciq
sciq_01_00567
How many cycles do cells have?
[ "six", "four", "seven", "two" ]
B
This diagram represents the cell cycle in eukaryotes. The cell cycle depicts the life of an eukaryotic cell. The cell cycle has four phases: the first growth or gap (G 1 ) phase, the synthesis (S) phase, the second growth or gap (G 2 ) phase and the mitotic (M) phase. The M phase includes mitosis and cytokinesis. The c...
medmcqa
medmcqa_05_04753
Oil and grease are sterilised by-(
[ "Hot air oven", "Autoclaving", "Filtration", "Irradiation" ]
A
Ans. is 'a' i.e., Hot air oven
sciq
sciq_01_10659
What is the preferred method for separating late transition metals from their ores?
[ "heating", "hydrometallurgy", "purging", "hydraulics" ]
B
Hydrometallurgy is the preferred method for separating late transition metals from their ores. What types of ligands are most effective in this process?.
openbookqa
obqa_02_02682
As the barometer reading goes lower there is a greater chance of
[ "winning a prize", "sunshine", "a full moon", "getting wet" ]
D
as air pressure decreases , the chance of rain will increase
ARC-Easy
arc_04_01806
What process forms an image in a mirror?
[ "absorbing light", "reflecting light", "refracting light", "transmitting light" ]
B
null
openbookqa
obqa_02_04625
to determine how firm a certain mineral may be a person can:
[ "measure the weight of it", "attempt to leave a mark on it", "crush it to see the inside", "see if it can bounce" ]
B
quartz scratches glass easily
sciq
sciq_01_01043
Metalloids, metals, and nonmetals are all classes of what?
[ "protons", "compounds", "elements", "matter" ]
C
Metalloids are the smallest class of elements. (The other two classes of elements are metals and nonmetals). There are just six metalloids. In addition to silicon, they include boron, germanium, arsenic, antimony, and tellurium. Metalloids fall between metals and nonmetals in the periodic table. They also fall between ...
math_qa
mathqa_03_04576
how many cuboids of length 5 m , width 4 m and height 3 m can be farmed from a cuboid of 16 m length , 10 m width and 12 m height .
[ "32", "28", "36", "40" ]
A
( 16 ã — 10 ã — 12 ) / ( 5 ã — 4 ã — 3 ) = 32 answer is a .
math_qa
mathqa_03_04031
exactly 30 % of the reporters for a certain wire service cover local politics in country x . if 25 % of the reporters who cover politics for the wire service do not cover local politics in country x , what percent of the reporters for the wire service do not cover politics ?
[ "20 %", "42 %", "60 %", "80 %" ]
C
let ' s assume there are 100 reporters - - > 30 reporters cover local politics . now , as 25 % of the reporters who cover all politics do not cover local politics then the rest 75 % of the reporters who cover politics do cover local politics , so if there are x reporters who cover politics then 75 % of them equal to 30...
sciq
sciq_01_00729
What lies between the continental shelf and the abyssal plain?
[ "continental slope", "equator", "continental belt", "successive slope" ]
A
The continental slope lies between the continental shelf and the abyssal plain. It has a steep slope with a sharp drop to the deep ocean floor.
medmcqa
medmcqa_05_04892
The foetal pole with cardiac activity is detected with Transvaginal USG by what stage of gestation?
[ "6 weeks", "8 weeks", "10 weeks", "12 weeks" ]
A
Using transvaginal USG, the gestational sac can usually be seen at 4 weeks, the yolk sac at 5 weeks, and the fetal pole with cardiac activity by 6 weeks. Cardiac activity can be seen simultaneously with the appearance of a fetal pole as a pulsation at the lateral aspect of the yolk sac. Normal embryonic hea rate may be...
medmcqa
medmcqa_05_02609
GCS max score is -
[ "3", "15", "6", "18" ]
B
Ans. is 'b' i.e., 15
math_qa
mathqa_03_00017
the difference between the ages of two persons is 10 years . fifteen years ago , the elder one was twice as old as the younger one . the present age of the elder person is ?
[ "35 yr", "25 yr", "20 yr", "30 yr" ]
A
"let their ages be x years and ( x + 10 ) years then , ( x + 10 ) - 15 = 2 ( x - 15 ) x - 5 = 2 x - 30 x = 25 present age of the elder person = 25 + 10 = 35 years answer is a"
sciq
sciq_01_10378
What type of treatment is being researched that may cure or prevent genetic disorders?
[ "variation therapy", "regulatory therapy", "gene therapy", "preventive therapy" ]
C
There are many genetic disorders that are due to a single gene. What if we could fix this faulty gene? With the development of gene therapy, that may eventually be possible for many types of genetic disorders.
medmcqa
medmcqa_05_03392
Best test to detect pneumoperitoneum is:
[ "Chest X-ray", "X-ray abdomen in supine position", "X-ray abdomen in supine position", "X-ray abdomen in lateral decubitus" ]
D
X-ray abdomen in lateral decubitus
math_qa
mathqa_03_00400
a and b started a business in partnership investing rs . 20000 and rs . 15000 respectively . after 6 months , c joined them with rs . 20000 . whatwill be b ' s share in total profit of rs . 20000 earned at the end of 2 years from the startingof the business ?
