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7.76k
ARC-Easy
arc_04_00227
New vaccines for diseases are being developed all the time. How do vaccines most likely help people?
[ "Vaccines help prevent illnesses.", "Vaccines keep the environment cleaner.", "Vaccines help cure people who are sick.", "Vaccines kill bacteria that cause infections." ]
A
null
math_qa
mathqa_03_02485
sandy had $ 224 left after spending 30 % of the money she took for shopping . how much money did sandy take along with her ?
[ "$ 260", "$ 290", "$ 320", "$ 350" ]
C
"let the money sandy took for shopping be x . 0.7 x = 224 x = 320 the answer is c ."
medmcqa
medmcqa_05_00761
Japanese Encephalitis is caused by
[ "Transmitted by Culex mosquitoes", "Transmitted by Anopheles mosquitoes", "Transmitted by Mansoni mosquitoes", "Transmitted by Aedes mosquitoes" ]
A
Transmitted by Culex mosquitoes
math_qa
mathqa_03_00285
find the 25 % of rs . 800 .
[ "s . 50", "s . 200", "s . 100", "s . 80" ]
B
"explanation : 25 % of 800 = > 25 / 100 * 800 = rs . 200 answer : b"
ARC-Challenge
arc_04_02160
A signal from the brain to a muscle in the arm is transmitted by which structures?
[ "sensory neurons", "interneurons", "motor neurons", "mechanoreceptor neurons" ]
C
null
math_qa
mathqa_03_00703
what is the greatest possible length which can be used to measure exactly the lengths 180 m , 500 m and 15 m 20 cm ?
[ "80 cm", "50 cm", "40 cm", "10 cm" ]
A
required length = hcf of 18000 cm , 50000 cm , 1520 cm = 80 cm answer is a
openbookqa
obqa_02_04127
seed dispersal is when the seeds of a plant are moved from the plant to a new what?
[ "planet", "bus", "page", "locale" ]
D
seed dispersal is when the seeds of a plant are moved from the plant to a new environment
sciq
sciq_01_11579
Polyester fabric's resistance to wrinkling comes from the cross-linking of what?
[ "polymer strands", "algae strands", "velocity strands", "wool strands" ]
A
PET is used in tires, photographic film, food packaging, and clothing. Polyester fabric is used in permanent-press clothing. Its resistance to wrinkling comes from the cross-linking of the polymer strands.
sciq
sciq_01_09343
Silencing genes through epigenetic mechanisms is commonly practiced on what type of uncontrolled cells?
[ "neutral cells", "cancer cells", "giving cells", "innoculous cells" ]
B
Cancer and Epigenetic Alterations Silencing genes through epigenetic mechanisms is also very common in cancer cells. There are characteristic modifications to histone proteins and DNA that are associated with silenced genes. In cancer cells, the DNA in the promoter region of silenced genes is methylated on cytosine DNA...
medmcqa
medmcqa_05_04187
Stocker's line is seen in-
[ "Pterygium", "Glaucoma", "Posteriorscleritis", "Diabetic retinopathy" ]
A
Ans. is 'a' i.e., Pterygium o Stocker's line is line of iron deposition in the corneal epithelium seen adjacent to the head of the pterygium.Pigmentorv glaucomao It is a type of secondary open angle glaucoma where in clogging up of trabecular meshwork occurs by the pigment particles.o The condition typically occurs in ...
medmcqa
medmcqa_05_02811
Most commonly associated Fungus with orbital cellulitis in patients with Diabetic Ketoacidosis is
[ "Candida", "Mucor", "Aspergillus", "Histoplasma" ]
B
(B) MucorRhino - Orbital mucormycosis:Mucormycosis is a very rare opportunistic infection caused by fungi of the family Mucoraceae, which typically affects patients with diabetic ketoacidosis or immunosuppression. This aggressive and often fatal infection.Specific infections - rhinocerebral mucormycosis:Fungal infectio...
sciq
sciq_01_07509
What are accessory digestive organs critical for breaking down?
