dataset
stringclasses
6 values
id
stringlengths
12
16
question
stringlengths
1
935
choices
listlengths
4
4
answer
stringclasses
4 values
support
stringlengths
0
7.76k
math_qa
mathqa_03_04513
x , a , z , and b are single digit positive integers . x = ¼ a . z = ¼ b . ( 10 a + b ) – ( 10 x + z ) could not equal
[ "33", "36", "44", "63" ]
C
from the given equations , a = 4 x , b = 4 z ( 10 a + b ) - ( 10 x + z ) = 40 x + 4 z - 10 x - z = 30 x + 3 z = 3 ( 10 x + z ) therefore the resultant should be divisible by 3 which is n ' t possible only in the case of c . hence c is the answer
sciq
sciq_01_07057
What is the only substance on earth that is stable in all three states?
[ "carbon", "air", "water", "mercury" ]
C
Water is the only substance on Earth that is stable in all three states.
sciq
sciq_01_04702
What kind of electricity can you generate with the energy found in flowing water?
[ "wind energy", "hydroelectric power", "transient power", "electrical power" ]
B
The mechanical energy of rapidly flowing water can turn a turbine and generate electricity. Electricity produced in this way is called hydroelectric power. The water may flow over a waterfall or through a dam. You can see a picture of a dam in the Figure below . A drawback of dams is that they flood land upstream from ...
math_qa
mathqa_03_00367
total 60 cows 20 cow gives each 2 liter milk 20 cow gives each 3 / 4 liter milk 20 cow gives each 1 / 4 liter milk this is split into 3 son per each 20 cows & 20 liter milk how ?
[ "20", "10", "15", "16" ]
A
20 cow 2 liter each = 40 liter 20 cow 3 / 4 liter each = 3 / 4 = 0.75 * 20 = 15 20 cow 1 / 4 liter each = 1 / 4 = 0.25 * 20 = 5 add 40 + 15 + 5 = 60 milk split into 3 son each 20 liter then 60 / 3 = 20 answer : a
sciq
sciq_01_07781
Type 1 diabetes results in the pancreas not being able to make what ?
[ "insulin", "sugar", "hemoglobin", "glucose" ]
A
Type 1 diabetes occurs when the immune system attacks normal cells of the pancreas. Since the cells in the pancreas are damaged, the pancreas cannot make insulin. Type 1 diabetes usually develops in childhood or adolescence.
sciq
sciq_01_10645
What kind of reactions absorb energy from their surroundings as they occur?
[ "autotrophic", "endothermic", "exothermic", "hydrostatic" ]
B
Endothermic reactions absorb energy from the surroundings as the reaction occurs. When 1 mol of calcium carbonate decomposes into 1 mol of calcium oxide and 1 mol of carbon dioxide, 177.8 kJ of heat is absorbed. The process is shown visually in Figure above (B). The thermochemical reaction is shown below.
sciq
sciq_01_08542
What do nearly all nonsense mutations lead to ?
[ "nonfunctional proteins", "dehydration", "downs syndrome", "hormone release" ]
A
openbookqa
obqa_02_00162
Puerto Rico experienced many landslides due to Hurricane Maria in
[ "2017", "2015", "2012", "2009" ]
A
storms can cause a landslide
sciq
sciq_01_06448
What is the main difference between prokaryotic or eukaryotic cells ?
[ "the type of metabolic waste", "the presence of cell walls", "the presence of a Golgi Apparatus", "the presence of a nucleus" ]
D
The answer depends on if the cell is prokaryotic or eukaryotic. The main difference between the two types of cells is the presence of a nucleus. And in eukaryotic cells, DNA lives in the nucleus.
sciq
sciq_01_00582
How does alcohol expand over a wide range of temperatures?
[ "uniformly", "exponentially", "variably", "erratically" ]
A
The red liquid in this thermometer is alcohol. Alcohol expands uniformly over a wide range of temperatures. This makes it ideal for use in thermometers.
math_qa
mathqa_03_02734
think of a number , divide it by 5 and add 6 to it . the result is 65 . what is the number thought of ?
[ "24", "77", "295", "267" ]
C
"explanation : 65 - 6 = 59 59 x 5 = 295 answer : c"
math_qa
mathqa_03_03713
50 persons like apple . 7 like orange and mango dislike apple . 10 like mango and apple and dislike orange . 4 like all . how many people like apple ?
