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medmcqa
medmcqa_05_00016
In depression , there is deficiency of:
[ "5-HT", "Acetylcholine", "Dopamine", "GABA" ]
A
Ref: Katzung 14th ed. Monoamines like serotonin and nor-adrenaline are deficient in depressive patients, therefore reuptake inhibitors of these monoamines are used for treatment of depression.
openbookqa
obqa_02_02168
Sounds may travel through air where there is an atmosphere. Sounds that can travel include
[ "honking", "listening", "thinking", "sweating" ]
A
sound can travel through air
sciq
sciq_01_09661
What is the double-membrane structure that constitutes the outermost portion of the nucleus?
[ "nuclear envelope", "energy envelope", "nuclear fold", "energy fold" ]
A
The Nuclear Envelope The nuclear envelope is a double-membrane structure that constitutes the outermost portion of the nucleus ( Figure 4.11). Both the inner and outer membranes of the nuclear envelope are phospholipid bilayers. The nuclear envelope is punctuated with pores that control the passage of ions, molecules, ...
openbookqa
obqa_02_03025
The below surface pebbles of the columbia river are of non rough edges because of?
[ "rough rocks", "river movement", "smoothness", "fish movement" ]
B
rock is made of minerals
openbookqa
obqa_02_00249
Which of these animal traits is generally determined by environmental factors rather than heredity?
[ "eye color", "height", "hair length", "number of chromosomes" ]
C
the length of the hair of an animal is an acquired characteristic
openbookqa
obqa_02_04366
Ice melting erodes
[ "clouds", "plants", "granite", "rivers" ]
C
water causes the most soil and rock erosion
sciq
sciq_01_00294
Angiosperms are also known as what?
[ "flowering plants", "uncommon plants", "dry plants", "dead plants" ]
A
Introduction Plants are as essential to human existence as land, water, and air. Without plants, our day-to-day lives would be impossible because without oxygen from photosynthesis, aerobic life cannot be sustained. From providing food and shelter to serving as a source of medicines, oils, perfumes, and industrial prod...
math_qa
mathqa_03_03468
a person distributed 15 % of his income to his 3 children each . he deposited 30 % of his income to his wife ' s account . he donated 10 % of remaining amount to an orphan house . finally he has $ 40000 . find his total income ?
[ "a", "b", "c", "d" ]
A
3 children got = 3 * 15 % = 45 % wife got = 30 % orphan house = 10 % total = 45 + 30 + 10 = 85 % remaining = 100 - 85 = 15 % 15 % = 40000 100 % = 40000 * 100 / 15 = $ 266666.7 answer is a
openbookqa
obqa_02_02852
Water molecules descending from a high elevation in liquid form are known as
[ "brimstone", "fire", "hail", "rainfall" ]
D
precipitation is when water falls from the sky
sciq
sciq_01_06008
Maintaining a high metabolic rate takes a lot of what?
[ "calories", "food", "fuel", "energy" ]
D
Maintaining a high metabolic rate takes a lot of energy. The energy must come from food. Therefore, mammals need a nutritious and plentiful diet. The diets of mammals are diverse. Except for leaf litter and wood, almost any kind of organic matter may be eaten by mammals.
sciq
sciq_01_07495
During what in the small intestine do rings of smooth muscle repeatedly contract and then relax?
[ "mitosis", "contraction", "compression", "segmentation" ]
D
Mechanical Digestion in the Small Intestine The movement of intestinal smooth muscles includes both segmentation and a form of peristalsis called migrating motility complexes. The kind of peristaltic mixing waves seen in the stomach are not observed here. If you could see into the small intestine when it was going thro...
math_qa
mathqa_03_02376
sophia finished 23 of a book . she calculated that she finished 90 more pages than she has yet to read . how long is her book ?
[ "180", "200", "250", "270" ]
D
"let x be the total number of pages in the book , then she finished 23 ⋅ x pages . then she has x − 23 ⋅ x = 13 ⋅ x pages left . 23 ⋅ x − 13 ⋅ x = 90 13 ⋅ x = 90 x = 270 . so answer is d ."
sciq
sciq_01_05615
A mold is an imprint of an organism left in what?
[ "fossil", "band", "magma", "rock" ]
D
Fossils may form in other ways. With complete preservation, the organism doesn't change much. As seen below, tree sap may cover an organism and then turn into amber. The original organism is preserved so that scientists might be able to study its DNA. Organisms can also be completely preserved in tar or ice. Molds and ...
sciq
sciq_01_02786
The extracellular matrix of most animal cells contains abundant amounts of what protein, which helps hold things together?