[ "enzymes", "food", "pathogens", "hormones" ]
B
Digestive System Organs The easiest way to understand the digestive system is to divide its organs into two main categories. The first group is the organs that make up the alimentary canal. Accessory digestive organs comprise the second group and are critical for orchestrating the breakdown of food and the assimilation...
medmcqa
medmcqa_05_02349
Most common organism to cause OPSI
[ "Streptococcal pneumonia", "H. influenza", "Mycobacterium TB", "Babesia" ]
A
Ans (a) Streptococcal pneumoniaRef Sabiston page 1568/20th edition* 50-90% cases of OPSI is due to streptococcal pneumonia.* PPV23 vaccine is given nowadays 2 weeks prior to elective surgery
openbookqa
obqa_02_03211
High areas can be visually represented by:
[ "deep sea", "mountains", "valleys", "basins" ]
B
the Himalayas were formed by rock folding
medmcqa
medmcqa_05_02237
Iv glucose tolerance is done in -
[ "Children", "Pregnancy", "Gastrectomy", "Old age" ]
C
The IV Glucose Tolerance Blood Test helps determine glucose levels in blood, after intravenous administration of a 50% solution of glucose. It is used to diagnose diabetes, cancers, and metabolic disordersThis test is more sensitive than the oral glucose tolerance blood test because the glucose sample does not have to ...
sciq
sciq_01_05167
What are materials that have a low resistance to electrical current called?
[ "resistors", "electrical conductors", "fast conductors", "electrons" ]
B
Materials that have low resistance to electric current are called electric conductors. Many metals are good electric conductors.
math_qa
mathqa_03_01020
a bag contains 7 green balls and 7 white balls . if two balls are drawn simultaneously , what is the probability that both balls are the same colour ?
[ "4 / 13", "6 / 13", "8 / 21", "11 / 21" ]
B
"the total number of ways to draw two balls is 14 c 2 = 91 the number of ways to draw two green balls is 7 c 2 = 21 the number of ways to draw two white balls is 7 c 2 = 21 p ( two balls of the same colour ) = 42 / 91 = 6 / 13 the answer is b ."
sciq
sciq_01_07080
Which law refers to the electron charge remaining the same during transfer?
[ "law of construct of charge", "law of change", "law of conservation of charge", "law of conservation of speculation" ]
C
Three ways electrons can be transferred are conduction, friction, and polarization. In each case, the total charge remains the same. This is the law of conservation of charge.
sciq
sciq_01_03915
Earthquake waves that travel trhough underground rocks in all directions are known as?
[ "typical waves", "primary waves", "secondary waves", "tertiary waves" ]
C
Another example of transverse waves occurs with earthquakes. The disturbance that causes an earthquake sends transverse waves through underground rocks in all directions from the disturbance. Earthquake waves that travel this way are called secondary, or S, waves. An S wave is illustrated in Figure below .
sciq
sciq_01_01308
Newly formed what aggregates into threads that form the framework of the clot?
[ "collagen", "fibrin", "blood", "plasma" ]
B
medmcqa
medmcqa_05_01515
A 15 year old child presents in the OPD with acute abdominal pain. He also gives history of blood and mucous in the stool. On P/A examination a mass is palpable. The MOST probable diagnosis in this patient is?
[ "Meckel's diveiculum", "Volvulus", "Intussusception", "Hyperophic pyloric stenosis" ]
C
A syndrome of colicky pain, passage of blood per rectum and a palpable mass (intussuscepted segment) is characteristic of intussusception. Ref: CSDT 13/e, Page 629; Bailey & Love 25/e, Page 1191.
openbookqa
obqa_02_02969
Hunting any kind of animal will eventually cause that species population numbers to
[ "go down", "phone number", "atomic number", "egg shell number" ]
A
harming an animal species causes that animal 's population to decrease
openbookqa
obqa_02_00429
A human who goes long periods of time without nourishment will experience
[ "Starvation", "Perspiration", "Fullness", "happiness" ]
A
lack of food causes starvation
sciq
sciq_01_00381
When a predator kills and eats its prey, what sort of predation is this referred to as?
[ "false", "predestined", "true", "just" ]
C
True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey dies in the mouth or the digestive system of the predat...
sciq
sciq_01_05151
What is the smallest unit of a living thing?
[ "electron", "organ", "proton", "cell" ]
D
A cell is the smallest unit of a living thing. A living thing, like you, is called an organism. Thus, cells are the basic building blocks of all organisms. In multicellular organisms, several cells of one particular kind interconnect with each other and perform shared functions to form tissues (for example, muscle tiss...
math_qa
mathqa_03_02487
what is the sum of all digits for the number 10 ^ 27 - 48 ?
[ "212", "222", "232", "242" ]
C
"10 ^ 27 is a 28 - digit number : 1 followed by 27 zeros . 10 ^ 27 - 48 is a 27 - digit number : 25 9 ' s and 52 at the end . the sum of the digits is 25 * 9 + 5 + 2 = 232 . the answer is c ."
sciq
sciq_01_06367
In which stage do chromosomes line up one on top of each other along the middle of the cell, similar to how they line up in mitosis?
