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7.76k
medmcqa
medmcqa_05_02804
Dowry death investigation is done by
[ "Magistrate", "Sub-inspector", "Police", "Medical officer" ]
A
Inquest: inquiry into the cause of death • Police Inquest ■ Most common type of inquest in India ■ Investigating officer usually is sub inspector or officer not below the rank of (senior) head constable. Magistrate Inquest: Court of Trail • Usually conducted by DM, SDM or Executive Magistrate (i.e. collector, Deputy Co...
sciq
sciq_01_03964
Carbon monoxide, radon gas, dust and pet dander are sources of what kind of pollution?
[ "noise pollution", "indoor air pollution", "sound pollution", "light pollution" ]
B
One source of indoor air pollution is radon gas. Radon is a radioactive gas that may seep into buildings from rocks underground. Exposure to radon gas may cause lung cancer. Another potential poison in indoor air is carbon monoxide. It may be released by faulty or poorly vented furnaces or other fuel-burning appliances...
sciq
sciq_01_07434
The transmission electron micrograph shows the cell walls where two cells do what?
[ "come together", "split apart", "reproduce", "disappear" ]
A
math_qa
mathqa_03_02276
a circular swimming pool is surrounded by a concrete wall 4 ft wide . if the area of the concrete wall surrounding the pool is 11 / 25 that of the pool , then the radius of the pool is ?
[ "22", "20", "88", "387" ]
B
"let the radius of the pool be rft radius of the pool including the wall = ( r + 4 ) ft area of the concrete wall = { \ color { black } \ pi \ left [ ( r + 4 ) ^ { 2 } - r ^ { 2 } \ right ] } = { \ color { black } \ pi \ left [ ( r + 4 + r ) ( r + 4 - r ) \ right ] = 8 \ pi ( r + 2 ) } sq feet { \ color { black } \ rig...
ARC-Challenge
arc_04_02802
A reflex can protect the body from harm. Which organ systems work together to produce a reflex?
[ "nervous and immune systems", "nervous and muscular systems", "circulatory and immune systems", "circulatory and muscular systems" ]
B
null
math_qa
mathqa_03_04191
how many integers between 1 and 10 ^ 17 are such that the sum of their digits is 2 ?
[ "133", "143", "153", "163" ]
C
"the integers with a sum of 2 are : 2 , 20 , 200 , . . . , 2 * 10 ^ 16 and there are 17 integers in this list . also , these integers have a sum of 2 : 11 101 , 110 1001 , 1010 , 1100 etc . . . the number of integers in this list is 1 + 2 + . . . + 16 thus , the total number of integers is 1 + 2 + . . . + 16 + 17 = 17 ...
math_qa
mathqa_03_01163
a volume of 11248 l water is in a container of sphere . how many hemisphere of volume 4 l each will be required to transfer all the water into the small hemispheres ?
[ "2812", "8231", "2734", "4222" ]
A
"a volume of 4 l can be kept in 1 hemisphere therefore , a volume of 11248 l can be kept in ( 11248 / 4 ) hemispheres ans . 2812 answer : a"
math_qa
mathqa_03_01955
what is the average of 120 , 130 , 140 , 510 , 520 , 530 , 1115 , 1120 , and 1125 ?
[ "419", "551", "601", "590" ]
D
"add 120 , 130 , 140 , 510 , 520 , 530 , 1115 , 1120 , and 1125 grouping numbers together may quicken the addition sum = 5310 5310 / 9 = 590 . d"
openbookqa
obqa_02_02077
Which of the following can die if it gets too cold?
[ "iced coffee", "snow", "bears", "Pluto" ]
C
if a living thing becomes too cold then that living thing will die
sciq
sciq_01_08508
Plants can reproduce sexually and in which other way?
[ "genetically", "horizontally", "spontaneously", "asexually" ]
D
The life cycle of all plants is complex because it is characterized by alternation of generations. Plants alternate between diploid sporophyte and haploid gametophyte generations, and between sexual and asexual reproduction. The ability to reproduce both sexually and asexually gives plants the flexibility to adapt to c...
sciq
sciq_01_09737
Which type of plankton make food via photosynthesis?
