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sciq
sciq_01_10495
Where are protons and neutrons located?
[ "radius", "electron shell", "nucleus", "epidermis" ]
C
Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus. Because opposite electric charges attract each other, negative electrons are attracted to the positive nucleus. This force of attraction keeps electrons constantly moving through the oth...
medmcqa
medmcqa_05_00588
The commonest cause of lung abscess -
[ "Tuberculosis", "Congenital", "Hematogenous", "Aspirated oropharyngeal secretion" ]
D
​Lung abscess  The term pulmonary abscess describes a local suppurative process within the lung, characterized by necrosis of lung tissues. Etiology Aspiration is the most common cause, factors that portend an increased risk of aspiration include esophageal dysmotility, seizure disorders, and neurological condition...
openbookqa
obqa_02_01048
Light that can burn skin is produced by a
[ "flashlight", "laser", "light bulb", "fluorescent light" ]
B
a laser is used for producing light
openbookqa
obqa_02_01270
An iron horseshoe with red stripes is held over a paperclip and
[ "melts it", "drops it", "burns it", "yanks it" ]
D
a magnet attracts magnetic metals through magnetism
medmcqa
medmcqa_05_04597
Treatment of leukoplakia -
[ "Local excision", "Excision and radiotherapy", "Topical chemotherapy", "Repositioning of ill fitting dentures" ]
D
Treatment of oral leukoplakia Usually, all that is needed for the treatment of oral leukoplakia is just to remove the source of the irritation. If leukoplakia is caused by a rough edge of a tooth, filling or crown or by a denture that does not fit properly, the surface should be smoothed and the dental appliances rep...
ARC-Challenge
arc_04_02681
Which form of water is most likely to appear when the temperature is below freezing?
[ "fog", "rain", "snow", "clouds" ]
C
null
math_qa
mathqa_03_02614
the sum of number of boys and girls in a school is 900 . if the number of boys is x , then the number of girls becomes x % of the total number of students . the number of boys is ?
[ "50", "40", "60", "90" ]
D
we have x + x % of 900 = 900 x + x / 100 * 900 = 900 10 * x = 900 x = 90 answer is d
openbookqa
obqa_02_03830
A bee is a pollinating
[ "moving alive thing", "rock", "tree", "song" ]
A
A bee is a pollinating animal
medmcqa
medmcqa_05_04149
Commonest complication of Zenker&;s diveiculum is
[ "Dysphonia", "Gastroesophageal reflux", "Lung abscess", "Perforation" ]
C
Commonest complications are lung abcess and pneumonia. It occurs because of Regurgitation during night while turning neck. Othercomplications are abscess in the neck due to infection in the pouch, Carcinoma, Weight loss and cachexia. Reference: SRB's Manual of Surgery, 6th Edition, page no=422
medmcqa
medmcqa_05_00003
An 8-year old boy presents with swelling in mid-thigh region. On examination, femoral thickening was found with Codman's triangle. On aspiration, greyish white liquid was aspirated that showed atypical round cells with MIC-2 positivity. The most likely diagnosis is
[ "Osteosarcoma", "Ewing's sarcoma", "Tubercular osteomyelitis", "Pyogenic osteomyelitis" ]
B
Ans. b. Ewing's sarcoma Ewing's sarcoma: A type of primitive neuroectodermal tumour (PNET) On histopathological examination shows small round cells, which show positive immunohistochemical staining or CD-99 and MIC-2 gene Although the classical periosteal reaction seen in Ewing's sarcoma is onion peel appearance but so...
sciq
sciq_01_05103
Plants and algae maintain the atmosphere. during photosynthesis, they add oxygen and remove what?
[ "nitrogen", "carbon dioxide", "methane", "water" ]
B
Plants and algae maintain the atmosphere. During photosynthesis, they add oxygen and remove carbon dioxide.
sciq
sciq_01_06001
What planet in our solar system has a moon with volcanic activity?
[ "Mars", "Venus", "jupiter", "Saturn" ]
C
Earth is not the only active planetary body in the solar system. Io, one of Jupiter’s moons, is home to fantastic volcanic eruptions. Volcanism is much hotter than on Earth. Lava curtains and fountains are common. In this color image, the Galileo spacecraft spotted two volcanic plumes. One is spewing high above the pla...
sciq
sciq_01_09450
Biodiversity hot spots are prime candidates for protection because they are prone to what species fate?
