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ARC-Challenge
arc_04_02623
James put some water in a pan. He put the pan on a stove and turned the stove on low. What will happen to the water?
[ "The water will melt.", "The water will evaporate.", "The water will form a solid.", "The water will condense into tiny droplets." ]
B
null
math_qa
mathqa_03_03235
if log 2 = 0.3010 and log 3 = 0.4771 , the value of log 5 ( 512 )
[ "3.876", "2.967", "2.87", "3.912" ]
A
"log 5 ( 512 ) = log ( 512 ) / log 5 = log 2 ^ 9 / log ( 10 / 2 ) = 9 log 2 / ( log 10 - log 2 ) = ( 9 x 0.3010 ) / ( 1 - 0.3010 ) = 2.709 / 0.699 = 2709 / 699 = 3.876 answer is a ."
openbookqa
obqa_02_00288
A beaver is building a home in a river, and that eventually blocks up the river, giving the beaver a nice home. A side effect of the beaver's new home is
[ "a pool", "freshwater body", "a mountain", "an ocean" ]
B
damming a river can cause a lake to form
openbookqa
obqa_02_04567
You are unable to naturally make yourself taller because height is determined by
[ "parents", "Cookies", "Space", "Eggshells" ]
A
height is an inherited characteristic
openbookqa
obqa_02_03600
A thermal conductor is made of
[ "often metallic", "types of rubber", "types of branches", "electrodes" ]
A
when a cooler object touches a warmer object , thermal conduction occurs
medmcqa
medmcqa_05_04891
Falangais-
[ "Beating on soles with blunt object", "Beating on soles with palms", "Beating on the abdomen", "Suspension by wrists" ]
A
Ans. is 'a' i.e., Beating on soles with blunt objectMethods of torture:o BeatingFalanga/ Falaka/ Baatinada- beating on soles of feet with blunt objectTelefono- beating on ears with both palmso SuspensionLa- Bandera- suspension by wristMercelago- suspension by ankleso Forced posturePlanton- prolonged standing
sciq
sciq_01_03240
A machine is any device that makes work easier by doing what?
[ "removing barriers", "changing a force", "changing molecules", "moving things" ]
B
A machine is any device that makes work easier by changing a force. When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force. Recall that work equals force multiplied by distance:.
sciq
sciq_01_03778
What two things collide to cause gas pressure?
[ "gas particles and an electron", "gas particles and an object", "gas particles and a wave", "light particles and an object" ]
B
Gas pressure is the result of collisions between gas particles and an object.
sciq
sciq_01_08591
What is the simplest type of carbon-based compounds?
[ "graphite", "particles", "hydrocarbons", "Buckminsterfullerine" ]
C
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. The size of hydrocarbon molecules influences ...
sciq
sciq_01_06856
What do you call the unhealthy synthetic lipids created when unsaturated fatty acids are artificially manufactured to have straight chains?
[ "polyunsaturated fats", "safflower acids", "trans fatty acids", "omega-3 fatty acids" ]
C
Unsaturated fatty acids occur naturally in the bent shapes shown in Figure above . However, unsaturated fatty acids can be artificially manufactured to have straight chains like saturated fatty acids. Called trans fatty acids , these synthetic lipids were commonly added to foods until it was found that they increased t...
openbookqa
obqa_02_03853
You may need a raft after a
[ "television broadcast", "drought", "meteor shower", "deluge" ]
D
heavy rains cause flooding
medmcqa
medmcqa_05_00487
Cheiloscopy is the study of prints of-
[ "Foot", "Fingers", "Palate", "Lips" ]
D
Cheiloscopy (queiloscopy) is the study of lip prints.
sciq
sciq_01_09079
What process determines which of two fossils is older or younger than the other?
[ "curve dating", "relative dating", "differential dating", "difference dating" ]
B
Relative dating determines which of two fossils is older or younger than the other, but not their age in years. Relative dating is based on the positions of fossils in rock layers. Lower layers were laid down earlier, so they are assumed to contain older fossils. This is illustrated in Figure below .
sciq
sciq_01_03330
Any sample of matter that has the same physical and chemical properties throughout the sample is called what?
