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openbookqa
obqa_02_03663
Who is in better shape?
[ "a sedentary crowd-worker", "a body builder", "a couch potato", "a fat woman" ]
B
exercise has a positive impact on a human 's health
sciq
sciq_01_06514
Stimuli in the brain, stomach, and small intestine activate or inhibit production of what secretion?
[ "metabolic juice", "digestive juice", "gastric juice", "sweat" ]
C
Gastric Secretion The secretion of gastric juice is controlled by both nerves and hormones. Stimuli in the brain, stomach, and small intestine activate or inhibit gastric juice production. This is why the three phases of gastric secretion are called the cephalic, gastric, and intestinal phases (Figure 23.17). However, ...
math_qa
mathqa_03_00881
the average of 35 numbers is 25 . if each number is multiplied by 5 , find the new average ?
[ "125", "189", "297", "267" ]
A
"sum of the 35 numbers = 35 * 25 = 875 if each number is multiplied by 5 , the sum also gets multiplied by 5 and the average also gets multiplied by 5 . thus , the new average = 25 * 5 = 125 . answer : a"
math_qa
mathqa_03_00507
find 40 % of 320
[ "96", "94", "128", "74" ]
C
"we know that r % of m is equal to r / 100 × m . so , we have 40 % of 320 40 / 100 × 320 = 128 answer : c"
sciq
sciq_01_08259
What substances in a car battery can be melted and recycled?
[ "lead and plastic", "lead and sodium", "steel and sodium", "lead and steel" ]
A
Lead is still widely used in car batteries. In recent years, battery recycling is becoming very common - about 98% of car batteries a recycled today. The used batteries go to a processing plant where they are crushed and placed in a tank. The lead sinks to the bottom and can be separated, melted and used again. Plastic...
ARC-Easy
arc_04_01950
In order to distinguish fact from opinion, conclusions in experiments should be
[ "recorded on a computer.", "presented in bar graphs.", "based on verifiable data.", "organized in a table." ]
C
null
openbookqa
obqa_02_03545
As watering holes dry up more animals will
[ "die", "move in", "join together", "dig wells" ]
A
as available water in an environment decreases , the amount of available food in that environment will decrease
sciq
sciq_01_11415
What does interstellar medium consist of?
[ "the strong force", "thinly spread gas and dust", "gravitational waves", "dark matter" ]
B
Space may seem empty, but actually it contains thinly spread gas and dust, called interstellar medium, that gradually collapses over immense stretches of time and collects into denser clouds of gas and dust. The atoms of gas are mostly hydrogen and are typically about a centimeter apart. The dust is mostly carbon and s...
medmcqa
medmcqa_05_04840
Which of the following typical antipsychotic drug is not available in depot form ?
[ "Haloperidol", "Risperidone", "Olanzapine", "Chlorpromazine" ]
D
Ans. D. ChlorpromazineAntipsychotic drugs with depot preparations are risperidone, poliperidone, halopetidol, fluphenazine, flupenthixol, zuclopenthixol, olannpine, clozapine, imipramine and quetiapine.
ARC-Challenge
arc_04_03065
As a sample of mercury changes state from liquid to solid, the atoms of the sample
[ "move closer together and have less kinetic energy.", "move closer together and have more kinetic energy.", "move farther apart and have less kinetic energy.", "move farther apart and have more kinetic energy." ]
A
null
sciq
sciq_01_00022
Cutting down on the use of chemical fertilizers and preserving wetlands are ways to prevent what "unlivable" regions in bodies of water?
[ "fresh zones", "inhabitable zones", "hostile zones", "dead zones" ]
D
Cutting down on the use of chemical fertilizers is one way to prevent dead zones in bodies of water. Preserving wetlands is also important. Wetlands are habitats such as swamps, marshes, and bogs where the ground is soggy or covered with water much of the year. Wetlands slow down and filter runoff before it reaches bod...
sciq
sciq_01_02915
How is energy expressed when it is released in a chemical reaction?
[ "as negative number", "as a percentage", "as a positive number", "as an equation" ]
A
When energy is released in a chemical reaction or process, that energy is expressed as a negative number. Figure below shows electron affinities in kJ/mol for the main group elements.
openbookqa
obqa_02_02438
Living things which require warmth likely also require
[ "beads", "tea", "presents", "kidneys" ]
D
an animal requires warmth for survival
math_qa
mathqa_03_04858
find unit digit of n when n = 63 ^ 1 ! + 2 ! + . . . + 63 ! + 18 ^ 1 ! + 2 ! + . . . + 18 ! + 37 ^ 1 ! + 2 ! + . . . 37 !
