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7.76k
ARC-Easy
arc_04_00981
Which is a process that converts sunlight energy into a compound that stores chemical energy?
[ "phototropism", "photosynthesis", "respiration", "pollination" ]
B
null
medmcqa
medmcqa_05_03333
A post partial gastrectomy patient presents with neurological symptoms. Most probable diagnosis is:
[ "Folic acid deficiency", "Thiame deficiency", "Vitamin B12 de fid ency", "Iron deficiency" ]
C
Ref: Bailey unci Love's Short Practice of Surgery 25th EditionExplanation:Postoperative complications of gastrectomyLeakage of the oesophagojejunostomy.Leakage from the duodenal stumpParaduodenal collectionsBiliary peritonitisThe presence of septic collections along with a very radical vascular dissection may lead to c...
sciq
sciq_01_06092
What kind of reproduction requires the fusion of male and female gametes?
[ "autonomous reproduction", "asexual reproduction", "sexual reproduction", "subject reproduction" ]
C
math_qa
mathqa_03_00312
in a coconut grove , ( x + 3 ) trees yield 60 nuts per year , x trees yield 120 nuts per year and ( x – 3 ) trees yield 180 nuts per year . if the average yield per year per tree be 100 , find x .
[ "3", "4", "5", "6" ]
D
"( x + 3 ) × 60 + x × 120 + ( x − 3 ) × 180 / ( x + 3 ) + x + ( x − 3 ) = 100 ⇒ 360 x − 360 / 3 x = 100 ⇒ 60 x = 360 ⇒ x = 6 answer d"
openbookqa
obqa_02_02004
Rain and what cause erosion?
[ "wind vanes", "sunlight", "concrete", "drafts" ]
D
wind and rain cause erosion
ARC-Easy
arc_04_01673
A student is measuring a liquid in a graduated cylinder. The student is not tall enough to read the measurement at eye level. Which of these is the best action for the student to take to read the measurement correctly?
[ "stand on a chair", "estimate the amount", "pour out some of the liquid until it is at eye level", "move the graduated cylinder to a lower table" ]
D
null
sciq
sciq_01_07097
Gated ion channels have a central role in what system's function?
[ "nervous", "generous", "endocrine", "skeletal" ]
A
sciq
sciq_01_02591
What element is the most common element in the universe?
[ "helium", "nitrogen", "hydrogen", "carbon" ]
C
An element is a pure substance. It cannot be separated into any other substances. There are more than 90 different elements that occur in nature. Some are much more common than others. Hydrogen is the most common element in the universe. Oxygen is the most common element in Earth’s crust. Figure below shows other examp...
openbookqa
obqa_02_04031
a retailer gets an order of aluminum delivered weekly. Where is the aluminum likely coming from?
[ "it is coming from a school", "it is coming from a mystery place", "it is coming from santa claus", "it is coming from a merchant" ]
D
a source of something supplies that something
sciq
sciq_01_09587
Do placental mammals give birth to relatively small or large fetuses?
[ "they don't give birth", "large", "neither", "small" ]
B
Placental mammals give birth to a relatively large and mature fetus. This is possible because they have a placenta to nourish the fetus and protect it from the mother’s immune system. This allows for a long period of growth and development before birth.
sciq
sciq_01_06745
What is the property by which water molecules stick together?
[ "tension", "vitality", "cohesion", "plasticity" ]
C
Water has some unusual properties due to its hydrogen bonds. One property is cohesion , the tendency for water molecules to stick together. The cohesive forces between water molecules are responsible for the phenomenon known as surface tension . The molecules at the surface do not have other like molecules on all sides...
sciq
sciq_01_03857
Where is the hypothalamus–pituitary complex located in the body?
[ "diencephalon of the brain", "tribulus of the brain", "subthalamic of the brain", "stem of the brain" ]
A
17.3 The Pituitary Gland and Hypothalamus The hypothalamus–pituitary complex is located in the diencephalon of the brain. The hypothalamus and the pituitary gland are connected by a structure called the infundibulum, which contains vasculature and nerve axons. The pituitary gland is divided into two distinct structures...
sciq
sciq_01_00315
Populations of viruses do not grow through cell division because they?
[ "Static", "non living", "are not cells", "Acidic" ]
C
Populations of viruses do not grow through cell division because they are not cells. Instead, they use the machinery and metabolism of a host cell to produce new copies of themselves. After infecting a host cell, a virion uses the cell’s ribosomes, enzymes, ATP, and other components to replicate. Viruses vary in how th...
openbookqa
obqa_02_04418
Which would least refract light?