[ "47", "46", "54", "57" ]
D
"orange + mango - apple = 7 mango + apple - orange = 10 apple = 50 orange + mango + apple = 4 50 + 10 + 4 - 7 = 57 like apple answer : d"
medmcqa
medmcqa_05_04285
Talipes equinovarus is -
[ "Equinus, inversion, abduction", "Equines, inversion, adduction", "Equines, eversion, adduction", "Equines, eversion, abduction" ]
B
CTEV is the commonest and most important congenital deformity of the foot. The deformity consists of following elements :- Equinus, i.e. Plantar flexion at ankle joint (tibiotalar joint) Inversion of foot at subtalar joint (talocalcaneal joint) Forefoot adduction, at mid-tarsal joints, especially at talo-navicular jo...
medmcqa
medmcqa_05_01121
A 40 year old female presenting with a slow growing painless mass is recently diagnosed to have thyroid cancer. Which is the most common subtype of thyroid cancer?
[ "Medullary carcinoma", "Papillary carcinoma", "Follicular carcinoma", "Anaplastic carcinoma" ]
B
Papillary carcinoma accounts for 80% of all thyroid malignancies in iodine sufficient areas and is the predominant thyroid cancer in children and individuals exposed to external radiation. It is more common in women with a 2:1 female to male ratio. Mean age of presentation is 30 to 40 years. Most patients presents with...
math_qa
mathqa_03_03508
the sum of the present age of henry and jill is 48 . what is their present ages if 9 years ago henry was twice the age of jill ?
[ "and 27", "and 24", "and 22", "and 29" ]
D
"let the age of jill 9 years ago be x , age of henry be 2 x x + 9 + 2 x + 9 = 48 x = 10 present ages will be 19 and 29 answer : d"
medmcqa
medmcqa_05_03121
Investigation of choice for DVT is
[ "Duplex USG", "VQ scan", "Plethysmography", "D-dimer assay" ]
A
. Duplex scanning shows noncompressible vein which is wider than normal.On compression over calf muscles,it does not show any augmentation of flow.Normal venous sound atg the area of femoral vein which disappears during inspiration is conspicuously absent in DVT. Refer page no 224 of SRB's manual of surgery 5 th editio...
sciq
sciq_01_04787
The challenge of techniques used for proteomic analyses is the difficulty in detecting small quantities of what?
[ "bacteria", "acids", "particles", "proteins" ]
D
The challenge of techniques used for proteomic analyses is the difficulty in detecting small quantities of proteins. Although mass spectrometry is good for detecting small amounts of proteins, variations in protein expression in diseased states can be difficult to discern. Proteins are naturally unstable molecules, whi...
sciq
sciq_01_08048
Biomass can also be processed to make what kind of fuel?
[ "fossil", "gasoline", "hydrogen fuel", "biofuel" ]
D
Biomass is another renewable source of energy. Biomass includes wood, grains, and other plant materials or waste materials. People can burn wood directly for energy in the form of heat. Biomass can also be processed to make biofuel. Biofuel is a fairly new type of energy that is becoming more popular. Biomass is useful...
sciq
sciq_01_09687
What is the theory scientists use to explain the matter in the universe and how it's held together?
[ "original model", "standard model", "organic model", "specific model" ]
B
Based on their knowledge of subatomic particles, scientists have developed a theory called the standard model to explain all the matter in the universe and how it is held together. The model includes only the fundamental particles in the Table above . No other particles are needed to explain all kinds of matter. Accord...
sciq
sciq_01_02527
What is the measure of change in velocity of a moving object?
[ "transmission", "vibration", "kinetic energy", "acceleration" ]
D
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector.
math_qa
mathqa_03_04068
in the hillside summer camp there are 50 children . 80 % of the children are boys and the rest are girls . the camp administrator decided to make the number of girls only 10 % of the total number of children in the camp . how many more boys must she bring to make that happen ?
[ "55", "50", "40 .", "30 ." ]
B
"given there are 50 students , 80 % of 50 = 40 boys and remaining 10 girls . now here 80 % are boys and 20 % are girls . now question is asking about how many boys do we need to add , to make the girls percentage to 20 or 20 % . . if we add 50 to existing 40 then the count will be 90 and the girls number will be 10 as ...