[ "element", "substance", "molecule", "type" ]
B
Elements and Compounds Any sample of matter that has the same physical and chemical properties throughout the sample is called a substance. There are two types of substances. A substance that cannot be broken down into chemically simpler components is an element. Aluminum, which is used in soda cans, is an element. A s...
openbookqa
obqa_02_00646
An animal's brain
[ "acts as a conduit for the lungs", "acts as a command base for the body", "lacks the ability to use spacial reasoning", "only assists in movements" ]
B
an animal 's brain controls that animal
openbookqa
obqa_02_03470
After seeing her give birth, the zookeepers discovered that Harry the ____ was actually a girl.
[ "hen", "hotcake", "healfish", "hare" ]
D
mammals give birth to live young
math_qa
mathqa_03_01575
a man walking at a rate of 10 km / hr crosses a bridge in 3 minutes . the length of the bridge is ?
[ "500", "650", "250", "111" ]
A
"speed = 10 * 5 / 18 = 50 / 18 m / sec distance covered in 5 minutes = 50 / 18 * 5 * 60 = 500 m answer is a"
medmcqa
medmcqa_05_02922
Heavy chain of IgA is ?
[ "Gamma", "Mu", "Delta", "Alpha" ]
D
Ans. is 'd' i.e., Alpha Ig G y (gamma)Ig Aa (alpha)IgM 1.1 (mu)Ig D(delta)Ig E e (epsilon)
math_qa
mathqa_03_03469
a clock store sold a certain clock to a collector for 30 percent more than the store had originally paid for the clock . when the collector tried to resell the clock to the store , the store bought it back at 60 percent of what the collector had paid . the shop then sold the clock again at a profit of 90 percent on its...
[ "$ 1010.46", "$ 505.23", "$ 2020.92", "$ 800.46" ]
A
"now , in the question above , lets say the original cost of the clock to store was c $ and then it sold the same to the collector at 30 % profit . this means the clocks ' selling price was c ( 1.3 ) and this becomes cost price for the collector . now , when the collector tries to sell the same clock to the store , the...
medmcqa
medmcqa_05_01462
IPC 82 states that: child cannot be punished under what age -
[ "5yrs", "8yrs", "7yrs", "lOyrs" ]
C
Ans. is 'c' i.e., 7yrs o Section 82 I.P.C.: Criminal responsibility is any act which is done by a child under seven years of age is not an offence.Section of IPCRelated with82A child under the age of seven is incapable of committing an offence. This is so because action alobe does not amount to guilt unless if is accom...
ARC-Easy
arc_04_01304
A condition in bees called "colony collapse disorder" occurs when worker bees leave the hive to collect nectar and never return. How would a decline in the bee population most likely affect a farm ecosystem?
[ "There would be a decrease in soil thickness.", "There would be a decline in fruit production.", "There would be an increase in plant diseases.", "There would be an increase in insect pest populations." ]
B
null
openbookqa
obqa_02_03254
The moon reflects rays of sun from our
[ "red giant", "jupiter", "yellow dwarf", "whit dwarf" ]
C
the sun is a source of light called sunlight
math_qa
mathqa_03_01984
the total number of students in grades 1 and 2 is 30 more than the total number of students in grades 2 and 5 . how much lesser is the number of students in grade 5 as compared to grade 1 ?
[ "20", "30", "10", "40" ]
B
( grade 1 + grade 2 ) - ( grade 2 + grade 5 ) = 30 grade 1 - grade 5 = 30 answer : b
math_qa
mathqa_03_03981
what is difference between biggest and smallest fraction among 2 / 3 , 3 / 4 , 4 / 5 and 5 / 7
[ "2 / 15", "3 / 5", "1 / 6", "1 / 7" ]
A
explanation : 2 / 3 = . 66 , 3 / 4 = . 75 , 4 / 5 = . 8 and 5 / 7 = . 71 so biggest is 4 / 5 and smallest is 2 / 3 their difference is 4 / 5 - 2 / 3 = 2 / 15 option a
math_qa
mathqa_03_04460
the smallest number which when diminished by 7 , is divisible by 12 , 16 , 18 , 21 and 28 is
[ "1008", "1015", "1022", "1032" ]
B
"solution required numbers = ( l . c . m of 12 , 16,18 , 21,28 ) + 7 ‹ = › 1008 + 7 = 1015 . answer b"
ARC-Easy
arc_04_00589
Atmospheric greenhouse gases help heat the atmosphere by
[ "increasing the amount of solar radiation reaching Earth.", "storing energy produced by human activity.", "absorbing infrared radiation released by Earth.", "increasing the average density of air." ]
C
null
medmcqa
medmcqa_05_03200
Femoral hernia lies:
[ "Medial to the pubic tubercle", "Lateral and below pubic tubercle", "Through deep inguinal ring.", "Through Hasselbach's triangle." ]
B
Ans: b (Lateral and below pubic tubercle) Ref: Bailey & love, 24th ed, p. 1281-1282FEMORAL HERNIA* Third most common type of primary hernia.* 20 % of hernia in females and 5% in men.* Most liable to become strangulated because of narrowness of the neck of the sac and rigidity of the femoral ring.* Strangulation is the ...