[ "mutation", "extinction", "reduction", "accumulation" ]
B
sciq
sciq_01_07870
What can be hard or even impossible to perform in a scientific sense?
[ "hypothesises", "idea", "experiments", "theorys" ]
C
Experiments are sometimes hard or even impossible to do. For example, a scientist who is studying an extinct animal cannot experiment with the animal because it no longer exists. The scientist must rely instead on evidence in the natural world, such as fossils that the extinct animal left behind.
openbookqa
obqa_02_02400
A bear that has great strength, when compared to a bear with little strength, will likely be
[ "sickly", "objectively fit", "malnourished", "in poor health" ]
B
being stronger usually has a positive impact on an organism 's health
sciq
sciq_01_10078
What elements do lipids primarily consist of?
[ "helium, hydrogen , and oxygen", "iron, hydrogen , and oxygen", "silicon, hydrogen , and oxygen", "carbon, hydrogen, and oxygen" ]
D
Lipids are organic compounds that contain mainly carbon, hydrogen, and oxygen. They include substances such as fats and oils, as well as waxes, sterols, some vitamins (A, D, E and K) and phospholipids. Lipid molecules consist of fatty acids, with or without additional molecules. Fatty acids are organic compounds that h...
openbookqa
obqa_02_03831
If a creature is looking for things but is using something other than its eyes or nose, then it is likely
[ "condensing", "echolocating", "reproducing", "revolving" ]
B
echolocation is when some animals detect objects by hearing echoes by emitting sound
medmcqa
medmcqa_05_03991
In treatment of Pseudomonas infections, carbencillin is frequently combined with:
[ "Penicillin", "Gentamycin", "Ciprofloxacin", "Amoxycillin" ]
B
Gentamycin
sciq
sciq_01_08225
What mainly gives the body energy?
[ "fuel", "food", "sunlight", "water" ]
B
Food gives the body energy. You need energy for everything you do. The energy in food is measured in a unit called the Calorie.
sciq
sciq_01_07302
What do some animals use for shelter?
[ "living materials", "nonliving materials", "invisible materials", "indestructible materials" ]
B
sciq
sciq_01_00111
How many different amino acids make up proteins.
[ "25", "20", "14", "30" ]
B
There are 20 amino acids that make up proteins. With three bases per codon, there are 64 possible codons. This is more than enough to code for the 20 amino acids plus start and stop signals. You can see how to translate the genetic code in Figure below . Start at the center of the chart for the first base of each three...
sciq
sciq_01_00358
All animals that derive energy from food are classified as what?
[ "paleotrophs", "lifeforms", "heliotrophs", "heterotrophs" ]
D
Figure 15.2 All animals that derive energy from food are heterotrophs. The (a) black bear is an omnivore, eating both plants and animals. The (b) heartworm Dirofilaria immitis is a parasite that derives energy from its hosts. It spends its larval stage in mosquitos and its adult stage infesting the hearts of dogs and o...
sciq
sciq_01_02585
What are the proteins called that speed up biochemical reactions in cells?
[ "carbohydrates", "enzymes", "hormones", "peptides" ]
B
Enzymes are proteins that speed up biochemical reactions in cells. Antibodies are proteins that target pathogens for destruction.
sciq
sciq_01_09539
Gram-negative bacteria have a cell wall made of peptidoglycan, whereas gram-positive bacteria have a cell wall made of what?
[ "hydrolic acid", "solmization acid", "lipoteichoic acid", "choanocyte acid" ]
C
Gram-negative bacteria have a cell wall made of peptidoglycan, whereas Gram-positive bacteria have a cell wall made of lipoteichoic acid. Figure 22.19 Which of the following statements about the nitrogen cycle is false? a. Nitrogen fixing bacteria exist on the root nodules of legumes and in the soil. Denitrifying bacte...
math_qa
mathqa_03_02965
? % of 360 = 115.2
[ "277", "36", "64", "32" ]
D
? % of 360 = 115.2 or , ? = 115.2 × 100 / 360 = 32 answer d
sciq
sciq_01_10023
Meiosis and what process are both preceded by one round of dna replication; however, they differ in producing haploid or diploid daughter cells?