ARC-Easy
arc_04_00733
Which statement is a MAJOR mistake in the experimental design?
[ "A control group was not used.", "The same type of pot and soil was used.", "Each plant received the same amount of water.", "Too much data will be collected in three weeks." ]
A
null
ARC-Easy
arc_04_01980
The brown tree snake is a nonnative species found on the South Pacific island of Guam. The brown tree snake population in Guam is so large that it negatively affects the humans there. Which statement best explains why the brown tree snake has flourished in Guam?
[ "There are many animals for food.", "There are no natural snake predators.", "The climate is ideal for snake reproduction.", "The vegetation provides good habitat for hunting." ]
B
null
ARC-Easy
arc_04_00136
Which best describes the role of the esophagus in digestion?
[ "It releases acid and mixes food.", "It aids in absorption of nutrients from food.", "It carries food from the mouth to the stomach.", "It carries food from the stomach to the intestines." ]
C
null
sciq
sciq_01_03652
A rusty bike has been left outside in damp weather too many times, so the iron in the metal parts have?
[ "decayed", "rusted", "melted", "eroded" ]
B
Look at this rusty bike. It has been left outside in damp weather too many times, so the iron in the metal parts has rusted. Iron rusts when it combines with oxygen in the air. Iron rusting is an example of a chemical reaction. In a chemical reaction, substances change into entirely different substances. For example, t...
medmcqa
medmcqa_05_00882
Best contraceptive for newly married couples?
[ "IUCD", "Hormonal pills", "Rythem method", "Condom" ]
B
Ans. is 'b' i.e., Hormonal pills
medmcqa
medmcqa_05_00036
Most common radiation induced cancer:
[ "Thyroid Carcinoma", "Breast Carcinoma", "Leukemia", "Sarcomas" ]
C
Leukemia is most common radiation induced cancer. Others: Thyroid, Breast Carcinoma
sciq
sciq_01_09291
The extracellular fluid is in contact with the axon membrane only at what location?
[ "dendrites", "synapses", "Sensory Receptors", "the nodes" ]
D
openbookqa
obqa_02_02308
Comparing an arid acre to a jungle acre, the jungle acre will host
[ "less moisture", "excesses of moisture", "fewer water droplets", "less fluid" ]
B
as dryness increases in an environment , the available water in that environment will decrease
medmcqa
medmcqa_05_04555
The arrow marked structure drains into:
[ "Right atrium", "Left atrium", "Right ventricle", "Left ventricle" ]
A
Ans. A. Right atriumThe arrow marked structure is coronary sinus and it drains into right atrium.
openbookqa
obqa_02_03264
If a log is cold it is in
[ "an oven", "a fire", "a toaster", "a tundra" ]
D
something in a cold place becomes cold
sciq
sciq_01_00672
What is the force that pulls particles at the exposed surface of a liquid toward other liquid particles called?
[ "surface tension", "shinking tension", "conservative tension", "transfer tension" ]
A
Two unique properties of liquids are surface tension and viscosity. Surface tension is a force that pulls particles at the exposed surface of a liquid toward other liquid particles. Surface tension explains why water forms droplets, like the water droplet that has formed on the leaky faucet pictured in the Figure below...
ARC-Challenge
arc_04_03222
Why are the rocks and pebbles found on riverbeds usually smooth?
[ "The rocks and pebbles in riverbeds are not very old.", "The rocks and pebbles rub against each other as water flows over them.", "Rivers can only flow over smooth rocks and pebbles.", "Organisms in the rivers break down the rocks and pebbles." ]
B
null
sciq
sciq_01_06607
Parasitism, mutualism, and commensalism are instances of what type of interaction?
[ "semantic", "antibiotic", "enzymatic", "symbiotic" ]
D
openbookqa
obqa_02_04460
A dog can breathe
[ "under an ocean", "out in space", "in a church", "in a sarcophagus" ]
C
an animal requires oxygen for to breathe
openbookqa
obqa_02_04507
All predators are also carnivorous because predators
[ "listen to music", "make stuff", "cook veggies", "ingest flesh" ]
D
some birds are predators
math_qa
mathqa_03_04244
a store reported total sales of $ 385 million for february of this year . if the total sales for the same month last year was $ 320 million , approximately what was the percent increase w in sales ?