sciq
sciq_01_01015
What is biomass made into fuel called?
[ "toxic fuel", "benign fuel", "bio fuel", "renewable fuel" ]
C
More recently, people have learned to process biomass to make fuel. This is called biofuel . Biofuel is created from crops, such as corn or algae. Biofuel is unique among renewable energy sources. This is because it is liquid. Unlike solar energy, for example, biofuels can be used in a car ( Figure below ). Biofuels bu...
medmcqa
medmcqa_05_04540
The peak level of chorionic gonadotropin in normal pregnancy occurs at :
[ "30 -- 40 days", "60 -- 70 days", "10 -- 20 days", "100 -- 110 days" ]
B
60 -- 70 days
ARC-Easy
arc_04_01118
Which of these geographic features most directly influences the climate of Nevada by limiting the amount of water vapor that can reach the state and fall as rain?
[ "Pacific Ocean", "Colorado River", "Sierra Nevada Mountains", "Columbia River Basin" ]
C
null
openbookqa
obqa_02_03279
One way to recycle paper is by using it to
[ "build oceans", "build spaceships", "wipe grime", "build cars" ]
C
paper is recyclable
openbookqa
obqa_02_04301
When you scream in an empty room, you hear an echo due to the noise
[ "eating", "bouncing a ball", "nothing", "bouncing off stuff" ]
D
echo is when sound reflects off of a surface
sciq
sciq_01_06409
What characteristic of particles determines how they are carried by flowing water?
[ "density", "texture", "color", "size" ]
D
The size of particles determines how they are carried by flowing water. This is illustrated in Figure below .
openbookqa
obqa_02_02345
Which of the following creatures would eat dandelions?
[ "bald eagles", "meadow voles", "horse flies", "house cats" ]
B
meadow voles eat plants
medmcqa
medmcqa_05_01648
Nicoladoni sign is also known as
[ "Branham sign", "Murray sign", "Frei's sign", "Darrier's sign" ]
A
In medicine, the Nicoladoni sign, also Branham sign and Nicoladoni-Israel-Branham sign, is the slowing of the hea rate in response to (manual) compression of an aeriovenous fistula. Robbins 9 th edition page no. 365 onwards
ARC-Easy
arc_04_01986
Which event is most likely to increase the genetic variation in a population of organisms?
[ "improved hunting techniques", "greater environmental stress", "increased immigration", "introduced predators" ]
C
null
math_qa
mathqa_03_04371
find the principal which yields a simple interest of rs . 20 and compound interest of rs . 21 in two years , at the same percent rate per annum ?
[ "rs . 520", "rs . 480", "rs . 420", "rs . 200" ]
D
"explanation : si in 2 years = rs . 20 , si in 1 year = rs . 10 ci in 2 years = rs . 21 % rate per annum = [ ( ci – si ) / ( si in 1 year ) ] * 100 = [ ( 21 – 20 ) / 20 ] * 100 = 5 % p . a . let the principal be rs . x time = t = 2 years % rate = 5 % p . a . si = ( prt / 100 ) 20 = ( x * 5 * 2 ) / 100 x = rs . 200 answ...
medmcqa
medmcqa_05_00057
A young patient presents to the ophthalmology clinic with loss of central vision. There is no obvious family history. ERG and EOG were observed to be normal. Which of the following is the most likely diagnosis?