[ "a cardboard box", "a bottle", "a gem", "a diamond" ]
A
objects made of glass cause refraction of light
medmcqa
medmcqa_05_02514
Phantogeusia is
[ "Perception of pain in absence of any recognized stimuli", "Impairment of the sense of taste", "Painful tongue", "Painful pyrosis in absence of any recognized stimuli" ]
A
Taste Dysfunctions 1. Ageusia: Complete loss of all taste stimuli 2. Hypogeusia: Impairment of the sense of taste or decreased sensitivity for all taste stimuli 3. Dysgeusia or parageusia: A distortion or perversion in the perception of a taste 4. Phantogeusia or gustatory hallucination: Perception of a taste in the ab...
openbookqa
obqa_02_02587
Sliding off concrete and onto gravel produces higher levels of
[ "shine", "value", "longevity", "chafing" ]
D
as roughness of a surface increases , friction will increase
sciq
sciq_01_07025
What part of a person with myopia is longer than normal?
[ "leg", "arm", "neck", "eye" ]
D
The eye of a person with myopia is longer than normal. As a result, images are focused in front of the retina ( top left ). A concave lens is used to correct myopia to help focus images on the retina ( top right ). Farsightedness, or hyperopia, occurs when objects are focused in back of the retina ( bottom left ). It i...
ARC-Challenge
arc_04_02266
A teacher mixes a small amount of salt in a glass of warm water and asks the students to observe physical changes that occur as the salt dissolves. Which physical change will they most likely observe?
[ "The solution will become clear.", "The salt will form bubbles.", "The solution will increase in temperature.", "The water will evaporate." ]
A
null
openbookqa
obqa_02_01142
Fossil fuels
[ "are a renewable resource", "have an unending supply", "can last for eons in the future", "are a dwindling commodity" ]
D
fossil fuels are a nonrenewable resource
openbookqa
obqa_02_04295
Which is likely to have a means to transport water from the dirt to the rest of its body?
[ "the cows that humans eat", "the crickets that owls eat", "the roses a panda eats", "the chicken that cats eat" ]
C
a plant stem is the vehicle for transporting water and food from roots to the rest of the plant
sciq
sciq_01_06232
What type of electricity is formed when a negative charge builds up and are transferred?
[ "neutron energy", "alternating current", "direct current", "static electricity" ]
D
Static electricity is a buildup of electric charges on objects. Charges build up when negative electrons are transferred from one object to another. The object that gives up electrons becomes positively charged, and the object that accepts the electrons becomes negatively charged. This can happen in several ways.
openbookqa
obqa_02_03424
Worms die off during a heat wave. What affect does this have on the local fauna?
[ "Worms are glad their rivals have died off before them", "The dirt is cleaner than ever", "Monkeys can find more bananas", "Flying creatures have more trouble finding food" ]
D
loss of resources has a negative impact on the organisms in an area
medmcqa
medmcqa_05_00693
Results of a test were given as very satisfied, satisfied, dissatisfied, it represents -
[ "Nominal scale", "Ordinal scale", "Interval scale", "Ratio scale" ]
B
In this question, data has been placed into categories, i.e. very satisfied, satisfied and dissatisfied. So, an ordinal scale should be used.
medmcqa
medmcqa_05_04421
Which type of vaccine is MMR?
[ "Live attenuated", "Killed", "Toxoid", "Subunit" ]
A
ANSWER: (A) Live attenuatedREF: APPENDIX-46 below for "TYPES OF VACCINE"Live vaccines can me memorized as "BOMBEY-VT"; BCG, OPV (sabin), MMR (mumps, measles & rubella), Bubonic plague, epidemic typhus, yellow'- fever (17D), vaccinia,Oral Typhoid vaccine (Ty21a) APPENDIX - 46Types of VaccineTypeContentExamplesKilled vac...
ARC-Easy
arc_04_00053
If its food supply in a field decreases, the mouse population in that field will probably
[ "increase.", "decrease.", "remain the same.", "become extinct." ]
B
null
openbookqa
obqa_02_02209
An ivory page will be able to
[ "feed a family", "make some money", "reflect all light", "eat a cookie" ]
C
a white object reflects all visible light
sciq
sciq_01_00744
What is the process where scientific articles are checked and analyzed by other scientists before publication?
[ "process review", "embrace review", "peer review", "mechanism review" ]
C
Scientists may publish articles about their research in peer-reviewed science journals. Peer review means that the work is analyzed by peers, in other words, by other scientists. The articles are published only if the other scientists are convinced that the research is accurate and honest.
math_qa
mathqa_03_02495
10 % of a number is more than 20 % of 650 by 190 . find the number ?