[ "2 %", "17 %", "20 %", "65 %" ]
C
"last year ' s sales = $ 320 million ; this year ' s sales = $ 385 million ; increase w = $ 65 million . now , 20 % of $ 320 million is $ 64 million , which is very close to actual increase of $ 65 million . answer : c ."
sciq
sciq_01_06019
The composition of the magma determines if the rock is mafic, felsic, or what?
[ "intermediate", "variable", "porous", "magnetic" ]
A
The composition of the magma determines if the rock is mafic, felsic, or intermediate.
medmcqa
medmcqa_05_02099
ECG changer in digitalis toxicity are A/E ?
[ "T wave inversion", "Diminished T wave amplitude", "Conduction block", "ST depression in proximal pa" ]
B
Ans. is 'b' i.e., Diminished T wave amplitude All the given ECG changes can be produced by digitalis. o But, examinar has asked specifically about the ECG changes in digitalis toxicity (not at therapeutic concentration) Diminished T wave amplitude occurs at therapeutic concentration, in toxicity T wave becomes inveed. ...
sciq
sciq_01_06942
Name the term used to described prokaryotes that require oxygen.
[ "mouth breathers", "aerobic", "anaerobic", "hydrophylic" ]
B
Prokaryotes that need oxygen are described as aerobic. They use oxygen for cellular respiration. Examples include the prokaryotes that live on your skin.
sciq
sciq_01_06268
What kind of tests may detect substances associated with particular disorders?
[ "genetic", "electrical", "biochemical", "hormonal" ]
C
sciq
sciq_01_06467
The periodic table of elements is divided into what?
[ "squares", "spheres", "patterns", "groups" ]
A
Each element has its own square in the periodic table. The square contains the chemical symbol for the element, the atomic number, and the atomic weight . The atomic weight of an element is a weighted average of its isotopes.
ARC-Easy
arc_04_01153
Which organism belongs in the kingdom Protista?
[ "sponge", "liverwort", "mushroom", "paramecium" ]
D
null
openbookqa
obqa_02_00875
A boy is standing in the bathroom brushing his teeth, but the lights are off in the bathroom. However, his room is next to the bathroom and his bedroom light is on. The bathroom is still bright, because the mirror reflects
[ "light from a car", "light from the sun", "light from the bathroom", "light from the bedroom" ]
D
a mirror reflects light
medmcqa
medmcqa_05_04809
Shakir's tape is used in age group of:-
[ "3 months to 5 years", "6 months to 5 years", "9 months to 5 years", "1 year to 5 years" ]
B
Mid Arm Circumference:- Field instrument used to measure Mid arm circumference is Shakir's tape Used in age group 6 months to 5years. Normal value is > 13.5cms Mild to moderate PEM = 12.5 -13.5 cms Severe PEM = <12.5 cms
openbookqa
obqa_02_01221
Sound can be used for communication by
[ "creatures", "plants", "water", "planets" ]
A
sound can be used for communication by animals
sciq
sciq_01_07228
What is the lowest level of organism that can perform all activities required for life?
[ "nucleus", "system", "cell", "atom" ]
C
sciq
sciq_01_01843
What is a combination of two or more substances in any proportions called?
[ "structure", "mixture", "mix", "Combination" ]
B
A mixture is a combination of two or more substances in any proportions. The substances in a mixture do not combine chemically, so they retain their physical properties.
math_qa
mathqa_03_01508
70 is subtracted from 30 % of a number , the result is 20 . find the number ?
[ "150", "997", "266", "300" ]
D
( 30 / 100 ) * x – 70 = 20 3 x = 900 x = 300 answer : d
sciq
sciq_01_01106
Bones are part of which body system?
[ "skeletal system", "muscular system", "circulation system", "hard system" ]
A
The brain and spinal cord are protected within bones of the skeletal system, but injuries to these organs still occur. With mild injuries, there may be no lasting effects. With severe injuries, there may be permanent disability or even death.
sciq
sciq_01_05872
What is the term for when the water of the ocean slowly rises and falls?
[ "waves", "currents", "dew", "tides" ]
D
If you’ve ever visited an ocean shore, then you know that ocean water is always moving. Waves ripple through the water, as shown in Figure below . The water slowly rises and falls because of tides. You may see signs warning of currents that flow close to shore. What causes all these ocean motions? Different types of mo...
sciq
sciq_01_07355
The process by which an organism develops from a single-celled zygote to a multi-cellular organism is complex and well regulated. the regulation occurs through signaling between cells and tissues and responses in the form of what?