[ "cyclohexane ii", "metaphase ii", "hectase ii", "chromosome ii" ]
B
Metaphase II: The chromosomes line up one on top of each other along the middle of the cell, similar to how they line up in mitosis. The spindle is attached to the centromere of each chromosome.
sciq
sciq_01_08943
In animal cells, what arises from the centrosomes and includes spindle microtubules and asters?
[ "ribosomes", "the spindle", "DNA helix", "Golgi apparatus" ]
B
math_qa
mathqa_03_00157
5 friends visited a fruit stall , and everyone decided to contribute equally to the total bill of $ 100 . if one of the friends had a coupon for 6 % off the total bill , and if each friend still contributed equally after the coupon was applied to the bill , how much did each friend pay ?
[ "18", "18.8", "19", "17.8" ]
B
at the non - discounted price , each friend would pay $ 20 , as $ 100 divided by 5 friends is $ 20 per friend . but if the bill is 6 % off , then each friend would pay 6 % less . 6 % of $ 20 is $ 1.2 , so each friend saves $ 1.2 and pays the remaining 18.8 correct option : option b
sciq
sciq_01_11136
The kinetic energy of molecules is generally proportionate to what other property that they have?
[ "mass", "temperature", "variation", "precipitation" ]
B
The average kinetic energy of the molecules is proportional to the temperature of the sample.
sciq
sciq_01_05913
Fish are a diverse and interesting group of organisms in what sub-phylum?
[ "mammals", "vertebrates", "organelles", "invertebrates" ]
B
If the word fish makes you think of cute little goldfish in a tank, check out the anglerfish pictured in Figure below . It’s also called a black sea devil. Surprisingly, goldfish and angler fish aren’t all that different from each other as far as fish diversity goes. Both fish are placed in the same fish class. Clearly...
sciq
sciq_01_02184
Sphenodontia sphenodontia (“wedge tooth”) arose in the mesozoic era and includes only one of what?
[ "inner genus", "outside genus", "living genus", "traveling genus" ]
C
Sphenodontia Sphenodontia (“wedge tooth”) arose in the Mesozoic era and includes only one living genus, Tuatara, comprising two species that are found in New Zealand (Figure 29.26). Tuataras measure up to 80 centimeters and weigh about 1 kilogram. Although quite lizard-like in gross appearance, several unique features ...
sciq
sciq_01_08023
What do you call the process that results in an animal producing offspring?
[ "creationism", "adoption", "reproduction", "differentiation" ]
C
math_qa
mathqa_03_02073
what is the smallest integer y for which 27 ^ y > 3 ^ 24 ?
[ "7", "8", "9", "10" ]
C
"27 ^ y > 3 ^ 24 converting into the same bases : 27 ^ y > 27 ^ 8 therefore for the equation to hold true , y > 8 or y = 9 option c"
math_qa
mathqa_03_03282
the current of a stream runs at the rate of 4 kmph . a boat goes 10 km and back to the starting point in 2 hours , then find the speed of the boat in still water ?
[ "a", "b", "c", "d" ]
D
"s = 4 m = x ds = x + 4 us = x - 4 10 / ( x + 4 ) + 10 / ( x - 4 ) = 2 x = 11.4 answer : d"
sciq
sciq_01_07247
What term is defined as the preserved remains or traces of organisms that lived during earlier ages?
[ "waste", "bones", "deposits", "fossils" ]
D
Fossils are the preserved remains or traces of organisms that lived long ago. They form mainly when minerals in water turn remains to stone. Fossils can be dated using methods such as carbon-14 dating or their positions in rock layers.
sciq
sciq_01_07165
A structure composed of two or more types of tissues that work together to perform the same function is called?
[ "Group", "System", "organ", "order" ]
C
The four types of tissues make up all the organs of the human body. An organ is a structure composed of two or more types of tissues that work together to perform the same function. Examples of human organs include the skin, brain, lungs, kidneys, and heart. Consider the heart as an example. Figure below shows how all ...
sciq
sciq_01_10483
Which layer is found below the lithosphere?
[ "asthenosphere", "stratosphere", "troposphere", "magnetosphere" ]
A
The asthenosphere is below the lithosphere. The asthenosphere is also in the upper mantle. This layer is solid, but it can flow and bend. A solid that can flow is like silly putty.
math_qa
mathqa_03_00110
what is the remainder when 46 * 49 is divided by 8 ?
