dataset
stringclasses
6 values
id
stringlengths
12
16
question
stringlengths
4
758
choices
listlengths
4
4
answer
stringclasses
4 values
support
stringlengths
0
7.76k
math_qa
mathqa_03_04401
two trains 200 m and 300 m long run at the speed of 60 km / hr and 40 km / hr respectively in opposite directions on parallel tracks . the time which they take to cross each other is ?
[ "18", "10.9", "10.4", "10.8" ]
A
"relative speed = 60 + 40 = 100 km / hr . = 100 * 5 / 18 = 250 / 9 m / sec . distance covered in crossing each other = 200 + 300 = 500 m . required time = 500 * 9 / 250 = 18 secs answer : a"
openbookqa
obqa_02_03079
If a thing has both seeds and reproductive dust, it is
[ "a producer", "a meat source", "a consumer", "a marine mammal" ]
A
a flower produces pollen and seeds
math_qa
mathqa_03_00972
a person saved $ 10 in buying an item on sale . if he spent $ 600 for the item , approximately how much percent he saved in the transaction ?
[ "8 %", "1.6 %", "2 %", "5 %" ]
B
"actual price = 600 + 10 = $ 610 saving = 10 / 610 * 100 = 100 / 61 = 1.6 % approximately answer is b"
math_qa
mathqa_03_00888
mr . smith calculated the average of 10 3 digit numbers . but due to a mistake he reversed the digits of a number and thus his average increased by 19.8 the difference between the unit digit and hundreds digit of that number is :
[ "2", "6", "5", "3" ]
A
since the average increased by 29.7 and there were a total of 10 numbers , it means the incorrect number was 198 greater than the correct number . say , the correct number was abc ( where a , b and c are the digits of the 3 digit number ) then the incorrect number was cba . 100 c + 10 b + a - ( 100 a + 10 b + c ) = 198...
sciq
sciq_01_06748
Unlike bryophyte and fern spores (which are haploid cells dependent on moisture for rapid development of gametophytes), seeds contain a diploid embryo that will germinate into what?
[ "gametophyte", "ovary", "sperm", "sporophyte" ]
D
Seeds and Pollen as an Evolutionary Adaptation to Dry Land Unlike bryophyte and fern spores (which are haploid cells dependent on moisture for rapid development of gametophytes), seeds contain a diploid embryo that will germinate into a sporophyte. Storage tissue to sustain growth and a protective coat give seeds their...
medmcqa
medmcqa_05_03808
What diameter of cerebellar hematoma will require surgical evacuation
[ "> 0.5 cm", "> 1 cm", "> 2 cm", "> 3 cm" ]
D
Most cerebellar hematomas >3 cm in diameter will require surgical evacuation. If the patient is ale without focal brainstem signs and if the hematoma is <1 cm in diameter, surgical removal is usually unnecessary. Patients with hematomas between 1 and 3 cm require careful observation for signs of impaired consciousness,...
sciq
sciq_01_09476
In gas exchange, oxygen flows into the blood, and what flows out?
[ "liquid dioxide", "carbon monoxide", "carbon dioxide", "naturally dioxide" ]
C
Gas exchange is the movement of oxygen into the blood and carbon dioxide out of the blood.
sciq
sciq_01_04480
Matter is always conserved in what type of reaction?
[ "chemical reaction", "toxic reaction", "developed reaction", "Quick reaction" ]
A
In a chemical reaction, the quantity of each element does not change; there is the same amount of each element in the products as there was in the reactants. This is because matter is always conserved. The conservation of matter is reflected in a reaction’s chemical equation. The same number of atoms of each element ap...
sciq
sciq_01_02663
In a carbon triple bond, how many pairs of electrons are shared?
[ "one", "four", "three", "two" ]
C
Carbon can form single, double, or even triple bonds with other carbon atoms. In a single bond, two carbon atoms share one pair of electrons. In a double bond, they share two pairs of electrons, and in a triple bond they share three pairs of electrons. Examples of compounds with these types of bonds are represented by ...
openbookqa
obqa_02_03556
To pass on heat one might
[ "eat food", "hold hands", "time travel", "fart" ]
B
heat can change the state of matter
openbookqa
obqa_02_03861
a man drives away from his dog, and the dog progressively got smaller in the rear view mirror. what was happening?