[ "phenotype exchange", "spontaneous mutation", "dna replication", "differential gene expression" ]
D
The process by which an organism develops from a single-celled zygote to a multi-cellular organism is complex and well regulated. The regulation occurs through signaling between cells and tissues and responses in the form of differential gene expression.
sciq
sciq_01_10152
The fungus benefits from the constant supply of food produced by what?
[ "the phytoflagellate", "the photosynthesizer", "the spermatophyte", "the host" ]
B
A lichen is a mutualistic relationship between a fungus and a photosynthetic organism. The other organism is usually a cyanobacterium or green alga. The fungus grows around the bacterial or algal cells. The fungus benefits from the constant supply of food produced by the photosynthesizer. The photosynthesizer benefits ...
openbookqa
obqa_02_01672
Kiln fired clay ingots can insulate from
[ "ionic discharge", "falling meteors", "snowmen", "underground rivers" ]
A
brick is an electrical insulator
sciq
sciq_01_07284
In which period of the periodic table is nickel found?
[ "fourth period", "Second Period", "Third Period", "First Period" ]
A
The period to which a given element belongs can easily be determined from its electron configuration. For example, consider the element nickel (Ni). Its electron configuration is [Ar]3 d 8 4 s 2 . The highest occupied principal energy level is the fourth, indicated by the 4 in the 4 s 2 portion of the configuration. Th...
math_qa
mathqa_03_02148
a class of 35 students has an average height of 180 cm . 7 students whose average height is 120 cm , left the class and 7 others whose average height is 140 cm , joined . calculate the new average height of the students of the class ( in cm ) is ?
[ "204.6 cm", "404.6 cm", "224.6 cm", "205.6 cm" ]
A
total height = 180 * 35 = 6300 cm . total height of those who left = 120 * 7 = 840 total height of those who joined = 140 * 7 = 980 new average = [ 6300 - 120 + 980 ] / 35 = 7160 / 35 cm . = 204.6 cm answer : a
sciq
sciq_01_07065
The spin quantum number describes the spin for a given what?
[ "proton", "electron", "element", "ion" ]
B
The spin quantum number describes the spin for a given electron. An electron can have one of two associated spins, spin, or spin. An electron cannot have zero spin. We also represent spin with arrows or . A single orbital can hold a maximum of two electrons and each must have opposite spin.
sciq
sciq_01_07288
What is the term for the decayed remains of living organisms?
[ "necrosis", "intermediate material", "waste", "humus" ]
D
Humus is the decayed remains of living organisms. Humus makes soil fertile.
medmcqa
medmcqa_05_02899
Closure of the foramen primum results from fusion of which of the following structures?
[ "Septum secundum and the fused atrioventricular cushions", "Septum secundum and the septum primum", "Septum primum and the fused atrioventricular cushions", "Septum primum and the septum spurium" ]
C
C. The foramen primum forms between the free edge of the septum primum and the atrioventricular (AV) cushions. It is closed when the septum primum fuses with the AV cushions.
sciq
sciq_01_09268
What impact does photosynthesis have on the direction of electron flow?
[ "cools it", "cycles it", "repeats it", "reverses it" ]
D
ARC-Challenge
arc_04_02856
Water freezing is an example of a
[ "liquid changing to a solid", "solid changing to a liquid", "gas changing to a solid", "gas changing to a liquid" ]
A
null
sciq
sciq_01_00962
What are materials that are good conductors of thermal energy called?
[ "thermal conductors", "reflective conductors", "geospatial conductors", "atmospheric conductors" ]
A
Conduction is usually faster in liquids and certain solids than in gases. Materials that are good conductors of thermal energy are called thermal conductors . Metals are excellent thermal conductors. They have freely moving electrons that can transfer energy quickly and easily. That’s why the metal pot in Figure above ...
ARC-Easy
arc_04_01082
What form of energy is stored in a battery?
[ "chemical", "sound", "light", "heat" ]
A
null
openbookqa
obqa_02_04331
What requires energy for survival?
[ "air", "giraffes", "rocks", "sand" ]
B
living things all require energy for survival
sciq
sciq_01_00403
What are the two main divisions of the human nervous system?