[ "phytoplankton", "dinoflagellates", "zooplankton", "common plankton" ]
A
Phytoplankton are “plant-like” plankton. Since they make food by photosynthesis, they live in the photic zone. Most are algae.
sciq
sciq_01_07094
The nuclei of radioisotopes are unstable, so they constantly decay and emit what?
[ "chemicals", "acid", "radiation", "moisture" ]
C
The nuclei of radioisotopes are unstable, so they constantly decay and emit radiation.
sciq
sciq_01_07840
Where are sponges most likely anchored to?
[ "beaches", "sand", "sea floor", "reef or rock" ]
D
Sponges are a source of food for many species of fish. Because sponges are anchored to a reef or rock, they can’t run away from predators. However, their sharp spicules provide some defense. They also produce toxins that may poison predators that try to eat them.
sciq
sciq_01_09640
The rate at which the body uses food energy to sustain life and to do different activities is called the what?
[ "hormonal rate", "calorie rate", "metabolic rate", "life cycle" ]
C
Power Consumed at Rest The rate at which the body uses food energy to sustain life and to do different activities is called the metabolic rate. The total energy conversion rate of a person at rest is called the basal metabolic rate (BMR) and is divided among various systems in the body, as shown in Table 7.4. The large...
math_qa
mathqa_03_03604
if 20 men can build a water fountain 56 metres long in 42 days , what length of a similar water fountain can be built by 35 men in 3 days ?
[ "3 m", "4 m", "7 m", "9 m" ]
C
"explanation : let the required length be x metres more men , more length built ( direct proportion ) less days , less length built ( direct proportion ) men 20 : 35 days 42 : 3 : : 56 : x therefore ( 20 x 42 x x ) = ( 35 x 3 x 56 ) x = ( 35 x 3 x 56 ) / 840 = 7 hence , the required length is 7 m . answer : c"
sciq
sciq_01_07042
What type of orbitals do electrons in successive atoms on the periodic table tend to fill first?
[ "orbital lobes", "high energy", "low-energy", "outer orbitals" ]
C
Electrons in successive atoms on the periodic table tend to fill low-energy orbitals first. Thus, many students find it confusing that, for example, the 5p orbitals fill immediately after the 4d, and immediately before the 6s. The filling order is based on observed experimental results, and has been confirmed by theore...
sciq
sciq_01_08274
Respiration rate correlates with what?
[ "energy use", "size", "pressure", "heat" ]
A
There must be more to this story than just gas exchange with the environment. To begin to appreciate the role of oxygen inside your body, think about when your breathing rate increases: climbing a steep slope, running a race, or skating a shift in a hockey game. Respiration rate correlates with energy use, and that cor...
medmcqa
medmcqa_05_03631
Dracunculosis is most common in -
[ "Gujarat", "Rajasthan", "Madhya Pradesh", "Orissa" ]
B
Park's Textbook of Preventive and Social Medicine 23rd edition Page no: 245 In India , the last case was repoed in July 1996. Now India is declared free of guineaworm disease
sciq
sciq_01_05380
What is defined as the ability to cause changes in matter?
[ "energy", "momentum", "nuclear", "evolution" ]
A
Energy is defined as the ability to cause changes in matter. You can change energy from one form to another when you lift your arm or take a step. In each case, energy is used to move matter — you. The energy of moving matter is called kinetic energy .
math_qa
mathqa_03_00497
a reduction of 40 % in the price of bananas would enable a man to obtain 65 more for rs . 40 , what is reduced price per dozen ?
[ "1.95", "2.95", "4.95", "3.95" ]
B
"40 * ( 40 / 100 ) = 16 - - - 65 ? - - - 12 = > rs . 2.95 answer : b"
math_qa
mathqa_03_04869
what is the total number of integers between 100 and 500 ( exclusive ) that are divisible by 5 ?
[ "51", "63", "79", "66" ]
C
105 , 110 , 115 , . . . , 490,495 this is an equally spaced list ; you can use the formula : n = ( largest - smallest ) / ( ' space ' ) + 1 = ( 495 - 105 ) / ( 5 ) + 1 = 78 + 1 = 79 answer is c
openbookqa
obqa_02_04457
a Punnett square is used to identify the percent chance of a trait being passed down from a parent to its what?
[ "home", "younglings", "animals", "pets" ]
B
a Punnett square is used to identify the percent chance of a trait being passed down from a parent to its offspring
sciq
sciq_01_05004
During the embryonic stage of vertebrates, the notochord develops into what?