[ "s . 5,000", "s . 5,500", "s . 5,700", "s . 6,000" ]
D
a : b : c = ( 20,000 x 24 ) : ( 15,000 x 24 ) : ( 20,000 x 18 ) = 4 : 3 : 3 . b ' s share = rs . 20000 x 3 / 10 = rs . 6,000 . d
math_qa
mathqa_03_00112
what is the next number : 3 , 18 , 258 , __
[ "2928", "3638", "4098", "4418" ]
C
"4 ^ 0 + 2 = 3 4 ^ 2 + 2 = 18 4 ^ 4 + 2 = 258 4 ^ 6 + 2 = 4098 the answer is c ."
sciq
sciq_01_05104
Electric substations have what devices, which use electromagnetic induction to increase or decrease the voltage of the current?
[ "generators", "transformers", "transistors", "tubes" ]
B
Electric substations have several functions. Many substations distribute electricity from a few high-voltage lines to several lower-voltage lines. They have electric transformers, which use electromagnetic induction to change the voltage of the current. Some transformers increase the voltage; others decrease the voltag...
sciq
sciq_01_05874
Pigments are substances that absorb what?
[ "visible light", "artificial light", "synthetic light", "natural light" ]
A
math_qa
mathqa_03_04456
at a small company , 64 percent of the employees are women , and 60 percent of the employees are married . if 2 / 3 of the men are single , what fraction of the women are married ?
[ "5 / 16", "3 / 4", "9 / 20", "7 / 10" ]
B
"lets take total employees are 100 . given that , total women = 64 and total married = 60 . total men = 100 - 64 = 36 and single men = 2 / 3 * 36 = 24 . married men = total men - single men = 36 - 24 = 12 . married women = total married - married men = 60 - 12 = 48 . fraction of women are married = married women / tota...
sciq
sciq_01_04827
Velocity affects what type of energy more than mass does?
[ "kinetic energy", "magnetic energy", "harmonic energy", "mechanical energy" ]
A
This equation for kinetic energy shows that velocity affects kinetic energy more than mass does. For example, if mass doubles, kinetic energy also doubles. But if velocity doubles, kinetic energy increases by a factor of four. That’s because velocity is squared in the equation. You can see for yourself how mass and vel...
openbookqa
obqa_02_02872
Tiny nits may be seen best when using a
[ "vision enhancing aid", "series of mirrors", "toothpick", "glass eye" ]
A
microscope is used to see small things by making them appear bigger
math_qa
mathqa_03_00469
two boats are heading towards each other at constant speeds of 4 miles / hr and 20 miles / hr respectively . they begin at a distance 20 miles from each other . how far are they ( in miles ) one minute before they collide ?
[ "1 / 12", "6 / 15", "1 / 6", "1 / 3" ]
B
"the question asks : how far apart will they be 1 minute = 1 / 60 hours before they collide ? since the combined rate of the boats is 4 + 20 = 25 mph then 1 / 60 hours before they collide they ' ll be rate * time = distance - - > 24 * 1 / 60 = 6 / 15 miles apart . answer : b ."
sciq
sciq_01_08220
Which of the animals digest cellulose with the aid of methanogens?
[ "goats", "apes", "cows", "pigs" ]
C
Stuart Chalmers. Cows digest cellulose with the aid of methanogens . CC BY 2.0.
medmcqa
medmcqa_05_03501
Black gun powder composition ?
[ "Charcoal 60% + Potassium nitrate 20% + sulphur 20%", "Charcoal 25% + Potassium nitrate 70% + sulphur 05%", "Charcoal 15%+ Potassium nitrate 75% + sulphur 10%", "Charcoal 65% + Potassium nitrate 20% + sulphur 15%" ]
C
Ans. is 'c' i.e., Charcoal 15% + Potassium nitrate 75% + sulphur 10% The classical gun powder is known as black powder, consists of charcol (15%), Sulphur (10%), and potassium nitrate (75%). Depending on fineness, the black gun powder is designated as FG, FFG, FFFG. etc. (F = fineness). Pyrodex is another gun powder wi...
openbookqa
obqa_02_03686
chemical reactions cause
[ "dancing", "napping", "fluctuative attributes", "invisibilty" ]
C
chemical reactions cause chemical change
openbookqa
obqa_02_01237
Chemical reactions can be the cause of new formations of which?
[ "Temperatures", "Shapes", "Colors", "Substances" ]
D
chemical reactions cause different substances to form
math_qa
mathqa_03_02828
on a game show , a contestant is given 3 keys , each of which opens exactly one of the 3 identical boxes . the contestant assigns each key to one of the boxes and wins the amount of money contained in any box that is opened by the key assigned to it . the first box contains $ 4 , the second $ 400 , and the third $ 4000...