[ "Stargardt's disease", "Best's Vitelliform Dystrophy", "Retinitis Pigmentosa", "Cone- Rod Dystrophy" ]
A
Loss of central vision with a normal ERG and EOG is consistent with a diagnosis of Stargardt's disease. Stargardt's disease is an autosomal recessive disorder and hence a negative family history is not uncommon.
medmcqa
medmcqa_05_01221
Most common malignant tumour of parotid is?
[ "Adenoid Cystic", "Warthin tumour", "Mucoepidermoid carcinoma", "Adenocarcinoma" ]
C
Ans. is 'c' i.e., Mucoepidermoid carcinoma - o Repeat from previous sessions
openbookqa
obqa_02_04910
A wire can be caused to heat up when what kind of current flows through it?
[ "wind", "rocky", "water", "zapping power" ]
D
electrical current running through a wire causes that wire to heat up
medmcqa
medmcqa_05_00885
Menkes kinky hair disease is due to deficiency of :
[ "Copper", "Iodine", "Iron", "Selenium" ]
A
Menkes disease is an X - linked disorder due to deficiency of Copper.
math_qa
mathqa_03_03138
tickets numbered from 1 to 27 are mixed and then a ticket is selected randomly . what is the probability that the selected ticket bears a number which is a multiple of 3 ?
[ "1 / 3", "2 / 5", "3 / 10", "3 / 7" ]
A
"here , s = [ 1 , 2 , 3 , 4 , … . , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ] let e = event of getting a multiple of 3 = [ 3 , 6 , 9 , 12 , 15 , 18 , 21 , 24 , 27 ] p ( e ) = n ( e ) / n ( s ) = 9 / 27 = 1 / 3 the answer is a ."
ARC-Easy
arc_04_00438
Jonny climbed an apple tree. How are Jonny and the apple tree similar to each other?
[ "Both are made of cells.", "Both take in carbon dioxide.", "Both get nutrients directly from soil.", "Both get energy from other organisms." ]
A
null
openbookqa
obqa_02_04210
When the moon, sun, and earth line up, tides are at their
[ "lower", "increased", "gone away", "just okay" ]
B
the phases of the Moon change the appearance of the Moon
openbookqa
obqa_02_01168
Leaving coconut oil out on a counter, as the day grows hotter, what happens to the oil?
[ "changes from solid to wet", "it hardens up a lot", "it begins to rot", "it needs to be refrigerated" ]
A
as temperature increases , the ability of that liquid to dissolve solids will increase
sciq
sciq_01_03221
What magnetism is produced by electricity?
[ "electromagnetism", "diffusion", "excitation", "Charges" ]
A
Magnetism produced by electricity is called electromagnetism . Today, electromagnetism is used in many electric devices. However, until electromagnetism was discovered, scientists thought that electricity and magnetism were unrelated. A Danish scientist named Hans Christian Oersted (pictured in the Figure below ) chang...
math_qa
mathqa_03_03220
a certain industrial loom weaves 0.132 meters of cloth every second . approximately how many seconds will it take for the loom to weave 15 meters of cloth ?
[ "114", "115", "116", "117" ]
A
"let the required number of seconds be x more cloth , more time , ( direct proportion ) hence we can write as ( cloth ) 0.132 : 15 : : 1 : x = > 0.132 * x = 15 = > x = 15 / 0.132 = > x = 114 answer : a"
math_qa
mathqa_03_03429
how long will a boy take to run round a square field of side 50 meters , if he runs at the rate of 9 km / hr ?
[ "80 sec", "45 sec", "1 min", "32 sec" ]
A
"speed = 9 km / hr = 9 * 5 / 18 = 5 / 2 m / sec distance = 50 * 4 = 200 m time taken = 200 * 2 / 5 = 80 sec answer is a"
openbookqa
obqa_02_01179
When the old man was much younger, he still had
[ "brown eyes", "baldness", "gray hair", "wrinkled skin" ]
A
eye color is an inherited characteristic
sciq
sciq_01_06768
What is the term for the complete set of genes and alleles within a population?