[ "288", "3200", "800", "267" ]
B
"( 10 / 100 ) * x â € “ ( 20 / 100 ) * 650 = 190 1 / 10 x = 320 x = 3200 answer : b"
ARC-Challenge
arc_04_02847
When is wood a nonrenewable resource?
[ "When more trees are harvested than are replanted.", "When trees are harvested and replanted at the same rate.", "When trees are used as an energy resource.", "When trees are used as a material resource." ]
A
null
sciq
sciq_01_05069
What secretion initiates chemical digestion while also protecting the oral cavity?
[ "stomach acid", "saliva", "mucus", "lymph" ]
B
openbookqa
obqa_02_04050
Alligators have a
[ "carrot", "glasses", "scarf", "wide nose" ]
D
alligators eat fish
medmcqa
medmcqa_05_04418
A patient with hypeension is also having aoic dissection. Anti-hypeensive agent of choice is: September 2008
[ "Sodium nitroprusside", "Reserpine", "Pindolol", "Nifedipine" ]
A
Ans. A: Sodium Nitroprusside Antihypeensive therapy in acute aoic dissection aims specifically to lessen pulsatile load or aoic stress, in order to retard the propagation of the dissection and prevent aoic rupture. The goals of treatment are to prevent myocardial ischemia, decrease left ventricular afterload, decrease ...
sciq
sciq_01_02010
Mutualism is a symbiotic relationship in which both species do what?
[ "die", "benefit", "suffer", "reproduce" ]
B
Mutualism is a symbiotic relationship in which both species benefit. An example of mutualism is pictured in Figure below . The clownfish in the photo is hiding among the tentacles of a sea anemone. The tentacles have stingers that can inject poison in the anemone’s prey. The clownfish is protected from the stingers by ...
medmcqa
medmcqa_05_03036
In a patient of nephritic syndrome with spontaneous bacterial peritonitis, which one of the following micro-organisms is most commonly involved?
[ "Proteus", "Escherichia", "Pneumococcus", "Staphylococcus" ]
B
Spontaneous bacterial peritonitismeans peritonitis without any apparent source of contamination. Enteric gram-negative organismE. coli most commonly encountered but sometime gram-positive organism such as streptococci and enterococci also responsible.
math_qa
mathqa_03_00828
andrew travelling to 7 cities . gasoline prices varied from city to city . $ 1.75 , $ 1.61 , $ 1.79 , $ 2.11 , $ 1.96 , $ 2.09 , $ 1.86 . what is the median gasoline price ?
[ "$ 1", "$ 1.86", "$ 1.92", "$ 2.13" ]
B
"ordering the data from least to greatest , we get : $ 1.61 , $ 1.75 , $ 1.79 , $ 1.86 , $ 1.96 , $ 2.09 , $ 2.11 the median gasoline price is $ 1.86 . ( there were 3 states with higher gasoline prices and 3 with lower prices . ) b"
math_qa
mathqa_03_04782
an internet recently hired 8 new network , in addvertisement 20 network already employed . all new network cam from university a . in addition 75 % of computer addvertisement came from same university a . what fraction of original 20 network addvertisement came from same univerity a ? pls help to solve
[ "13 / 20", "15 / 20", "14 / 20", "12 / 20" ]
A
new networks = 8 already employed networks = 20 total networks = 28 computer advt . from uni . a = 28 * ( 75 / 100 ) = 21 out 28 networks 21 came from uni . a among these 21 we know 8 are newly hired so 21 - 8 = 13 networks among previously employed networks came from uni . a answer is : 13 / 20 answer : a
math_qa
mathqa_03_03851
the speed at which a man can row a boat in still water is 6 km / hr . if he rows downstream , where the speed of current is 3 km / hr , how many seconds will he take to cover 110 meters ?
[ "40", "44", "48", "52" ]
B
"the speed of the boat downstream = 6 + 3 = 9 km / hr 9 km / hr * 5 / 18 = 2.5 m / s the time taken to cover 110 meters = 110 / 2.5 = 44 seconds . the answer is b ."
medmcqa
medmcqa_05_01500
Which of the following is not found in meningococci
[ "Capsule", "Lipopolysacchride", "Plasmid", "Pili" ]
C
Plasmid
sciq
sciq_01_04121
What branch of biology focuses on heredity?