[ "photosynthesis", "fertilization", "mitosis", "cloning" ]
C
Figure 7.6 Meiosis and mitosis are both preceded by one round of DNA replication; however, meiosis includes two nuclear divisions. The four daughter cells resulting from meiosis are haploid and genetically distinct. The daughter cells resulting from mitosis are diploid and identical to the parent cell.
sciq
sciq_01_01710
The peripheral nervous system has major nerves that travel through every part of the body except which two places?
[ "brain and spinal cord", "lungs and spinal cord", "brain and heart", "muscles and brain" ]
A
All the other nervous tissues in the body are part of the peripheral nervous system. If you look again at Figure above , you can see the major nerves of the peripheral nervous system. They include nerves that run through virtually every part of the body, both inside and out, except for the brain and spinal cord.
sciq
sciq_01_01090
Molecules with a carboxyl group are called what?
[ "acetic acids", "Fatty acids", "catalyzed acids", "carboxylic acids" ]
D
Molecules with a carboxyl group are called carboxylic acids. As with aldehydes, the functional group in carboxylic acids is at the end of a carbon chain. Also as with aldehydes, the C atom in the functional group is counted as one of the C atoms that defines the parent hydrocarbon name. To name carboxylic acids, the pa...
ARC-Easy
arc_04_00782
In eukaryotic organisms, interaction between which organelles is most important for cell shape, tensile strength, and communication between cells?
[ "cytoskeleton and cell membrane", "cytoplasm and Golgi apparatus", "nucleus and endoplasmic reticulum", "ribosome and central vacuole" ]
A
null
math_qa
mathqa_03_04392
the compound ratio of 2 / 3 , 6 / 7 , 1 / 5 and 1 / 8 is given by ?
[ "7 / 98", "1 / 48", "1 / 98", "3 / 350" ]
D
"2 / 3 * 6 / 7 * 1 / 5 * 1 / 8 = 12 / 1400 = 3 / 350 answer : d"
sciq
sciq_01_05287
Which process changes rocks by heat and pressure?
[ "Changes", "sediments", "weathering", "metamorphism" ]
D
Metamorphism changes rocks by heat and pressure. These agents create an entirely new type of rock. Metamorphism changes rocks physically and/or chemically.
ARC-Easy
arc_04_00242
In an investigation, a student wants to see how a ball is affected by rolling it over a surface covered with sandpaper. In preparation for the trial, the student makes a list of the possible conditions that could affect the investigation. The student is most likely listing the
[ "constants.", "variables.", "controls.", "trials." ]
B
null
math_qa
mathqa_03_03801
the population of a town increases 22 % and 25 % respectively in two consecutive years . after the growth the present population of the town is 1220 . then what is the population of the town 2 years ago ?
[ "a", "b", "c", "d" ]
C
"explanation : formula : ( after = 100 denominator ago = 100 numerator ) 1220 * 100 / 122 * 100 / 125 = 800 answer : option c"
sciq
sciq_01_05849
The chromosomal theory of inheritance proposed that what reside on chromosomes?
[ "rna", "atoms", "genes", "molecules" ]
C
Chapter 13 1 Figure 13.3 No. The predicted frequency of recombinant offspring ranges from 0% (for linked traits) to 50% (for unlinked traits). 3 Figure 13.6 B. 4 A 6 C 8 B 10 C 12 D 14 The Chromosomal Theory of Inheritance proposed that genes reside on chromosomes. The understanding that chromosomes are linear arrays o...
sciq
sciq_01_08035
What two forces tend to keep an animal stationary and thus oppose locomotion?
[ "friction and gravity", "workload and gravity", "thickness and gravity", "stength and gravity" ]
A
math_qa
mathqa_03_03947
a shop produces sarongs . the daily average production is given by 5 n + 20 , where n is the number of workers aside from the owner . in the first k days , 500 units are produced , and then 5 workers are added to the team . after another k days , the cumulative total is 1300 . how many workers were part of the latter p...