[ "the ancestral pool", "the chromosomal pool", "the biodiversity pool", "the gene pool" ]
D
Since natural selection acts on the phenotype, if an allele causes death in a homozygous individual, aa , for example, it will not cause death in a heterozygous Aa individual. These heterozygous Aa individuals will then act as carriers of the a allele, meaning that the a allele could be passed down to offspring. People...
medmcqa
medmcqa_05_04013
Tangier's disease is characterized by:
[ "Low or absence of HDL", "Low LDL concentration", "Raised chylomicrons", "Deficiency of LPL" ]
A
Tangier's disease/ Familial alpha-lipoprotein deficiency/Hypo alpha lipoproteinemia. Defect in ABC-A 1 receptors which helps in giving cholesterol from peripheral tissue to HDL. HDL is not properly formed- HDL | Other lipoproteins are normal. | Apo A1. Cholesterol accumulates in reticulo endothelial system C/F : Periph...
medmcqa
medmcqa_05_04931
In tetany the increased membrane excitability is caused by:
[ "Decreased release of inhibitory neurotransmitter from nerve terminals", "Depolarization of the nerve and muscle membranes", "Spontaneous release of calcium from the sarcoplasmic reticulum", "Activation of sodium channels at more negative membrane potentials" ]
B
Membrane excitability is related to the ease with which depolarization opens Na+ channels. The opening of the Na+ channel in response to depolarization is, in pa, related to the extracellular Ca2+ concentration; the lower the extracellular Ca2+ concentration, the easier it is for Na + channels to open when the membrane...
sciq
sciq_01_10144
What are the poles labeled?
[ "east and west", "north and south", "southwest and south", "west and south" ]
B
sciq
sciq_01_02314
Moist skin distinguishes frogs from what animal with dry, bumpy skin?
[ "turtles", "snakes", "toads", "newts" ]
C
Although there is actually little difference between toads and frogs, this animal would most often be called a toad. Frogs have moist skin, while toads have dry, bumpy skin.
sciq
sciq_01_06147
What form when water vapor condenses in the air around specs of matter?
[ "humidity", "clouds", "condensation", "storms" ]
B
Clouds form when water vapor condenses in the air around specs of matter. Clouds are classified on the basis of where and how they form. Types of clouds include cirrus, stratus, and cumulus clouds.
sciq
sciq_01_09451
What are single-celled or colonial organisms that do not have membranebound nuclei?
[ "prokaryotes", "eukaryotes", "arthropods", "viruses" ]
A
Watch this video (http://openstaxcollege. org/l/rotating_DNA) that animates the three-dimensional structure of the DNA molecule shown in Figure 1.15. Some cells contain aggregates of macromolecules surrounded by membranes; these are called organelles. Organelles are small structures that exist within cells. Examples of...
medmcqa
medmcqa_05_00000
Burn by moist heat is known as:
[ "Ordinary burn", "Scar burn", "Scalds burn", "Hot burn" ]
C
Burns may be classified as: Ordinary burns caused by dry heat. Scalds caused by moist heat. Chemical burns caused by strong acid or base. Electric burns. Radiation bums. Cold burns.
openbookqa
obqa_02_02337
Which object is least likely to have any light pass through it?
[ "a dog", "a plastic bottle", "a prism", "a window" ]
A
no light shines through an opaque object
sciq
sciq_01_06038
Genetic disorders are diseases caused by what?
[ "traits", "mutations", "environment", "lesions" ]
B
Sequencing the human genome has increased our knowledge of genetic disorders. Genetic disorders are diseases caused by mutations. Many genetic disorders are caused by mutations in a single gene. Others are caused by abnormal numbers of chromosomes.
openbookqa
obqa_02_03491
Transpiration occurs in
[ "the fruit of a pear tree", "the seeds of a tree", "the flat appendages on organisms that give off oxygen", "the lungs of a dog" ]
C
transpiration usually happens in the leaves of a plant
sciq
sciq_01_09808
What is the largest mammal on earth?
[ "giraffe", "water buffalo", "blue whale", "tiger shark" ]
C
Biological organization exists at all levels in organisms. It can be seen at the smallest level, in the molecules that make up such compounds as DNA and proteins, to the largest level, in an organism such as a blue whale, the largest mammal on Earth. Similarly, single celled prokaryotes and eukaryotes show order in the...
math_qa
mathqa_03_04963
at a certain company , two - thirds of the employees had cell phones and two - fifths had pagers . if one - third of the employees had neither cell phones nor pagers then what fraction of the employees had both cell phones and pagers ?