[ "1", "3", "4", "6" ]
D
"we can make use of the rule : remainder of { ( a * b ) / n } } = remainder of ( a / n ) * remainder of ( b / n ) here remainder of { 46 * 49 ) / 8 } } = remainder of ( 46 / 8 ) * remainder of ( 49 / 8 ) = 6 * 1 = 6 answer : d"
sciq
sciq_01_08712
The colorless, odorless gas released when we breath is carbon dioxide. the harmful colorless, odorless gas released when matter is burned is what?
[ "acid monoxide", "carbon monoxide", "methane", "carbon trioxide" ]
B
Carbon Dioxide: Every time you exhale, you release carbon dioxide into the air. It's an odorless, colorless gas. Carbon dioxide contributes to global climate change, but it isn't directly harmful to human health. Carbon Monoxide: Carbon monoxide is produced when matter burns. It's a colorless, odorless gas that is very...
sciq
sciq_01_00001
What phenomenon makes global winds blow northeast to southwest or the reverse in the northern hemisphere and northwest to southeast or the reverse in the southern hemisphere?
[ "coriolis effect", "muon effect", "tropical effect", "centrifugal effect" ]
A
Without Coriolis Effect the global winds would blow north to south or south to north. But Coriolis makes them blow northeast to southwest or the reverse in the Northern Hemisphere. The winds blow northwest to southeast or the reverse in the southern hemisphere.
math_qa
mathqa_03_02139
the sale price sarees listed for rs . 540 after successive discount is 5 % and 2 % is ?
[ "288", "500", "502", "540" ]
C
"540 * ( 95 / 100 ) * ( 98 / 100 ) = 502 answer : c"
sciq
sciq_01_04251
What are the building blocks of dna?
[ "prokaryotes", "peptides", "nucleotides", "genes" ]
C
The building blocks of DNA are nucleotides. The important components of the nucleotide are a nitrogenous base, deoxyribose (5-carbon sugar), and a phosphate group (Figure 14.5). The nucleotide is named depending on the nitrogenous base. The nitrogenous base can be a purine such as adenine (A) and guanine (G), or a pyri...
ARC-Challenge
arc_04_02521
Drew knows that Earth is tilted on its axis. He also knows this tilt is responsible for the season that a region on Earth will experience. When the South Pole is tilted toward the Sun, what season will it be in Florida?
[ "fall", "spring", "summer", "winter" ]
D
null
sciq
sciq_01_05969
What makes viral stis more dangerous than other types?
[ "they are more contagious", "they are larger", "they are more severe", "they are incurable" ]
D
This is the Human Papilloma Virus, which causes a viral STI. Viral STIs can be especially dangerous, as they cannot be cured. Once you get one, it's yours for life. And also, it's the person's you give it to.
sciq
sciq_01_04610
What are the two types of charges?
[ "ions and neutrons", "positive and negative", "energy and mass", "volume and acceleration" ]
B
Conservation of charge is the fourth of the five conservation laws in physics. There are two charges, positive and negative, and the conservation of electric charge indicates that the total charge in the universe remains the same. In any closed system charge can be transferred from one body to another or can move withi...
medmcqa
medmcqa_05_00178
Passavant ridge is formed by
[ "Superior constrictor and palatopharyngeus", "Inferior constrictor and palatopharyngeus", "Superior constrictor and palatoglossus", "Inferior constrictor and palatoglossus" ]
A
Passavant ridge Near the superior margin of the pharynx, a few fibers of superior constrictor blend with a band of muscle fibers belonging to the palatopharyngeus muscle These fused fibers form a band or ring around the posterior wall and sidewalls of the nasopharyngeal isthmus When the soft palate is elevated this mus...
openbookqa
obqa_02_00843
The floating arrow on a compass always points away from the
[ "east", "north", "south", "west" ]
C
the floating arrow on a compass always points towards the north
medmcqa
medmcqa_05_02936
Memory T cells can be identified by using the following marker:
[ "CD45RA", "CD45RB", "CD45RC", "CD45RO" ]
D
CD 45 is called as Leukocyte common antigen (LCA) Location of cell Molecular marker All leucocytes CD45 and CD45RB Medullary thymocytes ('Naive' T- cells) CD45 RA and CD45RC Coical thymocytes (Memory T-cells) CD45RO
medmcqa
medmcqa_05_02449
Which of the following pigments are involved in free radical injury?