[ "elastin", "actin", "keratin", "collagen" ]
D
Extracellular Matrix of Animal Cells Most animal cells release materials into the extracellular space. The primary components of these materials are proteins, and the most abundant protein is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. Collectively, thes...
sciq
sciq_01_01132
What is the only known planet with large amounts of water?
[ "saturn", "jupiter", "mars", "earth" ]
D
Earth is the third planet from the Sun. It is the only planet with large amounts of liquid water, and the only planet known to support life. Earth is the only inner planet that has a large round moon.
openbookqa
obqa_02_03068
What could be used to find out how much carpet is needed for a room?
[ "a tape measure", "a compass", "a barometer", "a beam balance" ]
A
a tape measure is used to measure distance
openbookqa
obqa_02_04873
When a creature experiences feeling, they are likely
[ "making really good choices", "taking the next train", "sensing a thing's texture", "dead from complete exhaustion" ]
C
feeling is when an living thing senses through touch
medmcqa
medmcqa_05_03740
Mesosomes are prokaryotic counterpart of eukaryotic:
[ "Mitochondria", "Endoplasmic reticulam", "Golgi apparatus", "Nucleus" ]
A
Ans: a (Mitochondria) Ref:Ananthanarayan, 7th ed, p. 13Mesosomes are principal sites of respiratory enzymes in bacteria and are analogous to mitochondria of eukaryotes.Mesosomes, (also called chondroids) are vesicular, convoluted or multilaminated structures formed as invaginations of the plasma membrane into the cytop...
ARC-Easy
arc_04_01505
Frog eggs hatch into tadpoles, and then tadpoles gradually develop into frogs. This process is known as
[ "adolescence.", "crossbreeding.", "regeneration.", "metamorphosis." ]
D
null
sciq
sciq_01_07339
Wearing what will reduce the amplitude of sound waves entering the ears?
[ "hardhat", "hearing protectors", "megaphone", "goggles" ]
B
Hearing loss due to loud sounds can be prevented by wearing hearing protectors. They reduce the amplitude of sound waves entering the ears.
sciq
sciq_01_10449
What type of earthquake creates a tsunami?
[ "collapse", "underwater", "Tectonic", "volcanic" ]
B
An underwater earthquake creates a tsunami this way: the movement of the crust displaces water. The displacement forms a set of waves. The waves travel at jet speed through the ocean. Since the waves have low amplitudes and long wavelengths, they are unnoticed in deep water. As the waves reach shore they compress. They...
math_qa
mathqa_03_04996
a bottle contains a certain solution . in the bottled solution , the ratio of water to soap is 3 : 5 , and the ratio of soap to salt is four times this ratio . the solution is poured into an open container , and after some time , the ratio of water to soap in the open container is quartered by water evaporation . at th...
[ "9 : 100", "100 : 9", "12 : 100", "12 : 20" ]
A
"water : soap = 3 : 5 soap : salt = 12 : 20 = > for 12 soap , salt = 20 = > for 5 soap , salt = ( 20 / 12 ) * 5 = 100 / 12 = 25 / 3 so , water : soap : salt = 3 : 5 : 25 / 3 = 9 : 15 : 25 after open container , water : soap : salt = 2.25 : 15 : 25 so , water : salt = 2.25 : 25 = 9 : 100 answer : a"
openbookqa
obqa_02_02859
A tugboat maneuvers a ship to help
[ "watch for sharks", "load passengers", "hold their anchor", "increase their speed" ]
D
a force continually acting on an object in the same direction that the object is moving can cause that object 's speed to increase in a forward motion
sciq
sciq_01_11595
What forms when crystals precipitate out from a liquid?
[ "plasma sedimentary rocks", "chemical sedimentary rocks", "liquid sedimentary rocks", "plants sedimentary rocks" ]
B
Chemical sedimentary rocks form when crystals precipitate out from a liquid. The mineral halite, also called rock salt, forms this way. You can make halite! Leave a shallow dish of salt water out in the Sun. As the water evaporates, salt crystals form in the dish. There are other chemical sedimentary rocks, like gypsum...
sciq
sciq_01_11612
Reproduction that doesn't involve a male gamete is also known as what?
[ "mitosis", "meiosis", "asexual reproduction", "agamogenesis" ]
D
Agamogenesis is any form of reproduction that does not involve a male gamete. These include are parthenogenesis and apomixis. Parthenogenesis is a form of asexual reproduction where growth and development of embryos occur without fertilization. Parthenogenesis occurs naturally in aphids, rotifers, nematodes and some ot...
openbookqa
obqa_02_02646
Needing to use an umbrella could be the result of
[ "altercation", "precipitation", "condensation", "evaporation" ]
B
evaporation causes amount of water to decrease
medmcqa
medmcqa_05_04827
Which imaging modality can help to study CSF dynamics?