[ "the dog was evaporating", "the distance between them remained same", "the distance between them was going down", "the distance between them was going up" ]
D
as distance to an object increases , that object will appear smaller
ARC-Challenge
arc_04_02454
A student uses a pH meter to measure the acidity of a water sample from a lake. For what purpose is the student most likely testing the water?
[ "to learn what organisms could survive in the lake", "to determine the age of the lake", "to understand how people use the lake", "to find out the depth of the lake" ]
A
null
openbookqa
obqa_02_04804
Loose dirt in a garden may be from
[ "creation myths", "moon phases", "buzzards", "voles" ]
D
tunnels in soil loosen that soil
medmcqa
medmcqa_05_02810
Disturbed orientation is seen in:
[ "Schizophrenia", "Neurosis", "Paranoid personality", "Organic mental disorder" ]
D
D i.e. Organic Mental disorder
medmcqa
medmcqa_05_02355
Reducing agent used in lipogenesis is derived from
[ "Pentose phosphate pathway", "Glycolysis", "TCA cycle", "Gluconeogenesis" ]
A
NADPH is involved as donor of reducing equivalents in both the reduction of the 3-ketoacyl and of the 2, 3-unsaturated acyl derivatives. The oxidative reactions of the pentose phosphate are the chief source of the hydrogen required for the reductive synthesis of fatty acids.
medmcqa
medmcqa_05_01254
Reduviid bug is a vector for the transmission of:
[ "Relapsing fever", "Lyme's disease", "Scrub typhus", "Chaga's disease" ]
D
Reduviid bugs(Triatominae): Also known as &;Cone-nose bugs&; or &;kissing bugs&; &;or &;Assassin bugs&; Vectors of Chaga&;s Disease (American Trypanosomiasis- &;Sleeping sickness of America&;), causedby Trypanosoma cruzi Ref: Park 25th edition Pgno: 817
ARC-Easy
arc_04_00065
When light is bounced off a mirror, the light is
[ "reflected.", "refracted.", "absorbed.", "diffracted." ]
A
null
math_qa
mathqa_03_02811
the lowest number which should be added to 5915 so that the sum is exactly divisible by 3 , 5 , 8 and 7 is :
[ "705", "825", "805", "905" ]
C
"l . c . m . of 3 , 5 , 8 and 7 = 840 . on dividing 5915 by 840 , the remainder is 35 . number to be added = ( 840 - 35 ) = 805 . answer : option ' c '"
math_qa
mathqa_03_01531
how many digits are in ( 8 × 10 ^ 8 ) ( 10 × 10 ^ 10 ) ?
[ "20", "25", "26", "27" ]
A
"the question simplfies to ( 8 × 10 ^ 8 ) ( 10 ^ 11 ) = > 8 * 10 ^ 19 = > will contain 19 zeros + 1 digit 8 = > 20 ans a"
sciq
sciq_01_09247
What is the most important source of energy on earth?
[ "the earth's core", "moon", "water", "sun" ]
D
The sunlight that reaches Earth is the planet’s most important source of energy. The energy in sunlight, called solar energy, is electromagnetic energy. This is a form of energy that travels through space in electric and magnetic waves. Solar energy can be used to heat homes and produce electricity in solar cells like ...
ARC-Easy
arc_04_01356
Which statement about all living organisms is true?
[ "They have limbs.", "They produce their own food.", "They breathe air.", "They have at least one cell." ]
D
null
openbookqa
obqa_02_04371
The cell of a plant when photosynthesizing may most require
[ "access to roofless space", "a complete vacuum in space", "a room with blackened windows", "dark basement living quarters" ]
A
plant cells can perform photosynthesis
sciq
sciq_01_11303
What is the practical application of scientific principles and discoveries to develop things that make our lives easier?
[ "component", "experiment", "Movement", "engineering" ]
D
Engineering is the practical application of scientific principles and discoveries to develop things that make our lives easier. Is medicine science or engineering? Justify your answer.
ARC-Easy
arc_04_00441
Timber companies can best manage the number of trees in forests by
[ "converting deforested areas into malls.", "planting trees to replace what they cut down.", "adding pesticides to the soil around the trees.", "removing the tree stumps when trees are cut down." ]
B
null
sciq
sciq_01_05555
Fluid-filled thylakoids are the site of glucose production in the second stage of what process?