[ "somatic and autonomic", "central and peripheral", "central and identical", "left and right" ]
B
The two main divisions of the human nervous system are the central nervous system and the peripheral nervous system. The peripheral nervous system has additional divisions.
openbookqa
obqa_02_04617
Who would likely need a compass?
[ "a fish", "a taxi driver", "a bobcat", "a seaman" ]
D
natural magnetism is used for pointing north by a compass
sciq
sciq_01_02567
A muscle can return to its original length when relaxed due to a quality of muscle tissue called what?
[ "viscosity", "reach", "elasticity", "moisture" ]
C
The muscles all begin the actual process of contracting (shortening) when a protein called actin is pulled by a protein called myosin. This occurs in striated muscle (skeletal and cardiac) after specific binding sites on the actin have been exposed in response to the interaction between calcium ions (Ca++) and proteins...
sciq
sciq_01_10052
Antibiotic drugs are usually effective in treating what kind of infections?
[ "bacterial", "biological", "lethal", "viral" ]
A
Bacterial infections of urinary organs, especially the urinary bladder, are common. They are called urinary tract infections. Generally, they can be cured with antibiotic drugs. However, if they aren’t treated, they can lead to more serious infections and damage to the kidneys.
math_qa
mathqa_03_02013
there are 4 runners on a track team who run an average of 4.5 seconds per 40 yards . if another runner joins their team who runs 4.3 seconds per 40 yards , what will the new average 40 yard time be ?
[ "4.46", "4.39", "4.42", "4.49" ]
A
( sum of the 4 times ) / 4 = 4.5 sum of the 4 times = 18 new sum = 18 + 4.3 = 22.3 new average = 22.3 / 5 = 4.46 ans : a
sciq
sciq_01_08247
Metals are elements that can conduct what?
[ "pollution", "orchestras", "cycle", "electricity" ]
D
Metals are elements that can conduct electricity. Most elements are metals.
ARC-Easy
arc_04_02005
A group of students is taking a hike along a stream channel. One student picks up a rock from the stream and notices that the rock is very smooth and round. Which type of weathering most likely shaped the rock?
[ "abrasion", "exfoliation", "fracturing", "oxidation" ]
A
null
sciq
sciq_01_08785
Natural gas, such as those burned by gas stoves, is composed mostly of this?
[ "methane", "sulfur", "oxygen", "carbon monoxide" ]
A
The burner on a gas stove burns with a pretty blue flame like the one pictured in the opening image. The fuel burned by most gas stoves is natural gas, which consists mainly of methane. Methane is a compound that contains only carbon and hydrogen. Like many other compounds that consist of just these two elements, metha...
openbookqa
obqa_02_00190
A planet rotating causes cycles of day and night on that planet, like on
[ "Orion", "the Moon", "Jupiter", "Pluto" ]
C
a planet rotating causes cycles of day and night on that planet
ARC-Challenge
arc_04_02605
A student is given three identically sized blocks. Each block is made of a different material. What characteristic of the blocks should be examined to find out which block is made of metal?
[ "color", "weight", "texture", "conductivity" ]
D
null
openbookqa
obqa_02_01331
Factories often add something to the environment that is
[ "helpful", "productive", "sanitizing", "posionous" ]
D
polluting means something poisonous is added to an environment causing harm to the environment
openbookqa
obqa_02_01033
When a sound is produced inside a room, sometimes there is a
[ "light", "electric charge", "delayed reflection", "video" ]
C
when a sound is produced inside of a room , there is sometimes an echo after the sound
ARC-Easy
arc_04_02096
Carlos puts a new battery into a radio. What does the battery supply to the radio that makes it turn on?
[ "friction", "electricity", "a sound wave", "a magnetic field" ]
B
null
openbookqa
obqa_02_00625
Heating ice
[ "changes it's chemical make-up", "will leave a puddle", "requires a deep freezer", "makes it even colder" ]
B
heat can change the state of matter
math_qa
mathqa_03_02213
without stoppages , a train travels certain distance with an average speed of 100 km / h , and with stoppages , it covers the same distance with an average speed of 95 km / h . how many minutes per hour the train stops ?