[ "2", "4", "6", "8" ]
D
3,8 and 7 have a power cycle of 4 , i . e . the units digit in each case will repeat after every 4 th power . for eg : 3 ^ 1 = 3 , 3 ^ 2 = 9 , 3 ^ 3 = 27 , 3 ^ 4 = 81 , 3 ^ 5 = 243 all the powers given ( 1 ! + 2 ! + . . . . ) , are multiples of 4 . it is so because the last 2 digits of the total sum will be 00 , for ea...
openbookqa
obqa_02_01949
In a single year, a giant globe will do this to a giant star.
[ "fight", "burn", "circle", "explode" ]
C
the Earth revolves around the sun
openbookqa
obqa_02_00922
How does refraction affect the look of things
[ "They look black", "They appear same", "They just disappear", "They appear different" ]
D
refraction causes something to look different
math_qa
mathqa_03_04950
a train covers a distance of 12 km in 10 min . if it takes 2 sec to pass a telegraph post , then the length of the train is ?
[ "40", "80", "20", "100" ]
A
"speed = ( 12 / 10 * 60 ) km / hr = ( 72 * 5 / 18 ) m / sec = 20 m / sec . length of the train = 20 * 2 = 40 m . answer : option a"
openbookqa
obqa_02_01181
An animal can do some essential things without being taught or ever seeing it done
[ "we are unaware", "that is negative", "that is affirmative", "all of these" ]
C
an animal knows how to do instinctive behaviors when it is born
sciq
sciq_01_07725
Light emitted by atoms is polychromatic—containing more than one of these?
[ "filter", "wavelength", "weight", "gravity" ]
B
Lasers Most light emitted by atoms is polychromatic—containing more than one wavelength. In contrast, lasers (from light amplification by stimulated emission of radiation) emitmonochromatic light— a single wavelength only. Lasers have many applications in fiber-optic telecommunications, the reading and recording of com...
sciq
sciq_01_06605
What makes up 99 percent of air?
[ "dioxide and nitrogen", "nitrogen and oxygen", "phosphorus and oxygen", "oxygen and dioxide" ]
B
Figure below shows the main gases in air. Nitrogen and oxygen make up 99 percent of air. Argon and carbon dioxide make up much of the rest. These percentages are the same just about everywhere in the atmosphere.
math_qa
mathqa_03_04294
gopi gives rs . 90 plus one turban as salary to his servant for one year . the servant leaves after 9 months and receives rs . 65 and the turban . find the price of the turban .
[ "27", "36", "29", "10" ]
D
"let the price of turban be x . thus , for one year the salary = ( 90 + x ) for 9 months he should earn 3434 ( 90 + x ) . now he gets one turban and rs . 65 . thus , 3434 ( 90 + x ) = 65 + x or 270 + 3 x = 260 + 4 x or x = 10 answer : d"
openbookqa
obqa_02_02110
Large fluffy clouds in winter may
[ "sink", "burn", "melt", "precipitate" ]
D
precipitation is when snow fall from clouds to the Earth
medmcqa
medmcqa_05_02784
The shortest diameter of fetal head is:
[ "Biparietal diameter", "Suboccipitofrontal diameter", "Occipitofrontal diameter", "Bitemporal diameter" ]
D
Ans. is d, i.e. Bitemporal diameterRef. Dutta Obs. 9/e. p 11MnemonicRemember Friends: always transverse diameters of the fetal skull are smaller than Anteroposterior diameters.Amongst the given options: Biparietal and bitemporal diameters are transverse diameters, whereas suboccipitofrontal and occipitofrontal are ante...
sciq
sciq_01_01101
Single bonds allow the atoms they join to rotate freely about the what?
[ "bond axis", "nucleus", "atomic orbit", "electron shell" ]
A
sciq
sciq_01_05822
What general property of an earthquake is used to describe its relative strength?
[ "magnitude", "latitude", "resonance", "amplitude" ]
A
Earthquake magnitude affects how much damage is done in an earthquake. A larger earthquake damages more buildings and kills more people than a smaller earthquake. But that's not the only factor that determines earthquake damage. The location of an earthquake relative to a large city is important. More damage is done if...
sciq
sciq_01_03860
Cilia or flagella structures give protists what ability?
[ "movement", "reproduction", "breathing", "eating" ]
A
An animal-like protist, or a protozoa. These protists have the ability to move, usually with some sort of cilia or flagella, and must obtain their energy from other sources. But obviously, they are much simpler than animals.
sciq
sciq_01_03702
Potential differences from various voltage sources are necessary in order to create electrical fields, which result in what flow of charge?