[ "genetics", "cell biology", "zoology", "botany" ]
A
When zinc reacts with hydrochloric acid, the reaction bubbles vigorously as hydrogen gas is produced. The production of a gas is also an indication that a chemical reaction is occurring.
math_qa
mathqa_03_02340
if g is to be chosen at random from the set { 5,8 , 7,1 } and k is to be chosen at random from the set { 14 , 8,3 } , what is the probability that gk will be even ?
[ "1", "5", "8", "4" ]
A
method - 1 gk will be even when 1 ) g is even and k is odd , probability of g even is ( 1 / 4 ) and probability of k odd is ( 1 / 3 ) , so probability of case ( 1 ) = ( 1 / 4 ) * ( 1 / 3 ) = ( 1 / 12 ) 2 ) g is odd and k is even , probability of g odd is ( 3 / 4 ) and probability of k even is ( 2 / 3 ) , so probability...
openbookqa
obqa_02_02444
Which is true?
[ "the moon is a source of light with powerful nuclear reactions", "the sun is a source of evil with powerful nuclear reactions", "the sun is a source of light with weak, low-temperature reactions", "the sun is a source of light with powerful nuclear reactions" ]
D
a star is a source of light through nuclear reactions
medmcqa
medmcqa_05_02815
Best method to compare vital statistics of two populations -
[ "Crude death rate", "Age specific death rate", "Age Standardized death rate", "Multivariatie mortality rate" ]
C
Ans. is 'c' i.e., Age standardize death rate o Standardization (or adjustment) of rates is used to unable the valid comparison of groups that differ regarding an important health determinant (most commonly age).o Age adjustment or age standardization removes the confounding effect of different age structures of two dif...
medmcqa
medmcqa_05_02578
CO acts by inhibiting which component of respiratory chain
[ "Cytochrome B", "Cytochrome C oxidase", "NADH CoQ reductase", "Oxidative phosphorylation" ]
B
Carbon monoxide is toxic for mitochondria in man, altering the mitochondrial respiratory chain at the cytochrome c oxidase level. This inhibition in cytochrome c oxidase may play a role in the development of the symptoms observed in acute CO poisoning, and in some diseases related to smoking
sciq
sciq_01_07783
Volcanoes are termed active, dormant, or extinct depending on the possibility of the presence of what in chamber structures?
[ "coal", "magma", "sulpher", "water" ]
B
Volcanoes may be active, dormant, or extinct. This depends on whether there is the possibility of magma in their magma chambers.
math_qa
mathqa_03_04148
the sector of a circle has radius of 7 cm and central angle 135 o . find its perimeter ?
[ "91.5 cm", "92.2 cm", "28.9 cm", "30.5 cm" ]
D
"perimeter of the sector = length of the arc + 2 ( radius ) = ( 135 / 360 * 2 * 22 / 7 * 7 ) + 2 ( 7 ) = 16.5 + 14 = 30.5 cm answer : d"
ARC-Easy
arc_04_00736
A student is measuring the distance a car travels down a ramp using yards. Which measurement is most similar in length when using the metric system of measurement?
[ "centimeter", "kilometer", "millimeter", "meter" ]
D
null
sciq
sciq_01_04294
Solar cells turn sunlight directly into what?
[ "gas", "cold", "electricity", "water" ]
C
Solar energy is used to heat homes and water, and to make electricity. Scientists and engineers have many ways to get energy from the Sun ( Figure below ). One is by using solar cells. Solar cells are devices that turn sunlight directly into electricity. Lots of solar cells make up an individual solar panel. You may ha...
sciq
sciq_01_03313
The volume of a gas is comprised of about 10% matter. what is the rest?
[ "open space", "normal space", "instead space", "empty space" ]
D
The volume of a gas contains only about 10% matter, with the rest being empty space. ΔHsub is equal to ΔHvap.
ARC-Challenge
arc_04_02791
A student adds water and detergent to a cup of soil. The mixture is shaken and allowed to settle. The student observes that silt particles stay suspended long after the other particles form layers at the bottom of the jar. The most likely explanation is that the silt particles are
[ "organic.", "dissolving.", "less dense.", "moving faster." ]
C
null
medmcqa
medmcqa_05_04142
Which of the following conditions can cause bony ankylosis?
[ "Rheumatoid ahritis", "Pyogenic ahritis", "Osteo ahritis", "Traumatic ahritis" ]
B
Pyogenic ahritis causes bony ankylosis.
math_qa
mathqa_03_00788
the largest natural number which exactly divides the product of any 4 consecutive natural numbers is
[ "6", "12", "24", "120" ]
C
sol . required number = 1 × 2 × 3 × 4 = 24 . answer c
openbookqa
obqa_02_01169
When a water balloon is frozen, it will contain
[ "a much less amount of water", "a whole bunch of frozen ice-cream", "the same amount of water", "a greater amount of water" ]
C
as state of matter changes , mass will not change
sciq
sciq_01_06832
What is the term for decomposers that consume dead leaves, animal feces, and other organic debris collected on the ground or at the bottom of water?