[ "Lipofuscin", "Melanin", "Bilirubin", "Hematin" ]
A
In aging or debilitating diseases the phospholipid end-products of membrane damage mediated by oxygen free radicals to get eliminated by intracellular lipid peroxidation. These, therefore, persist as collections of indigestible material in the lysosomes; thus lipofuscin is an example of residual bodies. Ref: Textbook o...
openbookqa
obqa_02_03441
What does the earth orbit that makes the seasons to change?
[ "pluto", "plasma star", "venus", "mercury" ]
B
a line graph is used for showing change over time
sciq
sciq_01_05911
These resources can be remade quickly, through natural processes
[ "fossil fuel", "renewable", "electric", "non-renewable" ]
B
From a human point of view, natural resources can be classified as either renewable or nonrenewable. Renewable resources, such as sunlight and living things, can be remade quickly by natural processes. Nonrenewable resources, such as fossil fuels and soil, cannot be remade or else take millions of years to remake.
ARC-Challenge
arc_04_02853
During which activity will light most likely be refracted?
[ "placing a scarf over the shade of a lamp", "viewing objects using the side mirror of a car", "looking at pebbles through the water in a stream", "using a flashlight to light up a forest path at night" ]
C
null
ARC-Challenge
arc_04_02182
The gravitational force exerted by an object depends on its
[ "volume.", "weight.", "mass.", "size." ]
C
null
medmcqa
medmcqa_05_04915
Which of the following is not seen in HIV involvement of CNS -
[ "Perivascular giant cell", "Vacuolar degeneration of posterior column", "Microglial nodule formation", "Inclusion bodies" ]
D
CNS involvement in AIDS Involvement of C.N.S. is a common and important manifestation of AIDS. In addition to the lymphoid system, the nervous system is a major target of HIV infection. Macrophages and microglial cells in the central nervous system that belongs to the monocyte and macrophages lineages are the predomin...
math_qa
mathqa_03_00524
5 , 7 , 11 , 18 , 33 , ( . . . )
[ "22", "35", "27", "63" ]
D
"explanation : 5 5 × 2 - 3 = 7 7 × 2 - 3 = 11 11 × 2 - 3 = 18 18 × 2 - 3 = 33 33 × 2 - 3 = 63 answer : option d"
sciq
sciq_01_01053
Amphibians have permeable skin which allows for the exchange of oxygen and carbon dioxide, what is this "breathing called?"
[ "cutaneous respiration", "variant respiration", "benign respiration", "aquatic respiration" ]
A
Characteristics of Amphibians As tetrapods, most amphibians are characterized by four well-developed limbs. Some species of salamanders and all caecilians are functionally limbless; their limbs are vestigial. An important characteristic of extant amphibians is a moist, permeable skin that is achieved via mucus glands t...
math_qa
mathqa_03_03228
in order to obtain an income of rs . 580 from 15 % stock at rs . 100 , one must make an investment of
[ "5363", "6240", "8700", "5600" ]
C
"to obtain rs . 10 , investment = rs . 100 . to obtain rs . 580 , investment = = rs . 8700 . answer : c"
sciq
sciq_01_08014
What's caused by damaged capillaries in the kidneys so the nephrons can no longer filter blood?
[ "kidney failure", "bacteria failure", "colon failure", "sponge failure" ]
A
Untreated diabetes may damage capillaries in the kidneys so the nephrons can no longer filter blood. This is called kidney failure. The only cure for kidney failure is to receive a healthy transplanted kidney from a donor. Until that happens, a patient with kidney failure can be kept alive by artificially filtering the...
ARC-Easy
arc_04_00808
Students measure the time for toy cars of different masses to roll down a hill. Which of the following units should the students use to measure time?
[ "centimeters", "grams", "milliliters", "seconds" ]
D
null
sciq
sciq_01_04325
Alkanes are nonpolar and therefore do not attract what?
[ "eons", "molecules", "atoms", "ions" ]
D
Alkanes are nonpolar; they do not attract ions.
ARC-Easy
arc_04_00349
A forest is flooded when a natural dam breaks, leaving the forest floor under two meters of water. Which animal is most affected by the flooding?
[ "a crow", "a rabbit", "a squirrel", "a butterfly" ]
B
null
sciq
sciq_01_07821
What does the color of soil indicate?