[ "umbilical cord", "rib cage", "brain stem", "backbone" ]
D
Living chordates are mainly vertebrates. In vertebrates, the notochord develops into a backbone, or vertebral column, after the embryonic stage. A small percentage of chordates are invertebrates. Their notochord never develops into a backbone. Invertebrate chordates include tunicates and lancelets. Both groups of anima...
ARC-Easy
arc_04_01575
A jeweler melts gold to make jewelry. As the gold melts, the mass
[ "increases.", "decreases.", "is destroyed.", "stays the same." ]
D
null
sciq
sciq_01_03850
Polygenic traits are controlled by more than one of these?
[ "genomes", "genes", "phenotypes", "chromosomes" ]
B
Some traits are controlled by more than one gene. They are called polygenic traits. Each gene for a polygenic trait may have two or more alleles. The genes may be on the same or different chromosomes. Polygenic traits may have many possible phenotypes. Skin color and adult height are examples of polygenic traits in hum...
openbookqa
obqa_02_03776
If a young tern is found in a locked box, dead, without marks on it, a the most likely cause of death was
[ "violent stabbing", "accidental shooting", "ceremonial burning", "untouched asphyxiation" ]
D
an animal requires air for survival
sciq
sciq_01_08277
Which factor ruins renewable resources like soil and water?
[ "hateful human action", "resentful human action", "careless human action", "melancholic human action" ]
C
Theoretically, soil and water are renewable resources. However, they may be ruined by careless human actions.
openbookqa
obqa_02_03204
What do cactuses do when the monsoons come to their habitat?
[ "sell precipitation to someone else", "use precipitation right away", "store precipitation for future use", "give precipitation to their friends" ]
C
a cactus stores water
ARC-Easy
arc_04_01293
In some communities, forests are cleared through burning, and the deforested land is used for farming. Which of these is a negative consequence of this practice?
[ "decreased plant and animal diversity", "increased availability of soil nutrients", "greater access to water for plants and animals", "less sunlight reaching the ground" ]
A
null
openbookqa
obqa_02_04944
There's more time to go for walks when
[ "it's winter", "owls are hunting", "it's summer", "there's an evacuation" ]
C
when the season changes , the amount of daylight will change
medmcqa
medmcqa_05_01405
Which one of the following is the shortest acting intravenous analgesic –
[ "Remifantanil", "Fentanyl", "Alfentanil", "Sufentanil" ]
A
Remifentanil is the shortest acting opioid due to rapid hydrolysis by pseudocholinesterase.
openbookqa
obqa_02_00317
a compass uses iron to locate the northern
[ "latitude", "axis", "shoreline", "hemisphere" ]
B
the floating arrow on a compass always points towards the north
math_qa
mathqa_03_01076
there is enough provisions for 100 girls in a hostel for 50 days . if there were 20 men less , how long will the provision last ?
[ "250", "255", "260", "265" ]
A
we have , m 1 d 1 = m 2 d 2 100 * 50 = 20 * d 2 d 2 = 100 * 50 / 20 = 250 days . answer : a
medmcqa
medmcqa_05_04981
Residual chlorine in drinking water should be-
[ "0.5 mg /L", "0.7 mg/L", "1 mg/L", "2 mg/L" ]
A
Ans. is 'a' i.e., 0.5 mg /L Water typeRecommendedResidual chlorine levelContact periodDrinking water> 0.5 mg per litre (ppm)1 hourWater bodies, post disaster> 0.7 mg per litre (ppm)1 hourSwimming pool sanitation>1.0 mg per litre (ppm)1 hour
math_qa
mathqa_03_00825
a merchant gets a 5 % discount on each meter of fabric he buys after the first 2,000 meters and a 7 % discount on every meter after the next 1,500 meters . the price , before discount , of one meter of fabric is $ 2 , what is the total amount of money the merchant spends on 7,000 meters of fabric ?
[ "$ 13,360", "$ 14,450", "$ 15,720", "$ 16,780" ]
A
"for first 2000 meters he does not get any discount . the price is 2 * 2000 = $ 4000 for next 1500 meters , he gets a 5 % discount . the price is 1.9 * 1500 = $ 2850 for the next 1500 meters , he gets a 7 % discount . the price is 1.86 * 3500 = $ 6510 the total price is $ 4000 + $ 2850 + $ 6510 = $ 13,360 the answer is...
sciq
sciq_01_10693
What is the unique layer of nerve cells covering the cerebrum in mammals' brains called?