[ "consumers", "detritivores", "recyclers", "scavengers" ]
B
Detritivores are decomposers that consume dead leaves, animal feces, and other organic debris that collects on the ground or at the bottom of a body of water. Examples of detritivores include earthworms and catfish. You can see another example in Figure below .
openbookqa
obqa_02_00587
Bill missed high tide, so he had to wait until when to see it again
[ "tomorrow", "next month", "next year", "never" ]
A
the moon rising occurs once per day
ARC-Easy
arc_04_00731
Ten people became sick with the flu after attending a school dance. What is the scenario that could best explain how the people got sick?
[ "contact with environmental sources", "contact with an infected animal", "contact with a contaminated object", "contact with an infected person" ]
D
null
sciq
sciq_01_02621
The scientific name of an organism consists of its genus and what else?
[ "specimens", "mammals", "samples", "species" ]
D
The scientific name of an organism consists of its genus and species.
sciq
sciq_01_01140
What was the early study of chemistry called?
[ "alchemy", "horticulture", "pharmacology", "magic systems" ]
A
However, despite this secrecy several contributions were made to modern-day chemistry. Early acids and bases were discovered, and glassware for running chemical reactions was developed. Alchemy helped improve the study of metallurgy and the extraction of metals from ores. More systematic approaches to research were bei...
math_qa
mathqa_03_02302
if 0.4 of a number is equal to 0.07 of another number , the ratio of the numbers i
[ "2 : 3", "7 : 40", "3 : 20", "20 : 3" ]
B
"sol . 0.4 a = 0.08 b â ‡ ” a / b = 0.07 / 0.40 = 7 / 40 . â ˆ ´ a : b = 7 : 40 . answer b"
math_qa
mathqa_03_00335
q and r are two - digit positive integers that have the same digits but in reverse order . if the positive difference between q and r is less than 20 , what is the greatest possible value of q minus r ?
[ "15", "16", "17", "18" ]
D
"a two - digit integer ` ` ab ' ' can be expressed algebraically as 10 a + b . q - r = ( 10 a + b ) - ( 10 b + a ) = 9 ( a - b ) < 20 . the greatest multiple of 9 which is less than 20 is 18 . the answer is d ."
sciq
sciq_01_06490
Conotoxins released by certain marine snails can bring about paralysis in humans, indicating that this toxin attacks what system?
[ "cerebral", "circulatory", "cardiovascular", "neurological" ]
D
Can Snail Venom Be Used as a Pharmacological Painkiller? Marine snails of the genus Conus (Figure 28.25) attack prey with a venomous sting. The toxin released, known as conotoxin, is a peptide with internal disulfide linkages. Conotoxins can bring about paralysis in humans, indicating that this toxin attacks neurologic...
sciq
sciq_01_04150
Quantities have two parts: the number (how many) and what else?
[ "he unit", "the motion", "the credit", "the member" ]
A
Quantities have two parts: the number and the unit. The number tells “how many. ” It is important to be able to express numbers properly so that the quantities can be communicated properly. Standard notation is the straightforward expression of a number. Numbers such as 17, 101.5, and 0.00446 are expressed in standard ...
math_qa
mathqa_03_01069
at what price must an book costing $ 47.50 be marked in order that after deducting 20 % from the list price . it may be sold at a profit of 25 % on the cost price ?
[ "72.5", "55.5", "64.2", "82.5" ]
C
"c $ 62.50 cp = 47.50 sp = 47.50 * ( 125 / 100 ) = 59.375 mp * ( 80 / 100 ) = 59.375 mp = 74.2"
math_qa
mathqa_03_02080
find the circumference and area of radius 6 cm .
[ "113 cm ²'", "144 cm ²'", "154 cm ²'", "184 cm ²'" ]
A
area of circle = π r ² = 22 / 7 × 6 × 6 cm ² = 113 cm ² answer : a
ARC-Easy
arc_04_01930
Monarch butterflies use milkweed plants during all of their life stages. Milkweed plants grow in open areas, such as grasslands and wetlands. They also often grow between row crops. Given this information, which of these biotechnologies would pose the greatest threat to monarch butterflies?
[ "development of new antibiotics", "development of new herbicides", "development of disease-resistant crops", "development of insect-resistant crops" ]
B
null
ARC-Challenge
arc_04_02815
Which is the most reliable way to get unbiased results when conducting a controlled experiment?