[ "7 / 5", "6 / 11", "2 / 5", "1 / 3" ]
C
let there be 15 employees cell phone = 10 pagers = 6 neither pager nor cell phone = 5 so , 10 = 10 + 6 - x or , x = 6 so , fraction of the employees had both cell phones and pagers = 6 / 15 = > 2 / 5 answer : c
ARC-Easy
arc_04_01823
Some of the thermal structure of Earth is the result of a combination of chemical composition, temperature, and pressure. Which is a boundary that best demonstrates a contact point between layers having relatively the same temperature and chemical composition?
[ "lithosphere and mesosphere", "inner core and outer core", "outer core and mantle", "mantle and crust" ]
B
null
sciq
sciq_01_09573
The anterior muscles of the neck facilitate swallowing and what else?
[ "speech", "hearing", "perspiration", "crying" ]
A
Figure 11.13 Muscles of the Anterior Neck The anterior muscles of the neck facilitate swallowing and speech. The suprahyoid muscles originate from above the hyoid bone in the chin region. The infrahyoid muscles originate below the hyoid bone in the lower neck.
sciq
sciq_01_06582
White light is a mixture of all wavelengths of what?
[ "visible light", "infrared radiation", "x-rays", "gamma radiation" ]
A
sciq
sciq_01_03494
What organ do mammals have that is exceptionally large for their body size?
[ "brain", "heart", "liver", "lungs" ]
A
Cerebral Cortex Compared to other vertebrates, mammals have exceptionally large brains for their body size. An entire alligator’s brain, for example, would fill about one and a half teaspoons. This increase in brain to body size ratio is especially pronounced in apes, whales, and dolphins. While this increase in overal...
openbookqa
obqa_02_03396
if a student asked a teacher about the size of a certain item, what could be an indicator?
[ "the volume of the item", "the color of the item", "the luster of the item", "the depth of the item" ]
A
the volume of an object can be used to describe the size of that object
sciq
sciq_01_02873
What is the name of the chart that allows you to easily determine the expected percentage of different genotypes in the offspring of two parents?
[ "punnett square", "Trafalgar Square", "DNA helix", "periodic square" ]
A
A Punnett square is a chart that allows you to easily determine the expected percentage of different genotypes in the offspring of two parents. An example of a Punnett square for pea plants is shown in Figure below . In this example, both parents are heterozygous for flower color ( Bb ). The gametes produced by the mal...
sciq
sciq_01_07359
What ear structure has three fluid filled ducts, including the organ of corti, where sound waves in air go to vibration?
[ "saccule", "utricle", "semicirciular canal", "cochlea" ]
D
Sensory systems deformed by gelatinous membrane. Vestibular apparatus, gives us perception of gravity and movement. Due to physical response, not chemical binding. Cochlea: bony, coil shaped part of inner ear, where hearing occurs. Sound enters through auditory canal, vibrates tympanic membrane,moving three bones of mi...
openbookqa
obqa_02_04401
What relationship is most likely?
[ "birds eat giraffes", "dandelions eat worms", "petunias devour mice", "wolves eat voles" ]
D
consumers eat other organisms
sciq
sciq_01_00345
What is the rising and sinking of warm and cooler material called?
[ "convection", "depression", "conveyance", "diffusion" ]
A
Hot lower mantle material rises upward ( Figure below ). As it rises, it cools. At the top of the mantle it moves horizontally. Over time it becomes cool and dense enough that it sinks. Back at the bottom of the mantle, it travels horizontally. Eventually the material gets to the location where warm mantle material is ...
sciq
sciq_01_11520
Alkenes can react with what to form alcohols?
[ "proteins", "air", "sugars", "water" ]
D
Alkenes can react with water to form alcohols.
sciq
sciq_01_01950
The reaction rate usually increases as the concentration of what increases?
[ "mutations", "reactants", "complexes", "generators" ]
B
Concentration Effects Two substances cannot possibly react with each other unless their constituent particles (molecules, atoms, or ions) come into contact. If there is no contact, the reaction rate will be zero. Conversely, the more reactant particles that collide per unit time, the more often a reaction between them ...
sciq
sciq_01_10885
An electron in an atom is completely described by four of what?