[ "MR CSF flowmetry", "Trans cranial ultrasound doppler", "CT ventriculography", "PET scan" ]
A
Ans AMRI CSF flowmetry is a novel imaging technique which works on the principle that CSF is a slow flowing fluid which is influenced by the pulsations transmitted by adjacent arteries. Using this method it is possible to determine the CSF flow rate as well as classify them communicating or non communicating
math_qa
mathqa_03_01398
john has exactly 31 pens , and each pen is either bule , black , or red . if he has 5 more black pens than red pens , and twice as many blue pens as black pens , how many blue pens does john has ?
[ "15", "18", "20", "22" ]
B
x = the number of blue pens y = the number of black pens z = the number of red pens from the first sentence we have equation # 1 : x + y + z = 31 . . . he has 5 more black pens than red pens . . . equation # 2 : y = 5 + z . . . twice as many blue pens as black pens . . . equation # 3 : x = 2 y solve equation # 1 for z ...
math_qa
mathqa_03_00432
in some quantity of ghee , 60 % is pure ghee and 40 % is vanaspati . if 10 kg of pure ghee is added , then the strength of vanaspati ghee becomes 20 % . the original quantity was ?
[ "10", "15", "20", "18" ]
A
let the original quantity be x then , vanaspati ghee in xkg = 40 x / 100 kg = 2 x / 5 kg ( 2 x / 5 ) / ( x + 10 ) = 20 / 100 2 x / ( 5 x + 50 ) = 1 / 5 x = 10 answer is a
sciq
sciq_01_04867
The basic fabric of most biological membranes is a double layer of _________ and other lipids?
[ "phospholipids", "solids", "liquids", "antibodies" ]
A
sciq
sciq_01_02033
Aflatoxins are toxic, carcinogenic compounds released by fungi of this?
[ "protist group", "genus sporozoa", "genus aspergillus", "arthropod class" ]
C
Aflatoxins are toxic, carcinogenic compounds released by fungi of the genus Aspergillus. Periodically, harvests of nuts and grains are tainted by aflatoxins, leading to massive recall of produce. This sometimes ruins producers and causes food shortages in developing countries.
sciq
sciq_01_01339
What does the ground tissue consist mostly of in the stems of both monocots and eudicots?
[ "hinterrhein cells", "parenchyma cells", "epenthesis cells", "eudiocotic cells" ]
B
sciq
sciq_01_02057
What are the high points in a transverse wave called?
[ "crests", "apex", "waves", "peaks" ]
A
A transverse wave is characterized by the high and low points reached by particles of the medium as the wave passes through. The high points are called crests, and the low points are called troughs. You can see both in the Figure below .
ARC-Challenge
arc_04_02734
A timber company is dividing a 10,000 hectare forest into 5 sections. Which unit is most appropriate to use when showing the area of the divided sections?
[ "square inches (in.^2)", "square meters (m^2)", "square kilometers (km^2)", "square centimeters (cm^2)" ]
C
null
openbookqa
obqa_02_03216
A magnet would most likely stick to
[ "a noodle", "a chopstick", "a girder", "a plastic cup" ]
C
carbon steel is always magnetic
sciq
sciq_01_00255
What is the name of the two metalloids in the carbon group called?
[ "silicon and gold", "titantium and copper", "silver and gold", "silicon and germanium" ]
D
Group 14 is called the carbon group. This group contains two metalloids: silicon and germanium. Carbon is a nonmetal, and the remaining elements in this group are metals.
openbookqa
obqa_02_02105
Your immune system would be less effective if you didn't get enough of this
[ "fake vitamin C", "green gummy bears", "unconscious time", "computer time" ]
C
a human requires sleep to be healthy
openbookqa
obqa_02_01647
A body needs fiber to make healthy bowel movements and this can be absorbed by consuming
[ "water", "cheese", "eggs", "broccoli" ]
D
plants are a source of fibers
ARC-Easy
arc_04_00483
What is the most prominent land feature formed by the convergence of the Indo-Australian and Eurasian plates?
[ "China", "Australia", "Ural Mountains", "Himalaya Mountains" ]
D
null
medmcqa
medmcqa_05_01640
Which of the following structure doesn't pierce sacrotuberous ligament
[ "Inferior gluteal aery", "Perforating cutaneous nerve", "Posterior femoral cutaneous nerve", "Coccygeal plexus" ]
C
Sacro - tuberous ligament. Structures piercing sacro-tuberous ligament are coccygeal branches of inferior gluteal aery perforating cutaneous nerve filaments of coccygeal plexus.
medmcqa
medmcqa_05_00838
A 68-year-old woman had been suffering long term effects of diverticulosis and inflammation of the transverse colon. To permit operating on a patient with severe diverticulosis of the transverse colon, it would be necessary to first ligate (tie off) or clamp the source of arterial supply. Which of the following arterie...