[ "wattage", "output", "voltage", "current" ]
D
20.2 Ohm’s Law: Resistance and Simple Circuits What drives current? We can think of various devices—such as batteries, generators, wall outlets, and so on—which are necessary to maintain a current. All such devices create a potential difference and are loosely referred to as voltage sources. When a voltage source is co...
sciq
sciq_01_05136
Although much of the heart's basic structure is complete by the end of the fifth week, what fetal structures remain until birth or shortly after?
[ "heart shunts", "umbilical arteries", "blood shunts", "renal arteries" ]
C
The five regions of the primitive heart tube develop into recognizable structures in a fully developed heart. The truncus arteriosus will eventually divide and give rise to the ascending aorta and pulmonary trunk. The bulbus cordis develops into the right ventricle. The primitive ventricle forms the left ventricle. The...
ARC-Challenge
arc_04_03000
Four identical candles are set on a safe surface and lit. One is covered with a small-sized jar, one is covered with a large-sized jar, and one candle is left in the open. A fourth lit candle is placed in a vacuum. Which candle will most likely stay lit the longest?
[ "the candle placed in the vacuum", "the candle covered with the small-sized jar", "the candle covered with the large-sized jar", "the candle left out in the open" ]
D
null
math_qa
mathqa_03_01505
150 liters of a mixture of milk and water contains in the ratio 3 : 2 . how much water should now be added so that the ratio of milk and water becomes 3 : 4 ?
[ "90 liters", "20 liters", "50 liters", "20 liters" ]
C
"milk = 3 / 5 * 150 = 90 liters water = 50 liters 90 : ( 50 + p ) = 3 : 4 150 + 3 p = 360 = > p = 70 50 liters of water are to be added for the ratio become 3 : 4 . answer : c"
medmcqa
medmcqa_05_01589
A child is below the third percentile for height. His growth velocity is normal, but chronologic age is more than skeletal age. The most likely diagnosis is
[ "Constitutional delay in growth", "Genetic sho stature", "Primordial dwarfism", "Hypopituitarism" ]
A
sho stature: Defined as height below third centile or more than 2 standard detions below the median height for age and gender according to the population standard. Children whose stature s more than 3 SD below the population mean for age and gender are more likely to be suffering from pathological sho stature as compar...
openbookqa
obqa_02_04276
Aside from plants, lizards also eat bugs for
[ "singing", "crying", "nothing", "sustenance" ]
D
lizards eat insects
medmcqa
medmcqa_05_04688
Late deaths in burns is due to -
[ "Sepsis", "Hypovolemia", "Contractures", "Neurogenic" ]
A
Answer is 'a' i.e. Sepsis "Following successful resucitation, most acute morbidity and viually all moality in severely burned patients are related to infection." - Schwaz This is because thermal injury causes profound immunosuppression that is propoional to the TBSA of the burn. Also know Inspite of the burn patient at...
medmcqa
medmcqa_05_04997
Leiden thrombophilia is caused by mutational deficiency of which of the following factors?
[ "FactorV", "FactorVII", "Factor IX", "FactorX" ]
A
Ref. Robbins Pathology. 9th edition. Page. 135 Factor V Leiden thrombophilia is an inherited disorder of blood clotting. Factor V Leiden is the name of a specific mutation (genetic alteration) that results in thrombophilia, or an increased tendency to form abnormal blood clots in blood vessels. Factor V Leiden is the m...
sciq
sciq_01_06436
What structure supports the body, protects internal organs, produces blood cells, and maintains mineral homeostasis?
[ "skin", "skeleton", "cuticle", "fossil" ]
B
The skeleton supports the body, protects internal organs, produces blood cells, and maintains mineral homeostasis.
math_qa
mathqa_03_01121
pipe a can fill a tank in 4 hours . due to a leak at the bottom , it takes 8 hours for the pipe a to fill the tank . in what time can the leak alone empty the full tank ?
[ "13", "17", "18", "8" ]
D
"let the leak can empty the full tank in x hours 1 / 4 - 1 / x = 1 / 8 = > 1 / x = 1 / 4 - 1 / 8 = ( 2 - 1 ) / 8 = 1 / 8 = > x = 8 . answer : d"
openbookqa
obqa_02_04086
A monkey grabs a banana in order to
[ "build a shelter", "find a mate", "hit enemies", "gain nutrients" ]
D
eating food is used to get nutrients by living things
medmcqa
medmcqa_05_01698
Resistance to ciprofloxacin is due to:
[ "Transduction", "Transformation", "Conjugation", "Mutation" ]
D
Ref: Goodman & Gillman's 13th ed. P 1016* Ciprofloxacin is one of the fluoroquinolones along with norfloxacin, ofloxacin, levofloxacin, spartloxacin, etc.* MOA of quinolones: The quinolone antibiotics target bacterial DNA gyrase and topoisomerase IV.* The quinolones inhibit gyrase-mediated DNA supercoiling at concentra...
math_qa
mathqa_03_00439
a work crew of 4 men takes 5 days to complete one - half of a job . if 11 men are then added to the crew and the men continue to work at the same rate , how many days will it take the enlarged crew to do the rest of the job ?