[ "2 / 6", "1 / 6", "1 / 8", "1 / 3" ]
B
let ' s call the boxes that contain $ 4 , $ 400 , and $ 4000 , respectively , box a , box b , box c . these are opened , respectively , by key a , key b , and key c . we want to know the probability of winning more than $ 4000 . notice that if the distribution of keys is : box a = key b box b = key a box c = key c then...
medmcqa
medmcqa_05_04694
Acute hyponatremia become symptomatic at:
[ "<135 mEq", "<125 mEq", "<120 mEq", "<110 meq" ]
B
Hyponatremia is commonly defined as a serum sodium <135 mmol/L (<135 mEq/L). In patient with hyponatremia that develops over hours, life-threatening seizures and cerebral edema may occur at values as high as 125 mmol/L. In contrast some patients with more chronic hyponatremia that has slowly developed over months to ye...
math_qa
mathqa_03_03047
a man walks at a rate of 10 mph . after every ten miles , he rests for 6 minutes . how much time does he take to walk 40 miles ?
[ "258", "318", "322", "324" ]
A
"to cover 40 miles the man needs ( time ) = ( distance ) / ( rate ) = 40 / 10 = 4 hours = 240 minutes . he will also rest 3 times ( after 10 , 20 , and 30 miles ) , so total resting time = 3 * 6 = 18 minutes . total time = 240 + 18 = 258 minutes . answer : a ."
openbookqa
obqa_02_02625
A large crevasse was carved in the western United States over many
[ "glaciers", "mountains", "rainstorms", "years" ]
D
the Grand Canyon was formed by the Colorado River flowing over long periods of time
openbookqa
obqa_02_01867
What are some of the risks of using fertilizer?
[ "Making potatoes", "Helping food grow", "Fertilizing the crops", "Damaging the planet" ]
D
fertilizers are a source of pollution
sciq
sciq_01_06747
What is the name of the tube that joins the mouth to the digestive and respiratory tracts?
[ "esophagus", "fallopian tube", "pharynx", "larynx" ]
C
Pharyngeal slits : Pharyngeal slits are located in the pharynx. The pharynx is the tube that joins the mouth to the digestive and respiratory tracts.
sciq
sciq_01_11343
Plants can tell the time of day and time of year by sensing and using various wavelengths of what
[ "sunlight", "precipitation", "lunar cycles", "moisture" ]
A
Plant Responses to Light Plants have a number of sophisticated uses for light that go far beyond their ability to photosynthesize low-molecularweight sugars using only carbon dioxide, light, and water. Photomorphogenesis is the growth and development of plants in response to light. It allows plants to optimize their us...
sciq
sciq_01_03122
What organelle contains the genetic material of the cell?
[ "nucleus", "meiosis", "gamete", "fetus" ]
A
The nucleus contains the genetic material of the cell.
ARC-Easy
arc_04_00730
Unequal distribution of the hormone auxin in plants helps to regulate the direction of plant growth. Which of the following is accomplished by plants in regulating the distribution of auxin?
[ "pollination of flowers", "transportation of nutrients", "discouraging predation", "responding to the environment" ]
D
null
math_qa
mathqa_03_01218
the average of 5 numbers id 27 . if one number is excluded , the average becomes 25 . the excluded number is
[ "25", "27", "30", "35" ]
D
solution excluded number = ( 27 x 5 ) - ( 25 x 4 ) = 135 - 100 = 35 . answer d
openbookqa
obqa_02_03451
Which phenomenon is studied about once annually?
[ "planes departing", "cats purring", "geese travelling", "rats flying" ]
C
migration is when animals move to different locations in an annual cycle
sciq
sciq_01_06578
In an electromagnetic wave, what do the crests and troughs represent?
[ "ocean waves", "vibrating fields", "oscillating fields", "particles fields" ]
C
The black line represents the straight path of the light itself. Along this path, there exists an electric field that will reach a maximum positive charge, slowly collapse to zero charge, and then expand to a maximum negative charge. Similarly, there is an changing magnetic field that oscillates from maximum north pole...
sciq
sciq_01_01517
The sternum and 12 pairs of ribs with their costal cartilages make up what?
[ "heart cage", "thoracic cage", "the core", "chest cage" ]
B
Figure 7.32 Thoracic Cage The thoracic cage is formed by the (a) sternum and (b) 12 pairs of ribs with their costal cartilages. The ribs are anchored posteriorly to the 12 thoracic vertebrae. The sternum consists of the manubrium, body, and xiphoid process. The ribs are classified as true ribs (1–7) and false ribs (8–1...
math_qa
mathqa_03_03076
two diesel trains of length 120 m and 280 m are running towards each other on parallel lines at 42 kmph and 30 kmph respectively . in what time will they be clear of each other from the moment they meet ?
[ "10 sec", "30 sec", "40 sec", "20 s" ]
D
d relative speed = ( 42 + 30 ) * 5 / 18 = 4 * 5 = 20 mps . distance covered in passing each other = 120 + 280 = 400 m . the time required = d / s = 400 / 20 = 20 sec .