[ "Middle colic", "Right colic", "Superior mesenteric", "Ileocolic" ]
A
The middle colic artery is the principal source of arterial supply to the transverse colon. The right colic artery, an infrequent branch of the superior mesenteric artery, supplies the ascending colon. The ileocolic branch of the superior mesenteric artery supplies distal ileum, cecum, and ascending colon. The left col...
math_qa
mathqa_03_01869
a train 280 m long is running with a speed of 60 km / hr . in what time will it pass a man who is running at 6 km / hr in the direction opposite to that in which the train is going ?
[ "15", "6", "7", "9" ]
A
"speed of train relative to man = 60 + 6 = 66 km / hr . = 66 * 5 / 18 = 55 / 3 m / sec . time taken to pass the men = 280 * 3 / 55 = 15 sec . answer : a"
ARC-Easy
arc_04_01709
A pond is near river but not connected to it. What would most likely allow fish to move from the pond to the river?
[ "a fire", "a drought", "a snowstorm", "a flood" ]
D
null
sciq
sciq_01_09099
What is a small, spherical compartment separated by at least one lipid layer from the cytosol?
[ "cuticle", "cortex", "capillary", "vesicle" ]
D
A vesicle is a small, spherical compartment that is separated from the cytosol by at least one lipid bilayer. Many vesicles are made in the Golgi apparatus and the endoplasmic reticulum, or are made from parts of the cell membrane by endocytosis. Vesicles can also fuse with the cell membrane and release their contents ...
sciq
sciq_01_04363
The a in atp is short for what?
[ "acid", "acetic", "amino", "adenosine" ]
D
Let’s take a closer look at a molecule of ATP. Although it carries less energy than glucose, its structure is more complex. “A” in ATP refers to the majority of the molecule – adenosine – a combination of a nitrogenous base and a five-carbon sugar. “T” and “P” indicate the three phosphates, linked by bonds which hold t...
sciq
sciq_01_08021
How many types of mechanical waves are there?
[ "one", "five", "nine", "three" ]
D
There are three types of mechanical waves. They differ in how they travel through a medium. The three types are transverse, longitudinal, and surface waves. All three types are described in detail below.
ARC-Easy
arc_04_00966
A scientist is searching for areas where new solar systems might form. What feature is the scientist looking for?
[ "a star similar to our Sun", "a cloud of dust and gas", "an oxygen-rich atmosphere", "a gravitational acceleration of 9.8 m/sec2" ]
B
null
medmcqa
medmcqa_05_00161
Weight of normal uterus is :
[ "30 -- 45 gms", "45 -- 60 gms", "60 -- 70 gms", "80 -- 100 gms" ]
B
45 -- 60 gms
math_qa
mathqa_03_01118
a box contains 100 balls , numbered from 1 to 100 . if 3 balls are selected at random and with replacement from the box , what is the probability that the sum of the 3 numbers on the balls selected from the box will be odd ?
[ "1 / 4", "3 / 8", "1 / 2", "5 / 8" ]
C
the sum of the three numbers on the balls selected from the box to be odd one should select either three odd numbered balls ( odd + odd + odd = odd ) or two even numbered balls and one odd numbered ball ( even + even + odd = odd ) ; p ( ooo ) = ( 1 / 2 ) ^ 3 ; p ( eeo ) = 3 * ( 1 / 2 ) ^ 2 * 1 / 2 = 3 / 8 ( you should ...
ARC-Easy
arc_04_00784
An electrical circuit can be used to break down water into hydrogen and oxygen. In this process, electrical energy produces
[ "kinetic energy.", "physical changes.", "chemical changes.", "potential energy." ]
C
null
math_qa
mathqa_03_01658
the malibu country club needs to drain its pool for refinishing . the hose they use to drain it can remove 60 cubic feet of water per minute . if the pool is 60 feet wide by 150 feet long by 10 feet deep and is currently at 80 % capacity , how long will it take to drain the pool ?