[ "2", "3", "1 1 / 3", "4" ]
C
"suppose 1 man can do work in x days . . so 4 men will do in . . 4 / x = 1 / 5 * 1 / 2 as half job is done x = 40 now 11 more are added then 15 / 40 = 1 / 2 * 1 / d for remaining half job d = 1 1 / 3 number of days c"
math_qa
mathqa_03_03933
in a mixture of 45 litres the ratio of milk to water is 4 : 1 . additional 11 litres of water is added to the mixture . find the ratio of milk to water in the resulting mixture .
[ "2 / 1", "4 / 1", "2 / 3", "9 / 5" ]
D
"given that milk / water = 4 x / x and 4 x + x = 45 - - > x = 9 . thus milk = 4 x = 36 liters and water = x = 9 liters . new ratio = 36 / ( 9 + 11 ) = 36 / 20 = 9 / 5 . answer : d ."
sciq
sciq_01_09031
What type of energy is useful to humans because it's ease of transport and conversion to other forms of energy?
[ "heat", "physical", "potential", "electrical" ]
D
Electrical energy is useful to us mostly because it is easy to transport and can be easily converted to or from other forms of energy. Of course, conversion involves wast, typically as heat.
sciq
sciq_01_08091
Geiger counters can be used to detect what, in general?
[ "radiation", "seismic load", "convection", "evaporation" ]
A
One reason radiation is dangerous is that it can’t be detected with the senses. You normally can’t see it, smell it, hear it, or feel it. Fortunately, there are devices such as Geiger counters that can detect radiation. A Geiger counter, like the one in Figure below , has a tube that contains atoms of a gas. If radiati...
sciq
sciq_01_11117
Respiration cycles the organic carbon into which gas?
[ "carbon dioxide", "liquid dioxide", "phosphorus dioxide", "oxygen" ]
A
Figure 46.15 Carbon dioxide gas exists in the atmosphere and is dissolved in water. Photosynthesis converts carbon dioxide gas to organic carbon, and respiration cycles the organic carbon back into carbon dioxide gas. Long-term storage of organic carbon occurs when matter from living organisms is buried deep undergroun...
sciq
sciq_01_03912
Compared to thoracic and lumbar types, the cervical type of what structures carry the least amount of body weight?
[ "vertebrae", "nasal", "ametic", "nuclei" ]
A
Cervical Vertebrae Typical cervical vertebrae, such as C4 or C5, have several characteristic features that differentiate them from thoracic or lumbar vertebrae (Figure 7.25). Cervical vertebrae have a small body, reflecting the fact that they carry the least amount of body weight. Cervical vertebrae usually have a bifi...
math_qa
mathqa_03_00752
if m is an integer such that ( - 2 ) ^ 2 m = 2 ^ ( 18 - m ) then m = ?
[ "4", "5", "6", "7" ]
C
"2 m = 18 - m 3 m = 18 m = 6 the answer is c ."
math_qa
mathqa_03_04806
rates for having a manuscript typed at a certain typing service are $ 10 per page for the first time a page is typed and $ 5 per page each time a page is revised . if a certain manuscript has 100 pages , of which 30 were revised only once , 20 were revised twice , and the rest required no revisions , what was the total...
[ "$ 1250", "$ 1350", "$ 1150", "$ 1360" ]
B
"50 pages typed 1 x 30 pages typed 2 x ( original + one revision ) 20 pages typed 3 x ( original + two revisions ) 50 ( 10 ) + 30 ( 10 + 5 ) + 20 ( 10 + 5 + 5 ) = 500 + 450 + 400 = 1350 answer - b"
ARC-Challenge
arc_04_03165
What occurs if the body's renal system fails to work?
[ "Gas exchange is impaired.", "Blood oxygenation no longer occurs.", "Metabolic waste builds up in the blood.", "Nutrients are no longer transported to organs." ]
C
null
medmcqa
medmcqa_05_01830
Which of the following is absorbed in the colon ?