[ "prime bumbers", "quantum numbers", "photosynthesis numbers", "decay numbers" ]
B
The Pauli Exclusion Principle An electron in an atom is completely described by four quantum numbers: n, l, ml, and ms. The first three quantum numbers define the orbital and the fourth quantum number describes the intrinsic electron property called spin. An Austrian physicist Wolfgang Pauli formulated a general princi...
math_qa
mathqa_03_04631
a 15 % stock yielding 12 % is quoted at :
[ "s . 83.33", "s . 110", "s . 112", "s . 125" ]
D
"income of rs 12 on investment of rs 100 income of rs 15 on investment of ? = ( 15 * 100 ) / 12 = 125 answer : d"
openbookqa
obqa_02_04850
In a plant such as a cactus, water is held within
[ "the spikes on the stem", "the lines of a stem", "the inside of the leaves", "the series of tubes in the body" ]
D
a plants require water for to grow
openbookqa
obqa_02_03677
Living near any body of water puts your home at risk of flooding, if there is?
[ "too much rainfall", "West Virginia", "Jelly Beans", "Tape" ]
A
storms cause bodies of water to increase amount of water they contain
ARC-Easy
arc_04_01143
What is the repeating monomer of a DNA molecule?
[ "triglyceride", "dipeptide", "nucleotide", "phospholipid" ]
C
null
openbookqa
obqa_02_03231
To witness physical change you would need to observe the life cycle of a
[ "chicken", "monkey", "alligator", "newt" ]
D
amphibians undergo metamorphosis
openbookqa
obqa_02_01097
if a person rips up their notebook, what happens?
[ "all the mentioned options", "the shape becomes different", "it takes a new structure", "it loses its original form" ]
A
tearing an object changes that object 's shape
math_qa
mathqa_03_00310
if a is thrice as fast as b and together can do a work in 24 days . in how many days a alone can do the work ?
[ "36", "42", "28", "32" ]
D
"a ’ s one day ’ s work = 1 / x b ’ s one day ’ s work = 1 / 3 x a + b ’ s one day ’ s work = 1 / x + 1 / 3 x = 1 / 24 = 3 + 1 / 3 x = 4 / 3 x = 1 / 24 x = 24 * 4 / 3 = 32 answer : d"
math_qa
mathqa_03_00862
find the area of a parallelogram with base 14 cm and height 24 cm .
[ "336", "384", "345", "244" ]
A
"area of a parallelogram = base * height = 14 * 24 = 336 cm 2 answer : option a"
sciq
sciq_01_10324
Particles of matter have the most definite shape in what material state?
[ "plasma", "liquid", "gas", "solid" ]
D
sciq
sciq_01_05561
What is the liquid inside the central vacuole called?
[ "chloroplasm", "osmotic fluid", "cytoplasm", "cell sap" ]
D
The central vacuole contains large amounts of a liquid called cell sap, which differs in composition to the cell cytosol. Cell sap is a mixture of water, enzymes, ions, salts, and other substances. Cell sap may also contain toxic byproducts that have been removed from the cytosol. Toxins in the vacuole may help to prot...
sciq
sciq_01_05889
What happens between particles with opposite charges?
[ "they oppose", "they attract", "they become static", "they repel" ]
B
When charged particles are close enough to exert force on each other, their electric fields interact. Particles with opposite charges attract each other. Particles with like charges repel each other.
math_qa
mathqa_03_02380
two pipes p and q can fill a cistern in 12 and 10 minutes respectively . both are opened together , but at the end of 3 minutes the first is turned off . how much longer will the cistern take to fill ?
[ "1 / 8", "1 / 2", "2 / 4", "1 / 4" ]
B
"3 / 12 + x / 10 = 1 x = 8 1 / 2 answer : b"
sciq
sciq_01_10348
If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. recall that burning is a?
[ "energy change", "temperature change", "chemical change", "physical change" ]
C
If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. Recall that burning is a chemical change.
math_qa
mathqa_03_02200
the contents of a certain box consist of 48 apples and 30 kiwis . how many kiwis must be added to the box so that exactly 30 % of the pieces of fruit in the box will be apples ?