[ "1800", "1000", "1200", "1400" ]
C
"volume of pool = 60 * 150 * 10 cu . ft , 80 % full = 60 * 150 * 10 * 0.8 cu . ft water is available to drain . draining capacity = 60 cu . ft / min therefore time taken = 60 * 150 * 10 * 0.8 / 60 min = 1200 min c"
openbookqa
obqa_02_04328
Plants expel a gas that
[ "is poisonous to humans", "is used to make balloons rise into the air", "humans exhale as well", "our circulatory system spreads to our body from our lungs" ]
D
the circulatory system brings oxygen from the lungs to the rest of the body
sciq
sciq_01_10911
In which state does matter need to be for nuclear fusion?
[ "cells state", "plasma state", "gaseous state", "solid state" ]
B
Unfortunately, using energy from nuclear fusion is far from a reality. Scientists are a long way from developing the necessary technology. One problem is raising temperatures high enough for fusion to take place. Another problem is that matter this hot exists only in the plasma state. There are no known materials that ...
sciq
sciq_01_05311
What is the condition in which distant objects are seen clearly, but nearby objects appear blurry?
[ "gleam , or hyperopia", "nearsightedness or hyperopia", "farsightedness, or hyperopia", "synthesise , or hyperopia" ]
C
Farsightedness, or hyperopia, is the condition in which distant objects are seen clearly, but nearby objects appear blurry. It occurs when the eyeball is shorter than normal (see Figure below ). This causes images to be focused in a spot that would fall behind the retina (if light could pass through the retina). Hypero...
medmcqa
medmcqa_05_01876
Lipofuscin containing macrophages are a feature of?
[ "Wear and tear", "Fat deposit", "Iron deficiency", "Calcification" ]
A
Ans is 'a' i.e., Wear and tear Lipofuscin* It is an insoluble pigment, also known as lipochrome and wear or tear or aging pigment. Lipofuscin is not injurious to the cell or its functions.* Its importance lies in being the tell-tale sign of free radical injury and lipid peroxidation.* It is seen in cells undergoing slo...
openbookqa
obqa_02_00968
When eagles are hunting in a field, some of their nutrients come from
[ "beans", "fish", "deer", "rodents" ]
D
eagles eat rabbits
medmcqa
medmcqa_05_04795
The "Distant metastasis" of bone can be best detected by:
[ "NMI", "Bone scan", "CT", "Intravenous venogram" ]
B
Bone scan
medmcqa
medmcqa_05_03889
Specific for GIST tumor is -
[ "CD117", "CD29", "CD34", "CD23" ]
A
About 80% of all GISTs have oncogenic,gain of function mutations of the gene coding the tyrosine kinase c-KIT or CD117 GENERAL AND SYSTEMIC PATHOLOGY RAMDAS NAYAK PAGE NO:390
sciq
sciq_01_06085
What natural process is associated with the death of cells?
[ "cooling", "dissolving", "aging", "reducing" ]
C
6. Aging is associated with the death of cells. Give two reasons why cells die.
sciq
sciq_01_04632
At the earth’s surface, the air pressure exerted on you is a result of the weight of what above you?
[ "humidity", "water", "air", "magnetic force" ]
C
11.4 Variation of Pressure with Depth in a Fluid If your ears have ever popped on a plane flight or ached during a deep dive in a swimming pool, you have experienced the effect of depth on pressure in a fluid. At the Earth’s surface, the air pressure exerted on you is a result of the weight of air above you. This press...
openbookqa
obqa_02_01918
A person takes a page out of a book and crumples it, so the page is
[ "flat", "smooth", "torn", "round" ]
D
crumple means change shape from smooth into compacted by physical force
openbookqa
obqa_02_03656
Which animal will eat only plants?
[ "snake", "fish", "slug", "deer" ]
D
herbivores only eat plants
openbookqa
obqa_02_04731
This animal is able to blend into its environment by changing its appearence
[ "an Elephant", "a Bottlenose dolphin", "a Phyllomimus", "a Hammerhead shark" ]
C
An example of camouflage is when an organism looks like its environment
sciq
sciq_01_04893
Just about all life processes depend on what?
[ "meat", "water", "carbon", "air" ]
B
Water is involved in many biochemical reactions. As a result, just about all life processes depend on water.
ARC-Easy
arc_04_01175
When electric current flows through the metal filament of a light bulb, electrical energy is converted to
[ "heat energy only.", "heat and light energy.", "light and motion energy.", "light energy only." ]
B
null
sciq
sciq_01_11336
What is the name for compounds that contain only carbon and hydrogen?
[ "carbides", "hydrocarbons", "carbohydrates", "particles" ]
B
The fuel that burns in a combustion reaction contains compounds called hydrocarbons. Hydrocarbons are compounds that contain only carbon (C) and hydrogen (H). The charcoal pictured in the Figure above consists of hydrocarbons. So do fossil fuels such as natural gas. Natural gas is a fuel that is commonly used in home f...
sciq
sciq_01_04172
What term is used to describe a solute that is water fearing?