[ "the midbrain", "the neocortex", "the neural", "cerebral cortex" ]
B
The brains of all mammals have a unique layer of nerve cells covering the cerebrum. This layer is called the neocortex (the pink region of the brains in Figure above ). The neocortex plays an important role in many complex brain functions. In some mammals, such as rats, the neocortex is relatively smooth. In other mamm...
ARC-Challenge
arc_04_02287
Joann is testing soils to see which kind is best for growing marigolds. Which of the following should she do?
[ "Plant the marigolds in the same soil, but water some plants more than others.", "Plant the marigolds in one kind of soil, radishes in another, and daisies in a third kind.", "Plant the marigolds three kinds of soil, and give them different amounts of sun.", "Plant the marigolds in three kinds of soil, and gi...
D
null
sciq
sciq_01_06204
Where does oxygen enter the blood?
[ "in the liver", "in the lungs", "in the veins", "in the heart" ]
B
sciq
sciq_01_08451
Water affects the availability of what important element in aquatic environments and in flooded soils?
[ "carbon", "oxygen", "carbon dioxide", "nitrogen" ]
B
ARC-Easy
arc_04_01618
Deer live in forest for shelter. If the forest was cut down, which situation would most likely happen?
[ "The deer would find shelter in a different habitat.", "The deer would wait for the forest to grow back.", "The deer would move to another forest area.", "The deer would change the type of foods they eat." ]
C
null
math_qa
mathqa_03_02646
if the radius of a circle that centers at the origin is 5 , how many w points on the circle have integer coordinates ?
[ "4", "8", "12", "15" ]
C
"i understand this might not be required but i used the equation of a circle . since the origin is at 0 , x ^ 2 + y ^ 2 = 5 ^ 2 . x , y could be + / - ( 0,5 or 5,0 ) - 4 possibilities . x , y could be + / - ( 3,4 or 4,3 ) - 8 possibilities . ans : w = c"
sciq
sciq_01_00040
What must replicate in the cell cycle before meiosis i takes place?
[ "sperm", "dna", "cell walls", "meiotic fluid" ]
B
Meiosis I begins after DNA replicates during interphase of the cell cycle. In both meiosis I and meiosis II , cells go through the same four phases as mitosis - prophase, metaphase, anaphase and telophase. However, there are important differences between meiosis I and mitosis. The eight stages of meiosis are summarized...
openbookqa
obqa_02_01443
Jerry put some salt into some tap water and stirred it up. What has Jerry made?
[ "a solution", "a battery", "sea water", "lemonade" ]
A
a solution is made of one substance dissolved in another substance
sciq
sciq_01_02578
What part of a spider is equipped with poison glands?
[ "baleen", "chelicerae", "vacuole", "pedipalps" ]
B
math_qa
mathqa_03_00794
in a 500 member association consisting of men and women , exactly 20 % of men and exactly 50 % women are homeowners . what is the least number of members who are homeowners ?
[ "149", "147", "101", "143" ]
C
"solution simple out of 500 20 % are male i . e 100 and 50 % are female i . e 250 , so total homeowner is 350 . now min number homeowner is 100 and max is 250 so question ask us to find least and 101 has least value among all option . so ans is 101 . ans : c"
sciq
sciq_01_09911
Where are the oceans most polluted?
[ "on the ocean floor", "along reefs", "in warmer waters", "along coasts" ]
D
The oceans are most polluted along coasts. Why do you think that's the case? Of course, it's because most pollution enters the oceans from the land. Runoff and rivers carry the majority of pollution into the ocean. Many cities dump their wastewater , water mixed with waste, directly into coastal waters. In some parts o...
math_qa
mathqa_03_01270
2525 * 9
[ "22725", "25675", "22655", "27575" ]
A
"explanation : 2525 * ( 10 - 1 ) = 25250 - 2525 = 22725 option a"
openbookqa
obqa_02_04861
A fixed wing aircraft can fly
[ "high in space", "in the troposphere", "inside an amoeba", "deep underwater" ]
B
a plane travels through the atmosphere
ARC-Easy
arc_04_01511
Which two body systems work together to transport oxygen to the cells?