[ "density", "temperature", "chemical makeup", "fertility" ]
D
The color of soil indicates its fertility. Black or dark brown soils are rich in nitrogen and contain a high percentage of organic materials. Soils that are nitrogen poor and low in organic material might be gray, yellow, or red ( Figure below ). Soil with low organic material is not good for growing plants.
openbookqa
obqa_02_04094
A producer is relocated from a small pot into a wild forest. The producer is able to do this with relative ease:
[ "acclimate", "rhyme", "befriend", "float" ]
A
changes in an environment cause plants to adapt to survive
sciq
sciq_01_01975
Fruit begins to ripen because what gas is released?
[ "sulfur", "chloride", "hydrogen", "ethylene" ]
D
sciq
sciq_01_03043
What type of compound is hydrogen chloride?
[ "polar", "covalent", "ionic", "metal" ]
B
The largest, most complex covalent molecules have thousands of atoms. Examples include proteins and carbohydrates, which are compounds in living things. The smallest, simplest covalent compounds have molecules with just two atoms. An example is hydrogen chloride (HCl). It consists of one hydrogen atom and one chlorine ...
sciq
sciq_01_08665
What are broken down during digestion to provide the amino acids needed for protein synthesis?
[ "dietary proteins", "metabolytes", "sugars", "carbohydrates" ]
A
Dietary proteins are broken down during digestion to provide the amino acids needed for protein synthesis. Any extra proteins in the diet not needed for this purpose are used for energy or stored as fat. One gram of proteins provides 4 Calories of energy. Eating protein provides the amino acids for your cells to produc...
math_qa
mathqa_03_02780
express a speed of 56 kmph in meters per second ?
[ "10.56 mps", "17.56 mps", "97.56 mps", "15.56 mps" ]
D
"56 * 5 / 18 = 15.56 mps answer : d"
math_qa
mathqa_03_00769
the average mark of the students of a class in a particular exam is 80 . if 5 students whose average mark in that exam is 20 are excluded , the average mark of the remaining will be 92 . find the number of students who wrote the exam .
[ "15", "25", "30", "45" ]
C
"let the number of students who wrote the exam be x . total marks of students = 80 x . total marks of ( x - 5 ) students = 92 ( x - 5 ) 80 x - ( 5 * 20 ) = 92 ( x - 5 ) 360 = 12 x = > x = 30 answer : c"
medmcqa
medmcqa_05_02442
The structure which doesn't pass through the parotid gland?
[ "Facial nerve", "ICA", "Branch of ECA", "Retromandibular vein" ]
B
ICA doesn't pass through the parotid gland. Structures passing through the parotid gland are: Facial N. Retromandibular vein Ext. carotid aery Sympathetic plexus (a/w ECA)
ARC-Easy
arc_04_01799
There is a river at the base of Mount Tom. In the spring the water level is usually very high. In the summer it is lower. The higher level of water during the spring comes from
[ "hurricanes.", "melting snow.", "tornadoes.", "evaporating water." ]
B
null
openbookqa
obqa_02_03864
If a dog is hunting, then
[ "it can sense whales nearby", "it can sense toys around", "it is getting tired", "it can sense something using the olfactory" ]
D
smell is used for finding food by some animals
openbookqa
obqa_02_03049
we only have diamonds because of the existence of
[ "raw bacon", "machines", "pressure", "work" ]
C
extreme heat and pressure compact sediment into sedimentary rock
math_qa
mathqa_03_04709
a cistern can be filled by a tap in 3 hours while it can be emptied by another tap in 9 hours . if both the taps are opened simultaneously , then after how much time will the cistern get filled ?
[ "4.5 hrs", "5 hrs", "6.5 hrs", "7.2 hrs" ]
A
"net part filled in 1 hour = 1 / 3 - 1 / 9 = 2 / 9 therefore the cistern will be filled in 9 / 2 hours or 4.5 hours . answer : a"
math_qa
mathqa_03_04784
a room of 5 m 44 cm long and 3 m 74 cm broad is to be paved with squre tiles . find the least number of squre tiles required to cover the floor .
[ "233", "877", "279", "176" ]
D
"explanation : area of the room = 544 * 374 sq cm size of largest square tile = h . c . f of 544 cm and 374 cm = 34 cm area of 1 tile = 34 * 34 sq cm no . of tiles required = ( 544 * 374 ) / ( 34 * 34 ) = 176 answer : d ) 176"
ARC-Easy
arc_04_00324
Katia was listening to music on the radio. In order for the sound to be produced, the electrical energy must be converted into which type of energy?