[ "birth", "measurements", "glycolysis", "photosynthesis" ]
D
The interior space that surrounds the thylakoids is filled with a fluid called stroma . This is where carbon dioxide is used to produce glucose, the second part of photosynthesis.
ARC-Easy
arc_04_00321
Which of these explains how a trench can form?
[ "two oceanic plates converging", "two continental plates converging", "two continental plates diverging", "two oceanic plates diverging" ]
A
null
sciq
sciq_01_11264
What is the smallest unit of a chemical element called?
[ "nucleus", "cell", "atom", "droplet" ]
C
An atom is the smallest unit of a chemical element . That is, an atom has all the properties of that element. All atoms of the same element have the same number of protons.
ARC-Easy
arc_04_01661
Which statement describes animal embryos?
[ "display all the features of an adult", "represent the earliest stage of development", "have the same number of cells as a fertilized egg", "have half the number of chromosomes as an adult" ]
B
null
math_qa
mathqa_03_00048
8 , 24 , 12 , 36 , 18 , 54 , ( . . . . )
[ "27", "68", "107", "108" ]
A
"8 × 3 = 24 24 ÷ 2 = 12 12 × 3 = 36 36 ÷ 2 = 18 18 × 3 = 54 54 ÷ 2 = 27 answer is a"
ARC-Challenge
arc_04_02869
The gametes of human males and females have the same number of chromosomes. Which best describes what happens to the chromosomes when typical male and female gametes combine to produce offspring?
[ "The chromosomes change shape.", "The number of chromosomes doubles.", "The chromosomes become larger in size.", "The number of chromosomes reduces by half." ]
B
null
sciq
sciq_01_03865
Kepler's laws relate to the motion of what?
[ "continents", "the sun", "oceans", "planets" ]
D
The system is isolated from other masses. This allows us to neglect any small effects due to outside masses. The conditions are satisfied, to good approximation, by Earth’s satellites (including the Moon), by objects orbiting the Sun, and by the satellites of other planets. Historically, planets were studied first, and...
sciq
sciq_01_03613
What is the largest planet in our solar system?
[ "jupiter", "mars", "uranus", "earth" ]
A
Jupiter is the largest planet in our solar system. Jupiter is named for the king of the gods in Roman mythology. The Romans named the largest planet for their most important god. They followed the tradition of the Greeks, who had similarly named the planet Zeus. The Romans built a temple to Jupiter on the hill.
sciq
sciq_01_04158
When a stalactite and stalagmite join together, they form a what?
[ "column", "joint", "cave", "ladder" ]
A
If a stalactite and stalagmite join together, they form a column . One of the wonders of visiting a cave is to witness the beauty of these amazing and strangely captivating structures.
openbookqa
obqa_02_04939
if a place has experienced fog, what could be responsible?
[ "there has been excess condensed vapor", "animals are reproducing currently", "the local deities are angry", "the water lacks oxygen" ]
A
An example of moisture is water vapor in the atmosphere
medmcqa
medmcqa_05_00320
Day 3 serum Estrogen levels to diagnose premature ovarian failure:
[ "<10-20 pg/ ml", "<20-40 pg/ ml", "<60-80 pg /ml", "<40-60 pg /ml" ]
C
Diagnosis of premature ovarian failure: History of amenorrhea in less than 35 years, Day 3 Serum FSH>10-15 miu/ml,LH < 10 IU/L, Day 3 serum estrogen 60-80 pg/ml or less. Anti-mullerian hormone is low, Inhibin is low, Antral follicular count measuring 2-9mm in both the ovariess and number of follicles and size,count les...
openbookqa
obqa_02_00135
will a glacier travel at greater speeds than a sea going vessel?
[ "maybe it moves faster", "this is likely to be false", "all of these", "odds are in its favor" ]
B
a glacier moves slowly
math_qa
mathqa_03_03473
a train 280 m long , running with a speed of 72 km / hr will pass a tree in ?
[ "17 sec", "16 sec", "18 sec", "14 sec" ]
D
"speed = 72 * 5 / 18 = 20 m / sec time taken = 280 * 1 / 20 = 14 sec answer : d"
openbookqa
obqa_02_03518
Which promotes the creation of serotonin?
[ "Jupiter", "Venus", "the Sun", "the Moon" ]
C
sunlight contains ultraviolet light
sciq
sciq_01_00657
When sparks from a steel grinder react with oxygen, what do they form?