[ "skeletal and respiratory", "digestive and respiratory", "respiratory and circulatory", "respiratory and reproductive" ]
C
null
math_qa
mathqa_03_04667
billy worked for 3 straight hours on his homework questions . if he solved 132 questions in the third hour , which was twice as many as he solved in the second hour , and 3 times as many questions as he solved in the first hour , how many questions did he solve total ?
[ "242", "312", "424", "525" ]
A
total questions solved = questions solved in 3 rd hr + in 2 nd hr + in 1 st hr 132 + 132 / 2 + 132 / 3 = 242 a is the answer
sciq
sciq_01_06229
Fossil fuels and coal are examples of what kind of resources?
[ "renewable", "reusable", "valuable", "nonrenewable" ]
D
Nonrenewable resources exist in fixed amounts. They can be used up. Examples include fossil fuels such as coal.
openbookqa
obqa_02_00099
An example of a consumer would be
[ "a deer munching grass", "a plant beginning to photosynthesize", "a squirrel eating a bug", "a wolf eating a deer" ]
A
consumers eat other organisms
openbookqa
obqa_02_03460
The family cooked most of their food using a stove and
[ "magic", "ice", "luck", "electricity" ]
D
an electrical device requires electricity to turn on
sciq
sciq_01_01004
What is a substance that can not be broken down any further into other substances?
[ "pure substance", "pure molecule", "pure material", "unbreakable substance" ]
A
pure substance that cannot be broken down into other types of substances.
sciq
sciq_01_11672
What do you call a growing mass of cancerous cells that pushes into nearby tissues?
[ "tumor", "calcium", "pallet", "bacteria" ]
A
Lung cancer is a disease in which the cells found in the lungs grow out of control. The growing mass of cells can form a tumor that pushes into nearby tissues. The tumor will affect how these tissues work. Lung cancer is the most common cause of cancer-related death in men, and the second most common in women. It is re...
math_qa
mathqa_03_02634
a little girl is numbering her collection of butterflies by placing single - digit stickers under each specimen . if the girl has 330 butterflies , how many stickers does she need ? ( the numbers are consecutive and the number of the first butterfly is 1 ) .
[ "882", "901", "1001", "1003" ]
A
for the first 9 butterflies we need 9 stickers . for the next 90 we need 2 stickers each or 180 stickers . for the next 900 butterflies we need 3 stickers each . the first 99 butterflies correspond to 189 stickers . subtract 99 from the total number of butterflies ( 330 ) . this leaves 231 butterflies that use 3 sticke...
math_qa
mathqa_03_03640
find the circumference and area of radius 4 cm .
[ "24 cm ²", "44 cm ²", "50 cm ²", "84 cm ²" ]
C
"area of circle = π r ² = 22 / 7 × 4 × 4 cm ² = 50 cm ² answer : c"
sciq
sciq_01_03682
Which process causes rocks at the earth's surface to change form?
[ "bleaching", "remodeling", "eroding", "weathering" ]
D
Weathering changes solid rock into sediments. Sediments are different sizes of rock particles. Boulders are sediments; so is gravel. At the other end, silt and clay are also sediments. Weathering causes rocks at the Earth’s surface to change form. The new minerals that form are stable at the Earth’s surface.
sciq
sciq_01_01047
What causes the changes of puberty?
[ "glucose", "insulin", "testosterone", "estrogen" ]
D
During adolescence, estrogen causes the changes of puberty. It causes the reproductive organs to mature. It also causes other female traits to develop. For example, it causes the breasts to grow and the hips to widen.
sciq
sciq_01_09607
What is the name for the stratospheric gas layer that protects living things from uv radiation?
[ "atmospheric layer", "toposphere", "carbon layer", "ozone layer" ]
D
The stratosphere contains a layer of ozone gas. Ozone consists of three oxygen atoms (O 3 ). The ozone layer absorbs high-energy UV radiation. As you can see in Figure below , UV radiation splits the ozone molecule. The split creates an oxygen molecule (O 2 ) and an oxygen atom (O). This split releases heat that warms ...
math_qa
mathqa_03_04949
on the number line , the number p is twice as many units from - 2 as - 2 is from 7 . if p is less than – 2 , what is the value of p ?