[ "Iron", "Proteins", "Bile salts", "Electrolytes" ]
D
D i.e. Electrolytes- Maximum absorption or reabsorption of water from gastrointestinal tract occurs in jejunumQ.- Ca2+, Cl-, Fe2+, SO42-, long chain fatty acids and vitamins (except B12)are mainly absorbed in upper small intestine (i.e., jejunum & duodenum)Q.- Sodium (Na+) is mainly absorbed is upper & lower small inte...
openbookqa
obqa_02_03232
By finding the distance of something you are
[ "totally clueless", "gathering data", "playing around", "wasting time" ]
B
An example of collecting data is measuring
ARC-Challenge
arc_04_02899
Which structure of a bird is correctly paired with its function?
[ "claws for obtaining food", "wings for eliminating waste", "feathers for breathing", "eyes for growing" ]
A
null
medmcqa
medmcqa_05_02264
Treatment of choice for perforation in pars flaccida of the tympanic membrane with cholesteatoma is:
[ "Myringoplasty", "Modified radical mastoidectomy", "Antibiotics", "Radical mastoidectomy" ]
B
(b) Modified radical mastoidectomy(Ref. Cummings, 6th ed., 2145)Since reconstruction of hearing is not done in radical mastoidectomy, so MRM is preferred over radical mastoidectomy in the treatment of unsafe CSOM to give the patient a hearing ear besides making the ear safe and dry
sciq
sciq_01_05867
What happens to the core of a star when it begins to run low on hydrogen?
[ "it disappears", "it explodes", "it expands", "it contracts" ]
D
series of stages a sexually reproducing organism goes through from one generation to the next.
openbookqa
obqa_02_03811
Sticky balls from a plant can grow a new plant miles from the original because
[ "a bear unknowingly transported it", "they bounced when they fell", "they were transported by ants", "they were carried there by a pterosaur" ]
A
if seeds stick to the fur of an animal then that seed will be transported by the animal
openbookqa
obqa_02_03323
Animals need to get ready for the changing seasons in various ways. One way bears get ready for the Winter is by having their
[ "ears fall off", "fur get thinner", "fur get thicker", "nose get blue" ]
C
An example of a seasonal change is an animal growing thick fur for keeping warm in the winter
sciq
sciq_01_03818
What is mass number?
[ "the total number of protons and chondrichthyes in a nucleus", "to total number of electrons and neutrons in a nucleus", "to total number of protons and electrons in a nucleus", "the total number of protons and neutrons in a nucleus" ]
D
All oxygen atoms have eight protons, and most have eight neutrons as well. What is the mass number of an oxygen isotope that has nine neutrons? What is the name of this isotope?.
sciq
sciq_01_07234
In eukaryotic cells, where is the dna kept?
[ "nucleus", "mitochondria", "cytoplasm", "epidermis" ]
A
In eukaryotic cells, the DNA is kept in the nucleus. The nucleus is surrounded by a double membrane called the nuclear envelope. Within the nucleus is the nucleolus.
sciq
sciq_01_04563
What has increased the greenhouse effect?
[ "climate change", "ozone depletion", "temperature changes", "human actions" ]
D
Greenhouse gases in the atmosphere absorb heat. This is called the greenhouse effect and it makes the planet warmer. Human actions have increased the greenhouse effect.
openbookqa
obqa_02_03183
Where is the best place to shoot animals?
[ "national park", "sky", "sea", "forest" ]
D
national parks limit hunting
math_qa
mathqa_03_03170
among all sales staff at listco corporation , college graduates and those without college degrees are equally represented . each sales staff member is either a level - 1 or level - 2 employee . level - 1 college graduates account for 15 % of listco ' s sales staff . listco employs 60 level - 1 employees , 30 of whom ar...
[ "46", "42", "56", "70" ]
D
i ' m going in on this one . so let ' s say that we have the following so we know that l 1 = 60 and that c and l 1 = 0.15 x , we should set up a double set matrix btw but anyways , i ' m just explaining the point with this problem . now we are told that 0.15 x = 30 , therefore the grand total is 200 . now we know that ...
sciq
sciq_01_09094
Some earthworms can also reproduce asexually by fragmentation followed by what?
[ "digestion", "fertilization", "germination", "regeneration" ]
D
math_qa
mathqa_03_00179
a shop owner sells 25 mtr of cloth and gains sp of 10 mtrs . find the gain % ?