[ "Use more than one control group.", "Try a different experimental group.", "Change the hypothesis if it is incorrect.", "Repeat the procedure exactly the same each time." ]
D
null
sciq
sciq_01_02142
What is the term for the force exerted by circulating blood on the walls of blood vessels?
[ "heart pressure", "blood pressure", "blood energy", "circulation pressure" ]
B
The force exerted by circulating blood on the walls of blood vessels is called blood pressure . Blood pressure is highest in arteries and lowest in veins. When you have your blood pressure checked, it is the blood pressure in arteries that is measured. High blood pressure, or hypertension , is a serious health risk but...
sciq
sciq_01_00914
What else besides temperature has an effect on the phase of a substance?
[ "energy", "pressure", "resistance", "weight" ]
B
Butter is a fat that is a solid at room temperature. What type of fatty acid does butter contain? How do you know?.
medmcqa
medmcqa_05_03120
Heating at 60degC for 30 minute would isolate:
[ "Staphylococci", "Enterococci", "Micrococci", "Streptococci" ]
B
Enterococci
medmcqa
medmcqa_05_00952
Apolipoprotein A-I (Apo A-I) is found in which of the following lipid components?
[ "LDL", "HDL", "VLDL", "Chylomicron" ]
B
About Apo A Apo A-I is impoant component of HDL. ApoA is the activator of LCAT which is impoant enzyme for reverse cholesterol transpo, conveing cholesterol to cholesterol ester. Intestinal cells produce small qualntities of Apo A Apo A-I is a ligand for HDL receptor Apo A-I is anti-aherogenic. Ref: Textbook of Biochem...
openbookqa
obqa_02_00122
December is in the summer in what
[ "the southern part of cities", "the northern part of Earth", "the southern part of the third rock", "the southern part of every rock" ]
C
December is during the summer in the southern hemisphere
math_qa
mathqa_03_02981
each factor of 210 is inscribed on its own plastic ball , and all of the balls are placed in a jar . if a ball is randomly selected from the jar , what is the probability that the ball is inscribed with a multiple of 42 ?
[ "1 / 16", "5 / 42", "1 / 8", "3 / 16" ]
C
"210 = 2 * 3 * 5 * 7 , so the # of factors 210 has is ( 1 + 1 ) ( 1 + 1 ) ( 1 + 1 ) ( 1 + 1 ) = 16 ( see below ) ; 42 = 2 * 3 * 7 , so out of 16 factors only two are multiples of 42 : 42 and 210 , itself ; so , the probability is 2 / 16 = 1 / 8 . answer : c ."
math_qa
mathqa_03_04884
pascal has 96 miles remaining to complete his cycling trip . if he reduced his current speed by 4 miles per hour , the remainder of the trip would take him 16 hours longer than it would if he increased his speed by 50 % . what is his current speed x ?
[ "6", "8", "10", "12" ]
B
"let the current speed be x miles per hour . time taken if speed is 50 % faster ( i . e . 3 x / 2 = 1.5 x ) = 96 / 1.5 x time taken if speed is reduced by 4 miles / hr ( i . e . ( x - 4 ) ) = 96 / ( x - 4 ) as per question , 96 / ( x - 4 ) - 96 / 1.5 x = 16 solving this x we get x = 8 . b ."
sciq
sciq_01_08180
Nonvascular plants such as liverworts, hornworts, and mosses lack what three typical plant features?
[ "roots, leaves, chloroplasts", "chloroplasts, stems, flowers", "flowers, leaves, bark", "roots, stems, leaves" ]
D
Nonvascular plants include liverworts, hornworts, and mosses. They lack roots, stems, and leaves.
sciq
sciq_01_02779
The toothlessness of modern birds, which serves to trim the weight of the head, is an example of what?
[ "genetic drift", "mutation", "variety", "adaptation" ]
D
math_qa
mathqa_03_00000
the mean of 50 observations was 32 . it was found later that an observation 48 was wrongly taken as 23 . the corrected new mean is
[ "35.2", "32.5", "36.5", "39.1" ]
B
"sol . therefore correct sum = ( 32 × 50 + 48 – 23 ) = 1625 . therefore correct mean = 1625 / 50 = 32.5 . answer b"
medmcqa
medmcqa_05_00618
Most common clinical presentation of sarcoidosis:
[ "Pleural plaque", "Hilar lymphadenopathy", "Pulmonary fibrosis", "Interstitial calcification" ]
B
Ans. (b) Hilar lymphadenopathyRef: Robbings pathology 9th ed. 1692-93
sciq
sciq_01_01172
Rubbing your hands together warms them by converting work into what energy?