[ "90", "72", "82", "54" ]
C
"apple = ( apple + kiwi + x ) * 0.3 48 = ( 30 + 48 + x ) * 0.3 x = 82 answer : c"
medmcqa
medmcqa_05_01676
Antigenic drift is commonly seen in:
[ "Influenza B", "H . influenza", "Influenza A virus", "Influenza C" ]
C
Influenza A virus
sciq
sciq_01_04347
What prepares the body for fight or flight during emergencies?
[ "abnormal division", "adrenal mechanism", "metabolic response", "sympathetic division" ]
D
The sympathetic division controls internal organs and glands during emergencies. It prepares the body for fight or flight ( Figure below ). For example, it increases the heart rate and the flow of blood to the legs, so you can run away from danger.
openbookqa
obqa_02_01593
What orbits the earth 13 times per year?
[ "night illuminator", "clouds", "oceans", "moon pictures" ]
A
the moon orbiting the Earth approximately occurs 13 times per year
medmcqa
medmcqa_05_00672
A man takes peanut and develop stridor, neck swelling, tongue swelling and hoarseness of voice. Most probable diagnosis is -
[ "Foreign body bronchus", "Parapharyngeal abscess", "Foreign body larynx", "Angioneurotic edema" ]
D
Angioedema is an area of swelling of the lower layer of skin and tissue just under the skin or mucous membranesThe swelling may occur in the face, tongue, larynx, abdomen, or arms and legs.Often it is associated with hives, which are swelling within the upper skin.Onset is typically over minutes to hours The underlying...
sciq
sciq_01_10298
What do you call the light particles that travel through the radiative zone?
[ "photons", "electrons", "neutrons", "ions" ]
A
The radiative zone is the next layer out. It has a temperature of about 4 million degrees C. Energy from the core travels through the radiative zone. The rate the energy travels is extremely slow. Light particles, called photons, can only travel a few millimeters before they hit another particle. The particles are abso...
medmcqa
medmcqa_05_04427
Probenecid interacts with ?
[ "Streptomycin", "Ampicillin", "Vancomycin", "Erythromycin" ]
B
Ans. is 'b' i.e., Ampicillin Interactions of probenecid Probenecid inhibits urinary excretion of penicillins, cephalosporins, methotrexate, sulfonamides and indomethacin. It inhibits biliary excretion of rifampicin. Salicylates block uricosuric action of probenecid. Probenecid inhibits tubular secretion of nitrofuranto...
sciq
sciq_01_08050
What structures receive blood from the atria and pump it out of the heart?
[ "ventricles", "muscles", "Vascular Fibers", "valves" ]
A
The bottom two chambers of the heart are called the left and right ventricles. The ventricles receive blood from the atria and pump it out of the heart, either to the lungs or to the rest of the body.
sciq
sciq_01_08882
A major diversification of what animal group occurred about 50 million years ago, possibly spurred by worldwide climate change?
[ "mammals", "amphibians", "reptiles", "insects" ]
A
The supertree also shows that another major diversification of mammals occurred about 50 million years ago. Again, worldwide climate change may have been one reason. This time Earth’s temperature rose. The warmer temperature led to a greater diversity of plants. This would have meant more food for mammals or their prey...
openbookqa
obqa_02_00285
If your pet bird is having trouble flying
[ "lock them in their cage more", "give up and get a new bird", "try putting them on a diet", "take away all their perches" ]
C
as the weight of an animal decreases , that animal will fly more easily
math_qa
mathqa_03_00415
there are 14 players in a chess group , and each player plays each of the others once . given that each game is played by two players , how many total games will be played ?
[ "91", "30", "45", "60" ]
A
"10 players are there . two players play one game with one another . so 14 c 2 = 14 * 13 / 2 = 91 so option a is correct"
ARC-Challenge
arc_04_02638
An appliance manufacturer has redesigned its original electrical fan. It has made the new fan more energy efficient. This means that the new fan
[ "converts more electricity into heat.", "spins at a slower rate than the original fan.", "requires more electricity than the original fan.", "reduces the percentage of heat lost to the atmosphere." ]
D
null
math_qa
mathqa_03_00035
rs . 200 amounts to rs . 800 in 8 years at simple interest . if the interest is increased by 5 % , it would amount to how much ?
[ "520", "440", "260", "280" ]
D
"( 200 * 5 * 8 ) / 100 = 80 200 + 80 = 280 answer : d"