[ "thermal energy", "magnetic energy", "chemical energy", "mechanical energy" ]
D
null
sciq
sciq_01_10426
When zinc metal is mixed with sulfur and heated, what is produced?
[ "zinc sulfide", "iron", "extraction sulfide", "methane sulfide" ]
A
In the course of a chemical reaction between a metal and a nonmetal, electrons are transferred from the metal atoms to the nonmetal atoms. For example, when zinc metal is mixed with sulfur and heated, the compound zinc sulfide is produced. Two valence electrons from each zinc atom are transferred to each sulfur atom.
sciq
sciq_01_02193
The actual amount (mass) of gasoline left in the tank when the gauge hits “empty” is a lot less in the summer than in the winter. the gasoline has the same volume as it does in the winter when the “add fuel” light goes on, but because the gasoline has expanded, there is what?
[ "less mass", "more mass", "lower gravity", "same mass" ]
A
Making Connections: Real-World Connections—Filling the Tank Differences in the thermal expansion of materials can lead to interesting effects at the gas station. One example is the dripping of gasoline from a freshly filled tank on a hot day. Gasoline starts out at the temperature of the ground under the gas station, w...
sciq
sciq_01_11009
Hormones produced by what gland in the neck increase the rate of metabolism in cells throughout the body?
[ "pituitary", "thymus", "kidney", "thyroid" ]
D
The thyroid gland is a large gland in the neck. Thyroid hormones increase the rate of metabolism in cells throughout the body. They control how quickly cells use energy and make proteins.
medmcqa
medmcqa_05_01147
Cytokine with predominant anti-inflammatory action is ?
[ "Interleukin 6", "GM-CSF", "TGF-b", "TNF-Alpha" ]
C
Ans. is 'c' i.e., TGF-b Proinflammatorv cytokines i) Major:- IL-1, TNF- alpha, IL-6 ii) Other:- IL-2, IL-4, IL-5, IL-6, IL-8, IL-11, IL-12, IL-15, IL-21, IL-23, IFN- gamma, GM-CSF Anti-inflammatory cytokines i) IL-4, IL-10, IL-13, and transforming growth factor b (TGF-b)
medmcqa
medmcqa_05_03400
A 45-year-old woman presents to the emergency department with a 1-week history of jaundice, anorexia, and right upper quadrant discomfort. On examination she is icteric, with a tender right upper quadrant and liver span of 14 cm. There is no shifting dullness or pedal edema and the heart and lungs are normal. On furthe...
[ "ratio of AST : ALT is 3 :1 and the AST is 500 U/L", "ratio of AST : ALT is 2 :1 and the AST is 250 U/L", "ratio of AST : ALT is 1 :1 and the AST is 500 U/L", "ratio of AST : ALT is 1 :1 and the AST is 250 U/L" ]
B
In alcoholic hepatitis, the AST:ALT ratio is usually 2:1, and the level of AST is usually < 300. When viral hepatitis or toxin-induced hepatitis causes jaundice, the AST:ALT ratio is usually 1:1, and the transaminases are usually > 500.
openbookqa
obqa_02_02476
Blood gets directed around beneath skin and bone by
[ "a person", "a vision", "a thought process", "long passages" ]
D
the circulatory system transports blood throughout the body
sciq
sciq_01_04151
What organ provides the integrative power that underlies the complex behavior of vertebrates?
[ "the brain", "the skin", "the heart", "the liver" ]
A
ARC-Easy
arc_04_01987
Where would animals and plants be most affected by a flood?
[ "low areas", "high areas", "warm areas", "cold areas" ]
A
null
openbookqa
obqa_02_00941
which of these will attract a magnet in a student's pocket?
[ "an old stapler pin", "a piece of gum", "all of these", "a piece of chicken" ]
A
if a magnet is attracted to a metal then that magnet will stick to that metal
sciq
sciq_01_07279
Snippet 3: the diploid cells resulting from karyogamy are short-lived and undergo meiosis, producing what?