[ "– 20", "– 10", "– 6", "10" ]
A
"distance between - 2 and 7 = 9 since number p is twice as many units from - 2 as - 2 is from 7 , therefore p can be - 20 since , p is less than - 2 , the value of p = - 20 answer a"
openbookqa
obqa_02_02508
If a thing is a resource which is considered renewable, it can be used
[ "once", "endlessly", "only three times", "only twice" ]
B
renewable resources can be used over again
sciq
sciq_01_09738
What is capable of altering the rate of time passing?
[ "weak gravitational fields", "strong planetary fields", "strong gravitational fields", "strong magnetic fields" ]
C
Strong gravitational fields can alter the rate of time passing. True.
medmcqa
medmcqa_05_00575
High tracheotomy is done in
[ "Vocal cord palsy", "Laryngeal carcinoma", "Subglottic stenosis", "Laryng omalacia" ]
B
Only indication for high tracheostomy - Laryngeal carcinoma.
math_qa
mathqa_03_03842
a train 2500 m long can cross an electric pole in 50 sec and then find the speed of the train ?
[ "178", "180", "182", "184" ]
B
"length = speed * time speed = l / t s = 2500 / 50 s = 50 m / sec speed = 50 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 180 kmph answer : b"
openbookqa
obqa_02_01103
The way that the earth rotates and moves through space can effect how
[ "the stars are viewed in the sky", "how the moon phases", "the heat of the sun", "the plants we are able to eat" ]
A
stars appear to move relative to the horizon during the night
sciq
sciq_01_03681
What are the large segments of the earth’s crust that ordinarily move very slowly?
[ "tectonic plates", "lava plates", "distinct plates", "ocean plates" ]
A
Tectonic plates are large segments of the Earth’s crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. (a) What distance does it move in 1 s at this speed? (b) What is its speed in kilometers per million years? 10. (a) Refer to Table 1.3 to determine the average distance between the ...
sciq
sciq_01_02345
Near-earth asteroids cross paths with earth, meaning they could collide; what are the paths called?
[ "orbits", "curves", "trajectory", "galaxies" ]
A
Near-Earth asteroids have orbits that cross Earth’s orbit. This means that they can collide with Earth. There are over 4,500 known near-Earth asteroids. Small asteroids do sometimes collide with Earth. An asteroid about 5–10 m in diameter hits about once per year. Five hundred to a thousand of the known near-Earth aste...
sciq
sciq_01_08437
The normal respiratory rate per minute in adult humans is?
[ "18-24 breaths", "0-6 breaths", "12-18 breaths", "6-12 breaths" ]
C
Respiratory Rate and Control of Ventilation Breathing usually occurs without thought, although at times you can consciously control it, such as when you swim under water, sing a song, or blow bubbles. The respiratory rate is the total number of breaths, or respiratory cycles, that occur each minute. Respiratory rate ca...
medmcqa
medmcqa_05_03954
Which of the following has impoant role in initiation and maintenance of primitive streak
[ "FGF-8", "BMP-4", "EGRF", "Nodal gene" ]
D
D i.e. Nodal gene The primitive streak is initiated and maintained by expression of nodal, a member of transforming growth factor /3 (TGF - 13) superfamilyQ.
sciq
sciq_01_08737
What happens when water is removed from the endospore?
[ "its metabolism halts", "hibernation", "suspension", "reversal" ]
A
math_qa
mathqa_03_03853
the measurement of a rectangular box with lid is 25 cmx 24 cmx 18 cm . find the volume of the largest sphere that can be inscribed in the box ( in terms of π cm 3 ) . ( hint : the lowest measure of rectangular box represents the diameter of the largest sphere )
[ "288", "2302", "2304", "8640" ]
C
"d = 24 , r = 12 ; volume of the largest sphere = 4 / 3 π r 3 = 4 / 3 * π * 12 * 12 * 12 = 2304 π cm 3 answer : c"
openbookqa
obqa_02_02398
As a pond is slowly evaporated, the food for ducks in that area
[ "is tasteless", "is more", "is booming", "is less" ]
D
as available water in an environment decreases , the amount of available food in that environment will decrease
sciq
sciq_01_11382
The conversion factor between solubility and molar solubility of a compound is known as what?