[ "steel oxide", "rust", "iron oxide", "spontaneous combustion" ]
C
The sparks from a steel grinder are molten iron. The iron reacts with oxygen to form iron(III) oxide.
openbookqa
obqa_02_04829
Which is likely to be hotter?
[ "steaming coffee", "the ocean", "the forest", "tepid water" ]
A
as the temperature of a liquid increases , the rate of evaporation of that liquid will increase
ARC-Easy
arc_04_01170
Noah studied different systems in the human body. Which best describes a function of veins in the circulatory system?
[ "carrying blood from the body to the heart", "supplying nutrients from the intestines to the body", "carrying carbon dioxide from the body to the lungs", "passing waste materials from the blood to outside the body" ]
A
null
sciq
sciq_01_07222
What type of respiration does not use oxygen?
[ "fermentation", "oxidation", "cellular", "condensation" ]
A
Fermented Foods. Fermentation is a type of respiration that doesn’t use oxygen. Fermentation by bacteria is used in brewing and baking. It is also used to make the foods pictured here.
sciq
sciq_01_00247
The simplest class of organic compounds is the what?
[ "gas", "particles", "hydrocarbons", "Phenols" ]
C
isolating the individual components, preservationists are better able to determine the condition of an object and those books and documents most in need of immediate protection. The simplest class of organic compounds is the hydrocarbons, which consist entirely of carbon and hydrogen. Petroleum and natural gas are comp...
sciq
sciq_01_04797
What heisenberg principle imposes ultimate limits on what is knowable in science?
[ "impossibility principle", "vacuum principle", "certainty principle", "uncertainty principle" ]
D
The value of ħ is not large, so the uncertainty in the position or momentum of a macroscopic object like a baseball is too insignificant to observe. However, the mass of a microscopic object such as an electron is small enough that the uncertainty can be large and significant. It should be noted that Heisenberg’s uncer...
openbookqa
obqa_02_03485
Convection is caused by uneven what?
[ "freezing", "warmness distribution", "frosting", "icing" ]
B
uneven heating causes convection
openbookqa
obqa_02_00243
When any two object strike with each other, the molecules of the outer of the two objects coming in contact could
[ "rot", "quake", "smoke", "freeze" ]
B
tapping two objects together causes the particles in those objects to vibrate
medmcqa
medmcqa_05_03141
Diatoms are seen in
[ "Infanticide", "Drowning", "Hanging", "Mummifications" ]
B
B. i.e. (Drowning) (3.69 - Parikh 6th)DIATOMS - is unicellular algae**, have silicaceous cell wall (Best site of sample - Bone marrow in femur**)* **Since diatoms resist putrefaction, diatom test may have some value in examination of decomposed bodies* The test is negative in dead bodies thrown in water and in dry drow...
sciq
sciq_01_10049
What kind of tool, often based on mathematical equations or computer simulations, helps us understand complex systems?
[ "panels", "levels", "models", "planes" ]
C
Food Chains. These two food chains represent complex systems in nature. They make the systems easier to understand. These are simple conceptual models. Models of very complex systems are often based on mathematical equations or computer simulations.
math_qa
mathqa_03_00855
a reduction of 35 % in the price of apples would enable a man to obtain 42 more for rs . 20 , what is reduced price per dozen ?
[ "1.7", "3.5", "6.3", "7.1" ]
A
"a 20 * ( 35 / 100 ) = 6 - - - 42 ? - - - 12 = > rs . 1.7"
openbookqa
obqa_02_01343
what affects an organisms acquired characteristics?
[ "the moon", "gravity", "its immediate surroundings", "birthday" ]
C
an organism 's environment affects that organism 's acquired characteristics
math_qa
mathqa_03_04613
the sum of the present ages of two persons a and b is 60 . if the age of a is twice that of b , find the sum of their ages 3 years hence ?
[ "58", "59", "62", "66" ]
D
explanation : a + b = 60 , a = 2 b 2 b + b = 60 = > b = 20 then a = 40 . 3 years , their ages will be 43 and 23 . sum of their ages = 43 + 23 = 66 . d )
sciq
sciq_01_00191
Habitat loss, introduced species, overharvesting, and global change are major threats to what?
[ "transportation", "the sun", "the earth's gravity", "biodiversity" ]
D
ARC-Easy
arc_04_00262
After which event will ecological succession most likely happen?