[ "layer energy", "thermal energy", "motion energy", "kinetic energy" ]
B
To sterilize a 50.0-g glass baby bottle, we must raise its temperature from 22.0ºC to 95.0ºC . How much heat transfer is required? 4. The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final temperature when 1.00 kcal of heat transfers into 1.00 kg...
sciq
sciq_01_10772
What does all matter consist of?
[ "carbon", "oxygen", "atoms", "helium" ]
C
All matter consists of atoms, which cannot be further subdivided into smaller particles.
ARC-Easy
arc_04_01770
Which animal eats only plants?
[ "Cat", "Dog", "Lion", "Rabbit" ]
D
null
medmcqa
medmcqa_05_03854
Radioisotope(s) preferred for management of bone metastasis is/are?
[ "I-131", "Iridium 192", "Sr-89", "Co-60" ]
C
Sr-89 Radioisotope,a beta Emitter used in the palliation of painful Bone metastasis It is metabolised similar to calcium and targets the metabolically active regions of the bone It has a half life of 50.5 Days
sciq
sciq_01_09698
What is the process in which an atom becomes an ion known as?
[ "ionization", "electrification", "oxidation", "evaporation" ]
A
The process in which an atom becomes an ion is called ionization. It may occur when atoms are exposed to high levels of radiation. The radiation may give their outer electrons enough energy to escape from the attraction of the positive nucleus. However, most ions form when atoms transfer electrons to or from other atom...
sciq
sciq_01_11635
How do reptiles typically reproduce?
[ "live birth", "asexually", "sexually", "cloning" ]
C
Reptiles typically reproduce sexually and lay eggs.
medmcqa
medmcqa_05_01793
Most common renal tumour is
[ "Renal cell carcinoma", "Wilm's tumour", "Squamous cell carcinoma of the renal pelvis", "Transitional cell carcinoma of the renal pelvis" ]
A
(Renal cell carcinoma) (1329-30-LB) (1309-B &L 25th)Renal neoplasmBenignMalignant neoplasms* Adenoma* Wilm's tumour (Nephroblastoma in children)* Angioma* Grawitz tumour (Adenocarcinoma, hypernephroma)* Angiomyolipoma* Transitional cell carcinoma of the renal pelvis and collecting system* Squamous carcinoma of the rena...
math_qa
mathqa_03_03517
alok ordered 16 chapatis , 5 plates of rice , 7 plates of mixed vegetable and 6 ice - cream cups . the cost of each chapati is rs . 6 , that of each plate of rice is rs . 45 and that of mixed vegetable is rs . 70 . the amount that alok paid the cashier was rs . 1015 . find the cost of each ice - cream cup ?
[ "34", "76", "29", "12" ]
A
"explanation : let the cost of each ice - cream cup be rs . x 16 ( 6 ) + 5 ( 45 ) + 7 ( 70 ) + 6 ( x ) = 1015 96 + 225 + 490 + 6 x = 1015 6 x = 204 = > x = 34 . answer : a"
medmcqa
medmcqa_05_03156
Traction epiphysis is/are:
[ "Head of humerus", "Lesser tubercle of humerus", "Deltoid tuberosity", "Coracoid process" ]
B
Traction epiphysis are present at the ends of bones and develop due to traction by the attached muscles (and are therefore extracapsular), e.g.Greater (and lesser) tubercles in humerus and  greater (and lesser) trochanter in femur. Pressure epiphysis are involved in weight transmission (and are intracapsular) for e.g. ...
ARC-Easy
arc_04_01191
The digestion process begins in which of the following?
[ "large intestine", "mouth", "small intestine", "stomach" ]
B
null
medmcqa
medmcqa_05_04413
Chandler Index is 225. What is the interpretation?
[ "Potential danger to community", "No danger", "Minor public health problem", "Major public health problem" ]
A
Chandler Index This is the average number of hookworm eggs per gram of faeces for the entire community (Average number of eggs per gram of stools). (Ref. Park PSM 18thed.195)
openbookqa
obqa_02_03851
If a person is running a salad bar and needs to keep the bar cold, and therefore the ice frozen, they might
[ "pour sodium over the ice", "put the ice in the sun", "melt the ice on a stove", "throw the ice away" ]
A
adding salt to a liquid decreases the melting point of that liquid
math_qa
mathqa_03_01829
a manufacturer produces a certain men ' s athletic shoe in integer sizes from 8 to 17 . for this particular shoe , each unit increase in size corresponds to a 1 / 4 - inch increase in the length of the shoe . if the largest size of this shoe is 30 % longer than the smallest size , how long , in inches , is the shoe in ...