[ "30 %", "40 %", "50 %", "66.67 %" ]
D
"here , selling price of 10 m cloth is obtained as profit . profit of 10 m cloth = ( s . p . of 25 m cloth ) – ( c . p . of 25 m cloth ) selling price of 15 m cloth = selling price of 25 m of cloth let cost of each metre be rs . 100 . therefore , cost price of 15 m cloth = rs . 1500 and s . p . of 15 m cloth = rs . rs ...
medmcqa
medmcqa_05_03873
Sympathetic cholinergic transmission is seen in -
[ "Sweat glands", "Renal vessels", "GT vessels", "Heart" ]
A
Ans. is 'a' i.e., Sweat glandso Neurotransmitter in all preganglionic autonomic nerves (both sympathetic and parasympathetic) is acetylcholine (ACH).o Neurotransmitter in all ganglia (both sympathetic and parasympathetic) is acetylcholine. o Neurotransmitter in postganglionic parasympathetic fibres is acetylcholine.o I...
openbookqa
obqa_02_02576
Which is more accurate:
[ "sharks use gills to swim underwater for longer than humans can", "humans use gills to extract carbon from the water", "sharks use gills to extract carbon from the water", "sharks are unable to find oxygen while underwater" ]
A
gills are used for breathing water by aquatic animals
sciq
sciq_01_03657
Trichomoniasis is cause by what type of pathogen?
[ "protozoa", "worm", "virus", "bacteria" ]
A
STIs may be caused by several different types of pathogens, including protozoa, insects, bacteria, and viruses. For example: Protozoa cause an STI called trichomoniasis. The pathogen infects the vagina in females and the urethra in males, causing symptoms such as burning and itching. Trichomoniasis is common in young p...
math_qa
mathqa_03_00495
the average ( arithmetic mean ) of the 5 positive integers k , m , r , s , and t is 12 , and k < m < r < s < t . if t is 20 , what is the greatest possible value of the median of the 5 integers ?
[ "16", "18", "19", "20" ]
D
"we need to find the median which is the third value when the numbers are in increasing order . since k < m < r < s < t , the median would be r . the average of the positive integers is 12 which means that in effect , all numbers are equal to 12 . if the largest number is 20 , it is 8 more than 12 . we need r to be max...
sciq
sciq_01_01520
What is the term for a dynamic equilibrium that is maintained in body tissues and organs?
[ "metabolism", "dormancy", "homogeneity", "homeostasis" ]
D
33.3 Homeostasis Homeostasis is a dynamic equilibrium that is maintained in body tissues and organs. It is dynamic because it is constantly adjusting to the changes that the systems encounter. It is in equilibrium because body functions are kept within a normal range, with some fluctuations around a set point for the p...
openbookqa
obqa_02_03085
What are you unlikely to find in a canyon?
[ "granite", "sandstone", "squid", "limestone" ]
C
a canyon is made of rocks
math_qa
mathqa_03_02846
a rectangle having length 100 cm and width 40 cm . if the length of the rectangle is increased by fifty percent then how much percent the breadth should be decreased so as to maintain the same area .
[ "25 %", "33.33 %", "40 %", "75 %" ]
B
"explanation : solution : ( 50 / ( 100 + 50 ) * 100 ) % = 33.33 % answer : b"
sciq
sciq_01_11393
What is the leading cause of soil erosion?
[ "tidal winds", "volcanic explosions", "running water", "glacier movement" ]
C
The same agents that erode landscapes also erode soil. They are water, wind, ice, or gravity. Running water is the leading cause of soil erosion. Water is abundant and has a lot of power. Wind is also a leading cause of soil erosion. Wind can pick up soil and blow it far away.
ARC-Easy
arc_04_00582
A student mixed baking soda with vinegar and observed that the reaction was endothermic. When is a reaction endothermic?
[ "when it is reversible", "when it can be repeated", "when it requires heat to make it happen", "when energy is released by the process" ]
C
null
openbookqa
obqa_02_02160
A skunk wards off predators with
[ "a noxious spray", "bad taste", "a powerful nose", "smelling good" ]
A
most animals avoid bad odors
medmcqa
medmcqa_05_01952
A 49-year-old man has his serum lipids measured. Which pattern suggests the lowest risk for CAD?
[ "total cholesterol 215 mg/dL, high-density lipoprotein (HDL) cholesterol 28 mg/dL", "total cholesterol 215 mg/dL, HDL cholesterol 43 mg/dL", "total cholesterol 180 mg/dL, HDL cholesterol 29 mg/dL", "total cholesterol 202 mg/dL, HDL cholesterol 45 mg/dL" ]
D
This combination, although the total cholesterol is borderline, has high HDL cholesterol, which is protective. Nevertheless, a level this high would likely require treatment.
ARC-Easy
arc_04_00911
Sandra puts some pill bugs into an open box. She covers half the box with a piece of cardboard. She then places the box outside on a summer day, and all the pill bugs move under the cardboard. The pill bugs are most likely responding to which of the following?