[ "a forest fire", "a thunderstorm", "a high tide", "a lunar eclipse" ]
A
null
openbookqa
obqa_02_01804
One arctic animal, the polar bear may spend their time doing what
[ "racing", "swimming", "creating", "reading" ]
B
arctic animals live in an arctic environment
sciq
sciq_01_04992
Most plant cells have a large central what?
[ "membranes", "vacuole", "loci", "nuclei" ]
B
Most plant cells have a large central vacuole . It can make up as much as 90 percent of a plant cell’s total volume. The central vacuole is like a large storage container. It may store substances such as water, enzymes, and salts. It may have other roles as well. For example, the central vacuole helps stems and leaves ...
math_qa
mathqa_03_03136
the cost of an article was rs . 75 . the cost was first increased by 20 % and later on it was reduced by 20 % . the present cost of the article is :
[ "rs . 72", "rs . 60", "rs . 75", "rs . 76" ]
A
solution : initial cost = rs . 75 after 20 % increase in the cost , it becomes , ( 75 + 20 % of 75 ) = rs . 90 now , cost is decreased by 20 % , so cost will become , ( 90 - 20 % of 90 ) = rs . 72 . so , present cost is rs . 72 . mind calculation method : 75 - - - - - 20 % ↑ - - → 90 - - - - - 20 % ↓ - - - - - → 72 . a...
sciq
sciq_01_04886
Ocean water has what property because water dissolves minerals out of rocks?
[ "salty", "sweet", "muddy", "fizzy" ]
A
Ocean water is salty because water dissolves minerals out of rocks. The ions enter the water. This happens whenever water flows over or through rocks. Much of this water and its minerals end up in the oceans. Minerals dissolved in water form salts. When the water evaporates, it leaves the salts behind. As a result, oce...
sciq
sciq_01_04355
An acellular, external cuticle protects the _________.
[ "stomach", "epidermis", "lungs", "dermis" ]
B
Anatomy The epidermis is protected by an acellular, external cuticle, but this is much thinner than the cuticle found in the ecdysozoans and does not require periodic shedding for growth. Circular as well as longitudinal muscles are located interior to the epidermis. Chitinous hairlike extensions, anchored in the epide...
sciq
sciq_01_10333
If no unbalanced force acts on an object the object remains at constant velocity or what?
[ "constant movement", "rotating", "constant", "at rest" ]
D
If no unbalanced force acts on an object the object remains at constant velocity or at rest.
sciq
sciq_01_05602
Human culture is related to evolutionary theory in the discipline of what?
[ "sociobiology", "ethnology", "astrology", "psychopathology" ]
A
ARC-Easy
arc_04_01534
All of the processes listed below cause changes in Earth's surface. Which of the following is the slowest to change Earth's surface?
[ "earthquake activity", "landslide", "volcanic eruption", "weathering" ]
D
null
sciq
sciq_01_06707
What type of radioactive decay is generally only dangerous when emitted inside the body?
[ "nucleus decay", "variant decay", "ionic decay", "alpha decay" ]
D
All types of radioactive decay pose risks to living things, but alpha decay is the least dangerous. That’s because alpha particles are relatively heavy, so they can travel only a few centimeters through the air. They also are not very penetrating. For example, they can’t pass through a sheet of paper or thin layer of c...
sciq
sciq_01_03105
What is heard when sound waves bounce back from a surface that they can't pass through?
[ "radio", "loop", "echo", "ultrasound" ]
C
Did you ever hear an echo of your own voice? An echo occurs when sound waves bounce back from a surface that they can’t pass through. The woman pictured here is trying to create an echo by shouting toward a large building. When the sound waves strike the wall of the building, most of them bounce back toward the woman, ...
ARC-Challenge
arc_04_02867
A tree frog with which characteristic is more likely to survive than other tree frogs?
[ "a preference for rare insects", "an unusually high-pitched call", "skin that resembles tree leaves", "a body larger than other tree frogs" ]
C
null
sciq
sciq_01_10804
An obstacle or opening that is shorter than the wavelength causes greater diffraction of what?
[ "ranges", "waves", "particles", "tides" ]
B
An obstacle or opening that is shorter than the wavelength causes greater diffraction of waves.
openbookqa
obqa_02_04485
Which likely aids in plant reproduction?