[ "1", "2", "3", "4" ]
C
due to stoppages , it covers 5 km less . time taken to cover 5 km = 5 ⠁ „ 100 h = 1 ⠁ „ 20 h = 1 ⠁ „ 20 ã — 60 min = 3 min answer c
medmcqa
medmcqa_05_03547
A 32-year-woman is admitted to the emergency department as a rape case. Fluids from her vagina are collected for DNA and fructose examination. Which of the following male organs is responsible for fructose production?
[ "Prostate gland", "Seminal vesicles", "Kidneys", "Testis" ]
B
Seminal vesicles produce the alkaline constituent of the ejaculate. This includes fructose and choline. The prostate gland secretes prostaglandins, citric acid, and acid phosphatase. The kidneys are the site of urine production. The testes produce spermatozoa and sex hormones. The bulbourethral glands (Cowper's glands)...
medmcqa
medmcqa_05_04552
Poststreptococcal glomerulonephritis presents with
[ "Asymptomatic hematuria", "Renal failure", "Massive anasarca", "Massive renomegaly" ]
B
Clinical Features The most common clinical presentation is acute nephritic syndrome. Edema and hypeension are common, with mild to moderate azotemia. Characteristically, there is gross hematuria, the urine appearing smoky brown rather than bright red due to oxidation of hemoglobin to methemoglobin. Some degree of prote...
math_qa
mathqa_03_04614
the decimal 0.1 is how many times greater than the decimal ( 0.0001 ) ^ 3 ?
[ "10 ^ 9", "10 ^ 10", "10 ^ 11", "10 ^ 12" ]
C
"0.1 = 10 ^ - 1 ( 0.0001 ) ^ 3 = ( 10 ^ - 4 ) ^ 3 = 10 ^ - 12 10 ^ 11 * 10 ^ - 12 = 10 ^ - 1 the answer is c ."
sciq
sciq_01_01725
Sickle cell disease is caused by production of an abnormal type of what?
[ "hemoglobin", "leukocyte", "fat globule", "thrombocyte" ]
A
down into three major groups: those caused by blood loss, those caused by faulty or decreased RBC production, and those caused by excessive destruction of RBCs. Clinicians often use two groupings in diagnosis: The kinetic approach focuses on evaluating the production, destruction, and removal of RBCs, whereas the morph...
sciq
sciq_01_08045
What helps an insectivorous plant attract and digest insects?
[ "specialized flowers", "specialized leaves", "special seeds", "spines" ]
B
Insectivorous Plants An insectivorous plant has specialized leaves to attract and digest insects. The Venus flytrap is popularly known for its insectivorous mode of nutrition, and has leaves that work as traps (Figure 31.16). The minerals it obtains from prey compensate for those lacking in the boggy (low pH) soil of i...
medmcqa
medmcqa_05_03730
Erb's palsy occurs due to involvement of
[ "Upper trunk of brachial plexus", "Middle trunk of brachial plexus", "Medial cord of brachial plexus", "Lateral trunk of brachial plexus" ]
A
ERB'S PARALYSIS:- upper plexus injury.Caused by forceful widening of the angle between the head and shoulder which may occur by traction of arm during the bih of a child or by fall on the shoulder.Involves upper trunk - C5, C6 roots. Leads to typical deformity in the limb- policeman's tip hand/ poer's tip hand. The arm...
math_qa
mathqa_03_01363
the average of 11 results is 42 , if the average of first 5 results is 49 and that of the last 7 is 52 . find the fifth result ?
[ "145", "146", "147", "148" ]
C
1 to 11 = 11 * 42 = 462 1 to 5 = 5 * 49 = 245 5 to 11 = 7 * 52 = 364 5 th = 245 + 364 – 462 = 147 answer : c
medmcqa
medmcqa_05_04716
Only congenital cyanotic heart disease with Left Ventricular hypertrophy and Left atrial enlargement
[ "Coarctation of Aorta", "Tricuspid atresia", "Ebstein's anomaly", "Transposition of great arteries" ]
B
Tricuspid atresia→blood from Right atrium to Left atrium→more blood to Left atrium leading to Left atrial enlargement→more blood to left Ventricle leads to left ventricular hypertrophy.
sciq
sciq_01_01031
What is the pressure of gas in a gas mixture termed?
[ "gaseous energy", "partial pressure", "partial energy", "gaseous pressure" ]
B
The pressure of a gas in a gas mixture is termed the partial pressure.
ARC-Easy
arc_04_00935
Which form of energy is found in food?