[ "air pressure", "bright light", "wind", "fog" ]
B
null
sciq
sciq_01_00873
Light reactions also release oxygen gas as a what?
[ "strange process", "formal process", "detritus product", "waste product" ]
D
The light reactions also release oxygen gas as a waste product.
medmcqa
medmcqa_05_04392
A 9 yr old child is restless. He is hyperactive and his teacher complains that he does not listen to the teachings. Disturbs other students he also shows less interest in playing. The likely diagnosis is:
[ "Cerebral palsy", "Attention deficit hyperkinetic child", "Delirium", "Mania" ]
B
B i.e. Attention deficit hyperkinetic child For ruling out delirium : look for Acute onset, clouding of consciousness with disorientationQfin time > place > person) For ruling out mania : look for An abnormally & persistently elevated, expansive or irritable mood (atleast 1 week or hospitalization is needed) with infla...
medmcqa
medmcqa_05_03625
Best vehicle for oxygen is
[ "Hb solution", "Whole blood", "Plasma", "Dissolved" ]
A
97% of oxygen in blood combines with Hb and presence of Hb increases the oxygen carrying capacity of blood 70 fold.3% of blood os transpoed in dissolved form.ie 100 ml of pure blood contains 0.3ml of oxygen dissolved in plasma.Ref: Textbook of medical physiology by N Geetha, 2nd edition, page no. 241,242
openbookqa
obqa_02_04798
Quartz are in
[ "affection", "hollow spaces", "love", "spices" ]
B
a quartz is made of six-sided transparent crystals
sciq
sciq_01_08476
Light is scattered from what in our atmosphere?
[ "particles", "molecules", "matter", "ions" ]
B
Light is scattered from the molecules in our atmosphere.
sciq
sciq_01_06766
What is the term for the rate at which velocity changes?
[ "transmission", "stability", "compression", "acceleration" ]
D
Acceleration is a measure of the change in velocity of a moving object. It measures the rate at which velocity changes. Velocity, in turn, is a measure of the speed and direction of motion, so a change in velocity may reflect a change in speed, a change in direction, or both. Both velocity and acceleration are vectors....
math_qa
mathqa_03_03605
a certain lab experiments with white and brown mice only . in one experiment , 4 / 9 of the mice are brown . if there are 20 brown mice in the experiment , how many mice in total are in the experiment ?
[ "32", "26", "36", "28" ]
C
"let total number of mice = m number of brown mice = 4 / 9 m number of white mice = 5 / 9 m = 20 = > m = 36 answer c"
ARC-Challenge
arc_04_02660
Mrs. Tucker gives her class samples of different soil types. Which action best helps Tanisha identify each soil type?
[ "smelling it", "touching it", "weighing it", "measuring it" ]
B
null
math_qa
mathqa_03_03022
a property decreases in value every year at the rate of 6 1 / 4 % of its value at the beginning of the year its value at the end of 3 years was rs . 21093 . find its value at the beginning of the first year ?
[ "25600.24", "25600.27", "25600.28", "25600.21" ]
A
6 1 / 4 % = 1 / 16 x * 15 / 16 * 15 / 16 * 15 / 16 = 21093 x = 25600.24 answer : a
medmcqa
medmcqa_05_01966
In open Angle Glaucoma which investigation is least useful
[ "Indirect opthalmoscopy", "Tonometry", "Direct opthalmoscopy", "Perimetry" ]
A
A i.e. Indirect ophthalmoscopy Baseline Evaluation in PAOG before initiation of therapy includes Visual Acuity Slitlamp biomicroscopy to rule out any signs of secondary glaucomas Applanation Tonometry to measure the IOP (> 21 mm Hg) Gonioscopy to assess the angle (an open angle of normal appearance) Ophthalmoscopy to a...
sciq
sciq_01_08549
What is a form of matter that has a definite volume, but an indefinite shape?
[ "a gas", "a liquid", "a solid", "a plasma" ]
B
A liquid is a form of matter that has a definite volume, but an indefinite shape. As water is poured from one container into another, it adopts the shape of its new container. However, the volume of the water does not change, because the water molecules are still relatively close to one another in the liquid state. Unl...
ARC-Easy
arc_04_00652
Electricity to play your radio can be made using renewable or nonrenewable resources. Which of the following resources are renewable?
[ "wind and oil", "wind and sunlight", "natural gas and oil", "natural gas and coal" ]
B
null
sciq
sciq_01_06184
In what type of process does heat flow into its surroundings and cause an increase in kinetic energy?