[ "the gravity on Mars", "the influx of human pollution", "the cooking of rice pilaf", "a family of badgers hunting and gathering" ]
D
plant reproduction requires pollination
ARC-Challenge
arc_04_02340
An increase in phosphate levels in a lake increases the population of algae in the lake. Increased algae blocks sunlight into the lake and results in a decrease in dissolved oxygen in the lake's water. Which of the following should be expected as a result?
[ "Plant populations in the lake increase.", "More predatory birds feed on lake animals.", "Phosphate levels in the lake decrease.", "Fish populations in the lake decline." ]
D
null
openbookqa
obqa_02_02887
An example of an instinctive behavior is
[ "doing a cartwheel outside", "singing on a stage", "eating a large pizza", "a mother feeding the kids" ]
D
An example of an instinctive behavior is a baby bird pecking at its shell to hatch
sciq
sciq_01_09341
What process allows plants to convert light energy into sugars and energy for food?
[ "photosynthesis", "glycolysis", "digestion", "respiration" ]
A
Chemical reactions are occurring all around you. Plants use sunlight to drive their photosynthetic process and produce energy. Cars and other vehicles burn gasoline in order to power their engines. Batteries use electrochemical reactions to produce energy and power many everyday devices. Many chemical reactions are goi...
sciq
sciq_01_09206
How do you decrease errors in an experiment?
[ "write about it", "ask God", "take many measurements", "decrease measurements" ]
C
Scientists make many measurements during experiments. Humans and equipment can make mistakes. Errors are often unavoidable. This is called experimental error . Errors may be due to the equipment being used. In this case, the numbers may be always skewed in one direction. For example, a scale may always measure one-half...
ARC-Easy
arc_04_00890
A drinking water reservoir for a small town develops a blue-green algae bloom. The town hires a company to eliminate the problem. Which of the following should the company investigate first as a likely source of the problem?
[ "a pit where granite is ground up into gravel", "a neighborhood where lawn chemicals are used", "a junkyard where old cars are salvaged for parts", "a grain elevator where corn and soybeans are stored" ]
B
null
openbookqa
obqa_02_01162
Which example best shows the effect of vibration on matter?
[ "a paper airplane", "a harpsicord", "a pillow", "box of candy" ]
B
as the amount that matter vibrates increases , sound produced increases
math_qa
mathqa_03_03365
of the final grades received by the students in a certain math course , 1 / 5 are a ' s , 1 / 4 are b ' s , 1 / 2 are c ' s , and the remaining 25 grades are d ' s . what is the number of students in the course ?
[ "80", "110", "160", "500" ]
D
"we start by creating a variable for the total number of students in the math course . we can say : t = total number of students in the math course next , we can use variable t in an equation that we translate from the given information . we are given that , of the final grades received by the students in a certain mat...
sciq
sciq_01_06451
What term is used to describe molecules that contain carbon-nitrogen bonds?
[ "ions", "nitrites", "compounds", "amines" ]
D
Amines are molecules that contain carbon-nitrogen bonds. The nitrogen atom in an amine has a lone pair of electrons and three bonds to other atoms, either carbon or hydrogen. Various nomenclatures are used to derive names for amines, but all involve the class-identifying suffix –ine as illustrated here for a few simple...
sciq
sciq_01_01762
Saliva can carry the hiv virus, but it won't spread it, unless the saliva gets into what?
[ "liver", "kidneys", "lungs", "bloodstream" ]
D
HIV spreads through contact between an infected person’s body fluids and another person's bloodstream or mucus membranes, which are found in the mouth, nose, and genital areas. Body fluids that may contain HIV are blood, semen, vaginal fluid, and breast milk. The virus can spread through sexual contact or shared drug n...
sciq
sciq_01_09950
What force holds together both types of star clusters?
[ "gravity", "weight", "magnetism", "inertia" ]
A
Star clusters are small groups of stars. A star cluster is smaller than a galaxy. There are two main types, open clusters and globular clusters. Both types are held together by gravity.