[ "9.25", "11.75", "13.25", "15.75" ]
A
"let x be the length of the size 8 shoe . then 0.3 x = 9 / 4 x = 90 / 12 = 15 / 2 inches the size 15 shoe has a length of 15 / 2 + 7 / 4 = 37 / 4 = 9.25 inches the answer is a ."
ARC-Challenge
arc_04_02375
How do moose use a learned behavior to protect themselves?
[ "They have hollow hair to keep warm in the winter.", "They roll in a pool of muddy water to avoid fly bites.", "They have keen hearing to sense danger in the forest.", "They use their wide hooves to prevent sinking in deep snow." ]
B
null
medmcqa
medmcqa_05_04517
An alcoholic presented with ascites, bloody tap and elevated alfa fetoprotien. The diagnosis is
[ "Choriocarcinoma", "Hepatocellular Carcinoma", "Acute haemorrhagic pancreatitis", "Pancreatic carcinoma" ]
B
(B) Hepatocellular Carcinoma # Hepatocellular carcinoma (HCC) is a primary malignancy of the hepatocyte, generally leading to death within 6-20 months. HCC frequently arises in the setting of cirrhosis, appearing 20-30 years following the initial insult to the liver.> 25% of patients have no history or risk factors for...
math_qa
mathqa_03_02511
the area of a triangle is with base 4.5 m and height 6 m ?
[ "11 m 2", "10 m 2", "13.5 m 2", "19 m 2" ]
C
"1 / 2 * 4.5 * 6 = 13.5 m 2 answer : c"
sciq
sciq_01_01468
What is the process of removing wastes and excess water from the body called?
[ "inspiration", "diffusion", "excretion", "ingestion" ]
C
Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis. Although the kidneys are the main organs of excretion, several other organs also excrete wastes. They include the large intestine, liver, skin, and lungs. All of these organs of excret...
math_qa
mathqa_03_04793
in a function , every person shakes hand with every other person . if there was a total of 28 handshakes in the function , how many persons were present in the function ?
[ "8", "7", "2", "6" ]
A
suppose there are nn persons present in a function and every person shakes hand with every other person . then , total number of handshakes = nc 2 = n ( n − 1 ) / 2 n ( n − 1 ) = 28 × 2 n ( n − 1 ) = 56 n = 8 answer a 8
openbookqa
obqa_02_02930
Clothes fresh out of the laundry are great because they are
[ "darkness", "comfort", "temperate", "wonder" ]
C
a hot something is a source of heat
openbookqa
obqa_02_00752
Gills allow
[ "flounder to intake oxygen", "giraffes to breathe underwater", "respiration for seals and herons", "respiration for sea going birds" ]
A
gills are used for breathing water by aquatic animals
ARC-Easy
arc_04_00549
Which statement correctly describes a relationship between two human body systems?
[ "The digestive system absorbs nutrients which are transported by the nervous system.", "The digestive system absorbs nutrients which are transported by the circulatory system.", "The circulatory system exchanges gases which are transported by the nervous system.", "The circulatory system exchanges gases which...
B
null
math_qa
mathqa_03_03284
geetha ' s home has one tap , working alone at its maximum constant rate , can fill a certain sink in 210 seconds . a second tap , working alone at its maximum constant rate , can fill the same sink in 214 seconds . if both taps work together at their respective maximum constant rates , the time it will take to fill th...
[ "106 seconds", "130 seconds", "177 seconds", "200 seconds" ]
A
tap 1 : 210 secs tap 2 : 214 secs considering the average of these 2 taps : 212 secs . so 1 tap can fill the tank in 212 secs , so 2 taps can fill the tank in 212 / 2 = 106 secs . closest answer is a .
openbookqa
obqa_02_01414
A penguin, while a bird, would avoid living in
[ "a cold pole", "a zoo", "a frozen habitat", "a native forest" ]
D
some birds live in forests
sciq
sciq_01_04081
Tubeworms deep in the galapagos rift get their energy from what type of bacteria?
[ "sprillia", "filamentous", "chemosynthetic", "asexual" ]
C
Tubeworms deep in the Galapagos Rift get their energy from chemosynthetic bacteria. Tubeworms have no mouth, eyes, or stomach. Their survival depends on a symbiotic relationship with the billions of bacteria that live inside them. These bacteria convert the chemicals that shoot out of the hydrothermal vents into food f...