[ "chemical", "electrical", "sound", "mechanical" ]
A
null
math_qa
mathqa_03_00092
ana climbs up stairs 20 floors building and back . she takes the exact same route both ways . on the trip up she climbs an average speed of 2 steps per second . on the trip back she climbs down at an average speed of 4 steps per second . what is her approximate average speed for the round trip in miles per hour ?
[ "1", "1.25", "1.33", "1.5" ]
C
average speed = total distance / total time here number of steps to 20 th floor and back is same as she takes the same route . d = 2 t 1 and d = 4 t 2 therefore , t 1 = d / 2 and t 2 = d / 4 t 1 + t 2 = 3 d / 4 therefore , average speed = 2 d / 3 d / 4 = 2 d * 4 / 3 d answer is 1.3 since , the options are far away we n...
openbookqa
obqa_02_03938
Ice wedging is caused by cycles of freezing and thawing of what?
[ "h2o", "plants", "winds", "animals" ]
A
cycles of freezing and thawing water cause ice wedging
math_qa
mathqa_03_03378
a and b can finish a work in 10 days while a alone can do the same work in 20 days . in how many days b alone will complete the work ?
[ "20 days", "48 days", "98 days", "31 days" ]
A
"b = 1 / 10 – 1 / 20 = 1 / 20 = > 20 days answer : a"
sciq
sciq_01_07741
What is another term for the early larval stage of a frog?
[ "egg", "ovary", "tadpole", "young" ]
C
The majority of amphibian species go through a larval stage that is very different from the adult form, as you can see from the frog in Figure below . The early larval, or tadpole , stage resembles a fish. It lacks legs and has a long tail, which it uses to swim. The tadpole also has gills to absorb oxygen from water. ...
medmcqa
medmcqa_05_02628
Largest lymphatic organ in the human body is
[ "Liver", "Spleen", "Thymus", "Kidney" ]
B
Spleen: - Largest lymphatic organ connected to blood vascular system. Acts as filter for blood Plays an impoant role in immune response of body Lies mainly in hypochondrium & paly in epigastrium Normally not palpable Supplied by splenic aery - the largest branch of celiac trunk Splenic vein is formed at hilum of spleen...
sciq
sciq_01_09502
What does a hydrolase use to split molecules?
[ "water", "air", "momentum", "gas" ]
A
Hydrolase – A hydrolase splits a molecule into two fragments by using water. The catalyzed reaction is referred to as a hydrolysis.
sciq
sciq_01_00072
Internal and external forms of what life process occur as simple diffusion due to a partial pressure gradient?
[ "reproduction", "photosynthesis", "metabolism", "respiration" ]
D
Internal Respiration Internal respiration is gas exchange that occurs at the level of body tissues (Figure 22.23). Similar to external respiration, internal respiration also occurs as simple diffusion due to a partial pressure gradient. However, the partial pressure gradients are opposite of those present at the respir...
sciq
sciq_01_02194
What do you call pure substances with unique properties?
[ "structures", "arrangements", "elements", "originals" ]
C
Elements are pure substances with unique properties. There are more than 100 different elements (92 of which occur naturally). The smallest particles of elements are atoms.
openbookqa
obqa_02_00881
an animal is controlled by a
[ "collection of neurons", "friend", "weather condition", "higher power" ]
A
an animal 's brain controls that animal
math_qa
mathqa_03_01390
a certain rectangular window is two times as long as it is wide . if its perimeter is 30 feet , what are its dimensions in terms of length by width ?
[ "12 by 2", "11 by 3", "10.5 by 3.5", "10 by 5" ]
D
"2 x + 2 y = 30 x + y = 15 x + 2 x = 15 3 x = 15 x = 5 answer d"
medmcqa
medmcqa_05_03934
Limulus amoebocyte lysate test is used to detect ?
[ "Endotoxin", "Verocytotoxin", "Pyroexotoxin-A", "Alpha-toxin of Cl. perfringens" ]
A
Ans. is 'a' i.e., Endotoxin Limulus amoebocyte lysate (LAL), an aqueous extract of amoebocytes from the horseshoe crab, Limulus polyphemus, reacts with endotoxin to form a gel or a clot.Under standardized conditions, this reaction detects picogram quantities of endotoxin.The clotting reaction is triggered when the LAL ...