medmcqa
medmcqa_05_03585
The frequently occuring value in a data is
[ "Median", "Mode", "Standard detion", "Mean" ]
B
Mode is the commonly occurring value in the distribution of data . Advantages : easy to understand and is not affected by extreme values Disadvantages : exact location is unceain and often not clearly defined Ref : Park&;s Textbook of Preventive and Social Medicine; 23rd edition - Pgno. 847
medmcqa
medmcqa_05_01209
Paralytic ileus caused by
[ "Hypokalemia", "Hypoglycemia", "Hyperkalemia", "Hypercalcemia" ]
A
Hypokalemia leads to decreased smooth muscle contraction leading to decreased peristalsis and thus paralytic ileus. Pg NO.1296 BAILEY 27TH EDITION
medmcqa
medmcqa_05_03943
Increasing severity of mental retardation of male members over generations is a result of -
[ "Mitochondrial DNA mutation", "Frameshift mutation", "Y linked disorder", "Trinucleotide repeat mutation" ]
D
Ans. (d) Trinucleotide repeat mutation(Ref: Robbins 9th/pg 168-171; 8th/pg 168-171)Increasing severity of mental retardation of male members over generations is a result of "anticipation", seen in disorders caused by Trinucleotide repeat mutation. Eg Fragile X syndrome
math_qa
mathqa_03_00644
xavier starts from p towards q at a speed of 60 kmph and after every 12 mins increases his speed by 10 kmph . if the distance between p and q is 60 km , then how much time does he take to cover the distance ?
[ "48", "59", "60", "56" ]
A
"first 12 min = 60 * 12 / 60 = 12 km 2 nd 12 min = 70 * 12 / 60 = 14 km 3 rd 12 min = 80 * 12 / 60 = 16 km 4 th 12 min = 90 * 12 / 60 = 18 km total time 12.4 = 48 min a"
medmcqa
medmcqa_05_02356
Morrison's pouch is -
[ "Right subphrenic space", "Right subhepatic space", "Left subhepatic space", "Left subphrenic space" ]
B
Ans. is 'b' i.e., Right subhepatic Subphrenic / Subhepatic spaces o These spaces are just below the diaphragm in relation to the liver. These space are : Intraperitoneal spaces are:- Left anterior space (left subphrenic space). Left posterior space (left subhepatic space or lesser sac). Right anterior space, (right sub...
math_qa
mathqa_03_00386
when a person aged 39 is added to a group of n people , the average age increases by 2 . when a person aged 15 is added instead , the average age decreases by 1 . what is the value of q ?
[ "7", "8", "9", "10" ]
A
"a simple and elegant solution . as addition of 39 , shifts mean by 2 , and addition of 15 , shifts mean by 1 to the other side , we have the mean lying between 3915 , and in a ratio of 2 : 1 39 - 15 = 24 24 divide by 3 is 8 . meaning mean of the n terms is 15 + 8 = 39 - 16 = 23 now , from first statement , when a pers...
ARC-Easy
arc_04_01543
In a city, the daily high and low 16 temperatures for a month are best represented by which of the following?
[ "flow chart", "line graph", "pictograph", "pie chart" ]
B
null
medmcqa
medmcqa_05_03879
The karyotype of a patient with Androgen Insensitivity Syndrome is:
[ "46XX", "46XY", "47XXY", "45X0" ]
B
Androgen Insensitivity Syndrome is the largest single entity that leads to 46, XY undermasculinization. AIS is divided into three categories that are differentiated by the degree of genital masculinization: Complete Androgen Insensitivity Syndrome (CAIS) is indicated when the external genitalia is that of a normal fema...
ARC-Challenge
arc_04_02201
Some animals are very rare. For example, there are very few Siberian tigers. If the only Siberian tigers left are female, what will most likely happen?
[ "The females will find another type of male animal to mate with and produce more Siberian tigers.", "The females will mate with each other and produce more Siberian tigers.", "The females will only be able to produce female Siberian tigers.", "The females will not be able to produce more Siberian tigers, and ...
D
null
sciq
sciq_01_03491
A plant that forms special tissues for storing water in an arid climate is an example of the plant evolving what?
[ "consciousness", "divergence", "additions", "adaptations" ]
D
Organisms evolve adaptations that help them survive in the climate of the biome where they live. For example, in biomes with arid climates, plants may have special tissues for storing water (see Figure below ). The desert animals pictured in Figure below also have adaptations for a dry climate.
sciq
sciq_01_08560
Hair and nails are made of what?