[ "stochastic mass", "molar mass", "molar value", "mass effect" ]
B
Solubility is normally expressed in g/L of saturated solution. However, solubility can also be expressed as the moles per liter. Molar solubility is the number of moles of solute in one liter of saturated solution. In other words, the molar solubility of a given compound represents the highest molarity solution that is...
ARC-Easy
arc_04_00092
Since 1961, Nevada has led the United States in production of which resource?
[ "gold", "uranium", "lumber", "iron" ]
A
null
openbookqa
obqa_02_04831
What requires an electrical conductor?
[ "cording", "rocks", "winds", "fires" ]
A
wiring requires an electrical conductor
openbookqa
obqa_02_03199
Reproduction means a development of genes like
[ "time travel", "a personality", "magical powers", "hairline" ]
D
living things can all reproduce
openbookqa
obqa_02_01884
Scraping the side of a cliff may result in
[ "ice", "snow", "sand", "wood chips" ]
C
scraping an object may cause small particles to break off of that object
openbookqa
obqa_02_03728
Which is true?
[ "glaciers make depressions that water can pool in", "lions hunt glaciers in the wild", "glaciers are generally high temperature objects", "glaciers can change directions rapidly for speed" ]
A
a glacier causes mechanical weathering
medmcqa
medmcqa_05_01177
pH=7.28, PaCO2=70, Condition is consistent with: March 2005
[ "Metabolic acidosis", "Metabolic alkalosis", "Respiratory acidosis", "Respiratory alkalosis" ]
C
Ans. C: Respiratory acidosis Normal Systemic aerial pH is between 7.35-7.45 and steady state PaCO2 is 40 mm Hg. Disorders and range of values for pH and PaCO2 Metabolic acidosis-Low pH and low PaCO2 Metabolic alkalosis-High pH and high PaCO2 Respiratory acidosis-Low pH and high PaCO2 Respiratory alkalosis-High pH and l...
openbookqa
obqa_02_03395
pushing an object requires
[ "studying", "dancing", "singing", "exherted effort" ]
D
pushing an object requires force
sciq
sciq_01_05459
What is the first cell of a new organism?
[ "egg", "zygote", "seed", "nucleus" ]
B
The new cell is stimulated with an electric shock and embryo development begins, as if it were a normal zygote . The zygote is the first cell of a new organism.
sciq
sciq_01_00857
Atmospheric pressure is low in what anatomically named part of a hurricane?
[ "nose", "mouth", "leg", "eye" ]
D
Atmospheric pressure is low in the eye of a hurricane. In a 1979 hurricane in the Pacific Ocean, a pressure of 0.859 atm was reported inside the eye. What is this pressure in torr?.
sciq
sciq_01_02233
What type of behavior is most flexible?
[ "reflex behavior", "innate behavior", "learned behavior", "adaptation" ]
C
Just about all human behaviors are learned. Learned behavior is behavior that occurs only after experience or practice. Learned behavior has an advantage over innate behavior : it is more flexible. Learned behavior can be changed if conditions change. For example, you probably know the route from your house to your sch...
ARC-Challenge
arc_04_03105
Which of these has the greatest capacity for storing thermal energy from the Sun?
[ "air", "land", "oceans", "plants" ]
C
null
sciq
sciq_01_11327
The term ion applies to entire molecules that are?
[ "neutrally charged", "positively charged protons", "magnetic", "electrically charged" ]
D
openbookqa
obqa_02_04489
Some animals use rocks as a means of what when there is bad weather?
[ "nothing", "Deaf", "safeguarding themselves", "cheese" ]
C
rocks are a source of shelter for small animals in an environment
medmcqa
medmcqa_05_02309
"Tear drop" sign on X-ray PNS is seen in
[ "Blow out fracture of the floor of the orbit", "Comminuted fracture of the maxilla", "Fracture of the nasal bone", "Fracture of the mandible" ]
A
Ans. a (Blow out fracture of the floor of the orbit) (Ref. Grainger Diagnostic Rad 4th/2527; Ref . Q. 159. Of MH-2207)BLOW-OUT FRACTURE is caused by fracturing of the orbital walls with herniation of orbital contents and subsequent tethering of the globe, resulting in pain and diplopia. It usually involves the orbital ...
openbookqa
obqa_02_00475
Which of these items was able to keep things cool thanks to electrical conversion?