[ "hydrogenic", "claustrophobic", "anti-hydral", "hydrophobic" ]
D
London interactions c. London dispersion forces Hydrophilic and Hydrophobic Solutes A solute can be classified as hydrophilic (literally, “water loving”), meaning that it has an electrostatic attraction to water, or hydrophobic (“water fearing”), meaning that it repels water. A hydrophilic substance is polar and often ...
math_qa
mathqa_03_03438
karen places a bet with tom that she will beat tom in a car race by 4 miles even if karen starts 4 minutes late . assuming that karen drives at an average speed of 60 mph and tom drives at an average speed of 45 mph , how many w miles will tom drive before karen wins the bet ?
[ "15", "18", "21", "24" ]
D
"let k and t be the speeds of karen and tom respectively . t be the time that karen will travel - - - - > t + 4 / 60 will be the total time tom will travel by the time the distance between karen and tom is 4 miles . thus , per the question , k ( t ) - t ( t + 4 / 60 ) = 4 - - - > t = 7 / 15 hours thus the distance trav...
medmcqa
medmcqa_05_02006
Most common complication of scaphoid fracture?
[ "Malunion", "Avascular necrosis", "Wrist stiffners", "Ahritis" ]
B
Ans. is `b' i.e., Avascular necrosis Complication of scaphoid fracture Fractures of the scaphoid bone, even when undisplaced, are potentially troublesome and the incidence of complications is high. The most impoant complications are :- Delayed union Non-union Avascular necrosis Osteoahritis of wrist "AVN is the most co...
medmcqa
medmcqa_05_03912
This special investigation is known as:
[ "CBCT", "Scanogram", "Orthopantomogram", "Stenvers view" ]
C
Ans. C OrthopantomogramIt is a panoramic or wide view radiograph of the lower face or dental skeleton. Apart from pathologies of teeth it is also used to study the temporomandibular joint.
medmcqa
medmcqa_05_04620
The important feature of psoriasis is –
[ "Crusting", "Scaling", "Oozing", "Erythema" ]
B
Psoriasis is a papulosquamous disorder characterized by papule and scales.
sciq
sciq_01_00968
What is the force pulling an object downward called?
[ "magnetism", "density", "momentum", "weight" ]
D
The weight of an object is the force pulling the object downward. On Earth, this would be the gravitational force of the Earth on the object. On the moon, this would be the gravitational force of the moon on the object. The gravitational force of the moon is one-sixth the magnitude of the gravitational force of the Ear...
sciq
sciq_01_08179
Which gas do people exhale during each breath?
[ "carbon dioxide", "oxygen", "carbon monoxide", "nitrogen" ]
A
What is this strange-looking object? Can you guess what it is? It’s a model of a certain type of matter. Some types of matter are elements, or pure substances that cannot be broken down into simpler substances. Many other types of matter are compounds. The model above represents a compound. The compound it represents i...
ARC-Easy
arc_04_00327
A wet towel will dry when it is left in the Sun. Which process occurs to make this happen?
[ "melting", "boiling", "condensation", "evaporation" ]
D
null
math_qa
mathqa_03_03357
a bowl of fruit contains 14 apples and 23 oranges . how many oranges must be removed so that 70 % of the pieces of fruit in the bowl will be apples ?
[ "3", "6", "14", "17" ]
D
number of apples = 14 number of oranges = 23 let number of oranges that must be removed so that 70 % of pieces of fruit in bowl will be apples = x total number of fruits after x oranges are removed = 14 + ( 23 - x ) = 37 - x 14 / ( 37 - x ) = 7 / 10 = > 20 = 37 - x = > x = 17 answer d
openbookqa
obqa_02_02649
More sunlight will be absorbed by
[ "a daffodil with curled leaves", "small plant with tiny leaves", "a plant with wide, smooth leaves", "a daisy with thin, short leaves" ]
C
sunlight contains ultraviolet light
math_qa
mathqa_03_04662
a 360 m long train is running at a speed of 55 km / hr . it crossed a platform of length 520 m in ?
[ "57.6 sec", "20.2 sec", "31.8 sec", "50.4 sec" ]
A
"speed = 55 km / hr ( to convert km / hr in to m / s ) = 55 x 5 / 18 m / s distance = 360 m + 520 m ( if questions is about train crossing a post you need to consider only the length of train , ) = 880 m time = distance / speed = 880 x 18 / ( 5 x 55 ) = 57.6 sec ans is : a"
sciq
sciq_01_00904
The large positive free energy change leads to a value that is extremely what?