[ "keratin", "proteins", "cellulose", "chromatin" ]
A
Hair and nails are made of keratin, a tough protein.
openbookqa
obqa_02_00219
A microscope can be placed against the sun and
[ "burn an ant in the light's path", "Provide shade on a hot day", "Take a close up picture of the ground", "Show how many wrinkles I have on my skin" ]
A
refraction is when light bends
medmcqa
medmcqa_05_00831
Side effects of magnesium sulfate includes
[ "Hypotonia", "Anuria", "Coma", "Pulmonary edema" ]
A
Side effects flushing perspiration headache muscle weakness rarely pulmonary edema neonatal side effects lethargy hypotonia respiratory depression D.C.DUTTA&;S TEXTBOOK OF OBSTETRICS,Pg no:508,7th edition
sciq
sciq_01_07142
Which gas moves from the blood in the capillaries into the air?
[ "oxygen", "carbon monoxide", "carbon dioxide", "nitrogen" ]
C
Unlike oxygen, carbon dioxide is more concentrated in the blood in the capillaries surrounding the alveoli than it is in the air inside the alveoli. Therefore, carbon dioxide diffuses in the opposite direction. It moves out of the blood and into the air.
openbookqa
obqa_02_01526
What goes to a place that has a negative impact on the environment?
[ "garbage trucks", "trains", "mail trucks", "motorcycles" ]
A
landfills have a negative impact on the environment
sciq
sciq_01_02259
What is the region in the center back of the eye that is responsible for acute vision?
[ "cornea", "pupil", "fovea", "lens" ]
C
The fovea is the region in the center back of the eye that is responsible for acute vision. The fovea has a high density of cones. When you bring your gaze to an object to examine it intently in bright light, the eyes orient so that the object’s image falls on the fovea. However, when looking at a star in the night sky...
sciq
sciq_01_03833
Water pollution occurs when chemicals, sewage, trash, or heat enter what?
[ "natural resources", "air resources", "water resources", "renewable resources" ]
C
Water pollution occurs when chemicals, sewage, trash, or heat enter water resources. Water pollution is threatening the limited supply of clean, fresh water that human beings and other living things depend on.
math_qa
mathqa_03_02955
milk contains 5 % water . what quantity of pure milk should be added to 10 litres of milk to reduce this 2 % ?
[ "15 litres", "16 litres", "17 litres", "25 litres" ]
A
present ration of milk to water is 95 : 5 amount of milk is 10 litres hence , pure milk content is 9.5 litre and water content is 0.5 litres now , we should not disturb the water content so , 0.5 litres of water is equivalent to 2 % so 100 % mixture is : ( 0.5 / 2 ) * 100 = 25 litre thus , milk should be added = 25 - 1...
openbookqa
obqa_02_02026
Amphibians such as frogs start their lives in eggs in
[ "the pond out front", "in a camp fire", "in the turn of the air", "dark under belly of grass" ]
A
amphibians hatch from eggs
ARC-Challenge
arc_04_03145
An atom becomes an ion with a -1 charge because the atom
[ "gains one electron.", "loses one electron.", "gains one proton.", "loses one proton." ]
A
null
sciq
sciq_01_08805
What simple sugar is the cell's primary source of energy?
[ "glucose", "chloride", "carbon", "nicotine" ]
A
Molecular formulas tell us how many atoms of each element are present in one molecule of a molecular compound. In many cases, the molecular formula is the same as the empirical formula. For example, the molecular formula of methane is CH 4 , and because 1:4 is the smallest whole-number ratio that can be written for thi...
sciq
sciq_01_09681
The liver has three main components: hepatocytes, bile canaliculi, and this?
[ "tissue sinusoids", "hepatic sinusoids", "coronary sinusoids", "blood sinusoids" ]
B
Histology The liver has three main components: hepatocytes, bile canaliculi, and hepatic sinusoids. A hepatocyte is the liver’s main cell type, accounting for around 80 percent of the liver's volume. These cells play a role in a wide variety of secretory, metabolic, and endocrine functions. Plates of hepatocytes called...
medmcqa
medmcqa_05_00364
Wear and tear pigment in the body refers to-
[ "Lipochrome", "Melanin", "Anthracotic pigment", "Haemosiderin" ]
A
Ans. is 'a' i.e., Lipochrone
math_qa
mathqa_03_03215
how long does a train 110 m long traveling at 60 kmph takes to cross a bridge of 390 m in length ?
[ "18.9 sec", "88.9 sec", "22.9 sec", "30.00 sec" ]
D
"d = 110 + 390 = 500 m s = 60 * 5 / 18 = 50 / 3 t = 500 * 3 / 50 = 30 sec answer : d"