[ "magic carpet", "snowy road", "light bulb", "table fan" ]
D
electrical devices convert electricity into other forms of energy
sciq
sciq_01_06363
In a fuel cell, energy is not stored; electrical energy is provided by what?
[ "consumption reaction", "fusion reaction", "chemical reaction", "carbon reaction" ]
C
called an alkaline battery when adapted to operate under alkaline conditions. Button batteries have a high output-to-mass ratio; lithium–iodine batteries consist of a solid electrolyte; the nickel– cadmium (NiCad) battery is rechargeable; and the lead–acid battery, which is also rechargeable, does not require the elect...
sciq
sciq_01_08766
What types of energy is released during a chemical reaction?
[ "human, magnetic, electrical", "temperature , electricity , light", "magnetism, electricity, light", "heat, electricity, light" ]
D
All chemical reactions involve energy. Some chemical reactions consume energy, whereas other chemical reactions release energy. Chemical reactions can be either spontaneous, which do not require an input of energy, or non-spontaneous, which does require an input of some type of energy. Energy may be in the form of heat...
math_qa
mathqa_03_00727
what is the positive difference between the sum of the squares of the first 8 positive integers and the sum of the prime numbers between the first square and fourth square ?
[ "161", "162", "163", "164" ]
C
"forget conventional ways of solving math questions . in ps , ivy approach is the easiest and quickest way to find the answer . the sum of the squares of the first 4 positive integers = 1 ^ 2 + 2 ^ 2 + 3 ^ 2 + . . . + 8 ^ 2 = 204 the sum of the prime numbers between the first square ( = 1 ) and fourth square ( = 16 ) =...
sciq
sciq_01_03321
What type of bounded nucleus do protists have?
[ "Endoplasmic reticulum", "membrane", "Mitochondrion", "Ribosomes" ]
B
ARC-Easy
arc_04_00518
A decomposer is an organism that
[ "preys on other animals", "eats only plants", "recycles nutrients", "uses sunlight to make food" ]
C
null
sciq
sciq_01_10321
What is another name for a broad explanation that is supported by a great deal of evidence?
[ "conjecture", "theory", "concept", "hypothesis" ]
B
A : A theory is needed to explain gravity. In science, a theory is a broad explanation that is supported by a great deal of evidence.
sciq
sciq_01_09654
When land used for mining or other purposes is restored to its natural state, what do you call the process, which is often mandated by law?
[ "removal", "reclamation", "irrigation", "urban renewal" ]
B
U. S. law states that once mining is complete, the land must be restored to its natural state. This process is called reclamation . A pit may be refilled with dirt. It may be filled with water to create a lake. The pits may be turned into landfills. Underground mines may be sealed off or left open as homes for bats. Th...
sciq
sciq_01_08868
What waves do radio and television use?
[ "radio waves", "sound waves", "gamma waves", "light waves" ]
A
Radio waves are electromagnetic waves with the longest wavelengths, lowest frequencies, and least amount of energy. They are used for radio and television broadcasts and many other purposes.
ARC-Easy
arc_04_01570
Fires in forests from lightning rid the forest of dead branches and leaves. If the trees survive and the soil remains intact, the forest will experience regrowth to its climax state by which process?
[ "tropism", "succession", "gradualism", "eutrophication" ]
B
null
math_qa
mathqa_03_02137
for any integer n greater than 1 , n * denotes the product of all the integers from 1 to n , inclusive . how many prime numbers r are there between 6 * + 2 and 6 * + 6 , inclusive ?
[ "none", "one", "two", "three" ]
A
"given that n * denotes the product of all the integers from 1 to n , inclusive so , 6 * + 2 = 6 ! + 2 and 6 * + 6 = 6 ! + 6 . now , notice that we can factor out 2 our of 6 ! + 2 so it can not be a prime number , we can factor out 3 our of 6 ! + 3 so it can not be a prime number , we can factor out 4 our of 6 ! + 4 so...
math_qa
mathqa_03_03418
5 n + 2 > 12 and 7 n - 12 < 44 ; n must be between which numbers ?
[ "2 and 8", "2 and 6", "0 and 9", "2 and 7" ]
A
"5 n + 2 > 12 5 n > 10 n > 2 7 n - 12 < 44 7 n < 56 n < 8 so n must be between 2 and 8 2 < n < 8 correct answer a"