[ "chemical process", "biochemical process", "oscillating process", "exothermic process" ]
D
In general, the process of interest is taking place in the system, and there are no changes in the composition of the surroundings. However, the temperature of the surroundings does generally change. Entropy changes in the surroundings are determined primarily by the flow of heat into or out of the system. In an exothe...
sciq
sciq_01_09185
What branch of biology studies animal behavior?
[ "geology", "microbiology", "embryology", "ethology" ]
D
The branch of biology that studies animal behavior is called ethology . Ethologists usually study how animals behave in their natural environment, rather than in a lab. They generally try to answer four basic questions about the behaviors they observe:.
math_qa
mathqa_03_01096
what is 5 + 7
[ "2", "4", "10", "12" ]
D
d
sciq
sciq_01_01825
Potassium is a soft, silvery metal that ignites explosively in what?
[ "water", "air", "acid", "cold" ]
A
Potassium is a soft, silvery metal that ignites explosively in water. It easily loses its one valence electron to form positive potassium ions (K + ), which are needed by all living cells. Potassium is so important for plants that it is found in almost all fertilizers, like the one shown here. Potassium is abundant in ...
sciq
sciq_01_04603
What is the most common type of cancer in adult females?
[ "skin", "lung", "breast", "bone" ]
C
The most common type of cancer in adult females is cancer of the breast. About one third of all cancers in women are breast cancers.
medmcqa
medmcqa_05_02876
The commonest cause of paraplegia is-
[ "Tuberculosis", "Trauma", "Secondaries", "Transverse myelitis" ]
B
Ans-B
openbookqa
obqa_02_01950
The more active an animal is
[ "their water level will stay steady", "the less H2O they need to stay hydrated", "the more H20 they should take in", "the less likely they are to sweat or pant" ]
C
as the activity of an animal increases , the amount of water in an animal 's body in that environment will decrease
sciq
sciq_01_08587
Which group of the periodic table consists of hydrogen and the alkali metals?
[ "group 3", "group 1", "group 2", "group 4" ]
B
Group 1 of the periodic table consists of hydrogen and the alkali metals. Hydrogen is a very reactive nonmetal. The alkali metals are the most reactive metals.
sciq
sciq_01_02235
What are the basic building blocks of the human body?
[ "cells", "minerals", "vitamins", "proteins" ]
A
The basic building blocks of the human body are cells. Human cells are organized into tissues, tissues are organized into organs, and organs are organized into organ systems.
openbookqa
obqa_02_03447
a desert environment has low
[ "sand count", "cacti", "dryness", "wet sky falling" ]
D
a desert environment has low rainfall
math_qa
mathqa_03_03487
if d = 1 / ( 2 ^ 3 * 5 ^ 11 ) is expressed as a terminating decimal , how many nonzero digits will d have ?
[ "one", "two", "three", "seven" ]
C
"another way to do it is : we know x ^ a * y ^ a = ( x * y ) ^ a given = 1 / ( 2 ^ 3 * 5 ^ 11 ) = multiply and divide by 2 ^ 8 = 2 ^ 8 / ( 2 ^ 3 * 2 ^ 8 * 5 ^ 11 ) = 2 ^ 8 / 10 ^ 11 = > non zero digits are 256 = > ans c"
math_qa
mathqa_03_04164
a certain bacteria colony doubles in size every day for 21 days , at which point it reaches the limit of its habitat and can no longer grow . if two bacteria colonies start growing simultaneously , how many days will it take them to reach the habitat ’ s limit ?
[ "6.33", "7.5", "20", "15" ]
C
"if there is one bacteria colony , then it will reach the limit of its habitat in 21 days . if there are two bacteria colonies , then in order to reach the limit of habitat they would need to double one time less than in case with one colony . thus colonies need to double 20 times . answer : c . similar questions to pr...
ARC-Easy
arc_04_02074
Which adaptive feature most helps a baby jaguar survive the first few weeks of life?
[ "the ability to roar", "the ability to hunt", "a diet of land mammals", "being born during spring months" ]
D
null
ARC-Challenge
arc_04_02700
In plants, which describes sexual reproduction but not asexual reproduction?
[ "Five limbs are grafted onto the same tree.", "New plants are grown from pieces of other plants.", "A fertilized egg cell divides to produce an embryo.", "Offspring are produced that have the same genetic information as the parent." ]
C
null
sciq
sciq_01_01655
Mutualism is a symbiotic relationship that has what effect on both species involved?
[ "destructive", "disadvantageous", "harmful", "beneficial" ]
D
Mutualism is a symbiotic relationship in which both species benefit.