[ "binary spores", "stunted spores", "haploid spores", "hyperactive spores" ]
C
medmcqa
medmcqa_05_00541
Which of the following anesthetic agent is contraindicated in a patient with raised intracranial pressure:
[ "Etomidate", "Thiopentone", "Propofol", "Ketamine" ]
D
Ans. (d) KetamineRef: KDT 6th ed. / 376* Please refer to above explanation.* Ketamine causes increase in all pressure i.e. intracranial, intraocular, intragastric and intravascular pressure.* Therefore, it is not used in raised ICT/IOT & h ypertension as it may increase the pressure to morbid levels.* Anesthetic agents...
medmcqa
medmcqa_05_03992
III nerve palsy with pupillary sparing is seen in -
[ "Craniopharyngioma", "Hypotension", "Aneurysm of post, communicating aery", "DM" ]
D
Pupil-sparing oculomotor nerve palsy is often assumed to be caused by ischemic injury such as hypeension and diabetes mellitus. Sometimes compressive lesion can cause pupil-sparing oculomotor nerve palsy with a sho interval from the onset of symptoms to diagnosis.
openbookqa
obqa_02_01627
What is the source of air?
[ "humans", "space", "chemistry", "nature" ]
D
nature is the source of natural resources
sciq
sciq_01_09255
Coral reefs and tropical rainforests are ecosystems known for what, contributing greatly to the species in existence on earth?
[ "spontaneous mutation", "mass migrations", "biodiversity", "commensalism" ]
C
How many species actually exist in the world? No one knows for sure because only a small percentage of them have already been discovered. Estimates range from 5 to 30 million total species currently in existence. Many of them live on coral reefs and in tropical rainforests (see Figure below ). These two ecosystems have...
medmcqa
medmcqa_05_00423
Which inhalational anesthetic agent has analgesic effect-
[ "Xenon", "Desflurane", "Isoflurane", "Sevoflurane" ]
A
Potent inhalational agent does not have analgesic effect. Carrier gases N2O and Xenon provides good analgesic.
openbookqa
obqa_02_01152
Trees grow growth-rings one time each year; so which of these is correct?
[ "a tree with nine rings is nine years old", "a tree with six rings is seven years old", "a tree with eight rings is five years old", "telling how old a tree is is impossible based on rings" ]
A
a tree growing a tree-growth ring occurs once per year
math_qa
mathqa_03_02629
a class is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width . find the least number of square tiles of equal size required to cover the entire floor of the class room ?
[ "115", "117", "116", "114" ]
B
explanation : length = 6 m 24 cm = 624 cm width = 4 m 32 cm = 432 cm hcf of 624 and 432 = 48 number of square tiles required = ( 624 x 432 ) / ( 48 x 48 ) = 13 x 9 = 117 . answer is b
sciq
sciq_01_05674
What brain structure is important in recognizing and recalling emotions?
[ "cerebral cortex", "amygdala", "thalmus", "pituitary" ]
B
openbookqa
obqa_02_02835
Undifferentiated cells in plants allow it to grow
[ "in clouds", "taller", "without sunlight", "without water" ]
B
specialized tissues at the ends of plant stems are used for growing taller by plants
sciq
sciq_01_10669
What basic cell structure is made up of a phospholipid bilayer and two layers of phospholipid molecules?
[ "cell membrane", "mitochondria", "cell cartilage", "nucleus" ]
A
The cell membrane is made up of a phospholipid bilayer, two layers of phospholipid molecules. Notice the polar head group of the phospholipid is attached to the phosphate, and the tails are two fatty acid chains. The head group and tails are attached by a glycerol backbone.
math_qa
mathqa_03_04223
p and q started a business investing rs . 85,000 and rs . 20,000 respectively . in what ratio the profit earned after 2 years be divided between p and q respectively ?
[ "17 : 6", "17 : 0", "17 : 4", "17 : 2" ]
C
"p : q = 85000 : 20000 = 17 : 4 . answer : c"
sciq
sciq_01_05731
Vascular plants evolved what basic structures to collect sunlight?
[ "roots", "leaves", "flowers", "stems" ]
B
Vascular plants evolved leaves to collect sunlight. At first, leaves were tiny and needle-like, which helped reduce water loss. Later, leaves were much larger and broader, so plants could collect more light.
math_qa
mathqa_03_00269
a fill pipe can fill 1 / 2 of cistern in 30 minutes . in how many minutes , it can fill 1 / 2 of the cistern ?
[ "15 min", "20 min", "25 min", "30 min" ]
D
"required time = 30 * 2 * 1 / 2 = 30 minutes answer is d"
ARC-Challenge
arc_04_02257
Which statement is the best description of what happens in the rock cycle?
[ "Rocks on old mountains are gradually weathered away while mountain building and volcanism form new mountains.", "Once formed, rocks stay in place until rocks above them are weathered away, and they reach the surface.", "As sedimentary rocks are buried deep below other rocks, they are changed by heat and pressu...
C
null