[ "small", "random", "high", "complex" ]
A
The large positive free energy change leads to a value that is extremely small. Both lead to the conclusion that the reactants are highly favored and very few product molecules are present at equilibrium.
math_qa
mathqa_03_03718
how many points ( x , y ) lie on the line segment between ( 32 , 12 2 / 3 ) and ( 7 , 17 2 / 3 ) such that x and y are both integers ?
[ "one", "4", "5", "8" ]
C
"slope = ( 17 2 / 3 - 12 2 / 3 ) / ( 7 - 32 ) = - 1 / 5 y = mx + b = > 12 2 / 3 = - 22 / 3 + b = > b = 19 y = - x / 5 + 19 only integer values work , and the only multiples of 5 between 7 and 32 for x values are 10 , 15 , 20 , 25 and 30 , thus 5 points . c"
sciq
sciq_01_06223
Einstein developed a theory about how electromagnetic radiation can behave as both a wave and what else?
[ "particle", "sound", "energy", "bacteria" ]
A
In 1905, the physicist Albert Einstein developed a new theory about electromagnetic radiation. The theory is often called the wave-particle theory . It explains how electromagnetic radiation can behave as both a wave and a particle. Einstein argued that when an electron returns to a lower energy level and gives off ele...
math_qa
mathqa_03_00164
the mean of 50 observations was 36 . it was found later that an observation 48 was wrongly taken as 23 . the corrected new mean is ?
[ "36.6", "36.1", "36.5", "36.2" ]
C
"correct sum = ( 36 * 50 + 48 - 23 ) = 1825 . correct mean = 1825 / 50 = 36.5 answer : c"
sciq
sciq_01_02466
With logistic growth, how does population growth start out?
[ "slowly", "rapidly", "steadily", "exponentially" ]
A
With logistic growth, the population starts out growing slowly, and then the rate of growth increases—but only to a point. The rate of growth tapers off as the population size approaches its carrying capacity. Carrying capacity is the largest population size that can be supported in an area without harming the environm...
openbookqa
obqa_02_04782
Which would a fire likely be the cause of?
[ "an ice formation in the ocean", "a cat's unique fur pattern", "a person eating a bowl of cereal", "a scar on the back of a tiger" ]
D
fire causes burning
medmcqa
medmcqa_05_03085
Antithyroid drug contraindicated in pregnancy ?
[ "Propylthiouracil", "1131", "Methimazole", "Carbimazole" ]
B
Ans. is'b'i.e., I 131lRef: KDT 7tu/e p. 25Antithyroid treatment contraindicated in pregnancyThyroidectomy and I 131 are contraindicated during pregnancy.
openbookqa
obqa_02_03134
A bean sprout will beautifully boom if given plenty of access to
[ "salted dirt", "H2O", "sticky napkins", "searing heat" ]
B
a plants require water for to grow
sciq
sciq_01_03295
What is the name for birds that live on water like ducks?
[ "landfowl", "waterfowl", "gamefowl", "guineafowl" ]
B
Waterfowl are birds that live on the water. These include ducks, geese, swans, and pelicans, to name a few. Landfowl are ground-feeding birds such as chickens and turkeys. Penguins are a group of flightless birds adapted for life in the water with flippers. Diurnal raptors are birds of prey that hunt during the day. Th...
sciq
sciq_01_02633
What is the term for a solution that resists dramatic changes in ph?
[ "inert", "neutral", "stable", "buffer" ]
D
As indicated in Section 12.4 "Strong and Weak Acids and Bases and Their Salts", weak acids are relatively common, even in the foods we eat. But we occasionally encounter a strong acid or base, such as stomach acid, which has a strongly acidic pH of 1.7. By definition, strong acids and bases can produce a relatively lar...
sciq
sciq_01_05300
What is the term for the difference in elevation between two contour lines?
[ "height", "mapping interval", "contour interval", "design interval" ]
C
Contour lines are lines of equal elevation. Contour intervals are the difference in elevation between two contour lines.
math_qa
mathqa_03_01585
a man can do a piece of work in 5 days , but with the help of his son , he can do it in 4 days . in what time can the son do it alone ?
[ "15", "17", "20", "8" ]
C
"son ' s 1 day ' s work = ( 1 / 4 ) - ( 1 / 5 ) = 1 / 20 the son alone can do the work in 20 days answer is c"
math_qa
mathqa_03_02643
a certain sum of money is divided among a , b and c such that a gets one - third of what b and c together get and b gets two - seventh of what a and c together get . if the amount received by a is $ 20 more than that received by b , find the total amount shared by a , b and c .
[ "$ 320", "$ 420", "$ 720", "$ 220" ]
C
"a = 1 / 3 ( b + c ) = > c = 3 a - b - - - ( 1 ) b = 2 / 7 ( a + c ) = > c = 3.5 b - a - - ( b ) a - b = $ 20 a = 20 + b ( 1 ) = = = > c = 60 + 3 b - b = 2 b + 60 = = > 2 b - c = - 60 - - - ( 3 ) ( 2 ) = = = > c = 3.5 b - b - 20 = 2.5 b - 20 = = > 2.5 b - c = 20 - - - ( 4 ) from ( 4 ) and ( 3 ) 0.5 b = 80 b = $ 160 a =...
openbookqa
obqa_02_01692
Which of these is the most likely to result in a trip to the hospital?
[ "a flashback explosion inside a container", "watching a television drama about heart attacks", "filling a bucket of water with a hose", "eating waffles that are just the right temperature" ]
A
when a gas in an open container evaporates, that gas spreads out into the air
math_qa
mathqa_03_01814
what is the least integer greater than – 1 + 0.5 ?
[ "– 2", "– 1", "0", "1" ]
C
"this question is just about doing careful arithmetic and remembering what makes a numberbiggerorsmallercompared to another number . first , let ' s take care of the arithmetic : ( - 1 ) + ( 0.5 ) = - 0.5 on a number line , since we ' re adding + . 5 to a number , the total moves to the right ( so we ' re moving from -...
math_qa
mathqa_03_00391
if m and n are positive integers and m ^ 2 + n ^ 2 = 10 , what is the value of m ^ 3 + n ^ 3 ?
[ "28", "224", "320", "512" ]
A
"you need to integers which squared are equal 10 . which could it be ? let ' s start with the first integer : 1 ^ 2 = 1 2 ^ 2 = 4 3 ^ 2 = 9 stop . the integers ca n ' t be greater than 3 or we will score above 10 . the second integer need to be picked up the same way . 1 ^ 2 = 1 2 ^ 2 = 4 3 ^ 2 = 9 the only pair that m...
math_qa
mathqa_03_04593
a number when divided by 899 gives a remainder 63 . if the same number is divided by 29 , the remainder will be
[ "11", "13", "15", "data inadequate" ]
D
"sol . number = ( 31 x q ) + 29 . given data is inadequate . answer d"
medmcqa
medmcqa_05_03193
Amifostine is a:
[ "Radiosensitizer", "Radioprotector", "Radio modifier", "Radiomimetic" ]
B
Ans is 'b' i.e. Radioprotector Amifostine is an organic thio phosphate analog designed to produce preferential cytoprotection of normal tissues from cytotoxic therapies.The preferential cytoprotection is due to the activation of amifostine by membrane-bound alkaline phosphatase to the free thiol, WR-1065, the active fo...
sciq
sciq_01_08168
Mammals are either herbivores, carnivores or what?
[ "decomposers", "nematodes", "vegetarians", "omnivores" ]
D
Some mammals are strictly herbivores or strictly carnivores . However, most mammals will eat other foods if necessary. Some mammals are omnivores . They routinely eat a variety of both plant and animal foods. Most mammals also feed on a variety of other species. The few exceptions include koalas, which feed only on euc...
sciq
sciq_01_01241
What is it called when liquid water falls from the sky?
[ "sedimentation", "water cycling", "erosion", "precipitation" ]
D
sciq
sciq_01_01511
The four types of light receptors include different types of cones and what else?
[ "joints", "rods", "neutrons", "quarks" ]
B
26.3 Color and Color Vision • The eye has four types of light receptors—rods and three types of color-sensitive cones. • The rods are good for night vision, peripheral vision, and motion changes, while the cones are responsible for central vision and color. • We perceive many hues, from light having mixtures of wavelen...
math_qa
mathqa_03_02978
john has 10 pairs of matched socks . if he loses 11 individual socks , what is the greatest number of pairs of matched socks he can have left ?
[ "7", "6", "5", "4" ]
D
"because we have to maximize the pair of matched socks , we will remove 5 pairs ( 10 socks ) out of 10 pairs 1 sock from the 6 th pair . thus the no of matching socks pair remaining = 10 - 6 = 4 answer d"
math_qa
mathqa_03_04349
5 n + 7 > 12 and 7 n - 5 < 44 ; n must be between which numbers ?
[ "1 and 8", "2 and 6", "0 and 9", "1 and 7" ]
D
"5 n > 5 - - > n > 1 7 n < 49 - - > n < 7 1 < n < 7 answer : d"