[ "a", "b", "c", "d" ]
C
"the daily average production is given by 5 n + 20 - given in the first k days , 500 units are produced = ( 5 n + 20 ) k = 500 k = 500 / 5 n + 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 workers were added = 5 ( n + 5 ) + 20 = 5 n + 45 cumulative is 1300 . . thus for the current period ...
medmcqa
medmcqa_05_03900
A 60-year-old male patient on aspirin, nitrates, and a beta blocker, being followed for chronic stable angina, presents to the ER with a history of two to three episodes of more severe and long-lasting anginal chest pain each day over the past 3 days. His ECG and cardiac enzymes are normal. The best course of action of...
[ "Admit the patient and begin intravenous digoxin", "Admit the patient and begin intravenous heparin", "Admit the patient and give prophylactic thrombolytic therapy", "Admit the patient for observation with no change in medication" ]
B
This patient presents with unstable angina, a change from the previous chronic stable state in that chest pain has become more frequent and more severe. Intravenous heparin is indicated. Subcutaneous administration of low-molecular-weight heparin (such as enoxaparin) is an alternative. There is no role for digoxin, as ...
medmcqa
medmcqa_05_02266
According to WHO latest treatment of leprosy is -
[ "2 yrs. Or negative slit smear negative which ever is longer for multibacillary", "Life long treatment", "Six months treatment for paucibacillary", "Not specified" ]
C
According to WHO, Multibacillary :- MB blisterpacks for 12 months , within 18 months Paucibacillary :-PB Blisterpacks for 6 months ,within 9 months. Reference : Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 341
medmcqa
medmcqa_05_01564
Agent which on addition to a colony inhibits its growth and on removal the colony regrows is
[ "Bacteriostatic", "Bactericidal", "Antibiotic", "Antiseptic" ]
A
Ans. is 'a' i.e., Bacteriostatic Bacteriostatic . Agent is able to inhibit bacterial multiplication. . Multiplication resumes upon removal of agent. Bactericidal . Agent is able to kill the bacteria. . Action is irreversible ie, the killed organism can no longer reproduce, even after being removed from contact with the...
sciq
sciq_01_06186
Displacement is a vector quantity, which means it has both direction and what else?
[ "waves", "radiation", "magnitude", "rate" ]
C
What is the difference between distance and displacement? Whereas displacement is defined by both direction and magnitude, distance is defined only by magnitude. Displacement is an example of a vector quantity. Distance is an example of a scalar quantity. A vector is any quantity with both magnitude and direction. Othe...
sciq
sciq_01_04159
What color does red litmus paper turn in the presence of a base?
[ "green", "white", "blue", "purple" ]
C
Like strong acids, strong bases can be harmful to organisms and damaging to materials. Bases have a bitter taste and feel slimy to the touch. They can also burn the skin. Bases, like acids, can be identified with litmus paper. Bases turn red litmus paper blue.
sciq
sciq_01_09795
What forms when the metal sodium gives up an electron to the nonmetal chlorine?
[ "an ionic bond", "van der waals force", "covalent bond", "hydrogen bond" ]
A
An ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine.
openbookqa
obqa_02_01339
People eating meals or snacks containing substances are further processed in the
[ "reproductive system", "burgers and fries", "gastro tract", "ocular department" ]
C
the breaking down of food into simple substances occurs in the digestive system
openbookqa
obqa_02_01960
Light can easily be seen bouncing off of a
[ "paper bag", "pencil", "overhead sign", "cardboard box" ]
C
when light hits a reflective object , that light bounces off that object
sciq
sciq_01_09025
What is the term for the fast-moving air currents high in the troposphere?
[ "ocean streams", "global winds", "gale force winds", "jet streams" ]
D
Jet streams are fast-moving air currents high in the troposphere. They are also the result of unequal heating of the atmosphere. Jet streams circle the planet, mainly from west to east. The strongest jet streams are the polar jets. The northern polar jet is shown in Figure below .
math_qa
mathqa_03_02551
by investing in 16 % stock at 64 , one earns rs . 1500 . the investment made is :
[ "5760", "7667", "4445", "4566" ]
C
"explanation : to earn rs . , investment = rs . 64 . to earn rs . 1500 , investment = = rs . 5760 . answer : c ) 5760"
math_qa
mathqa_03_01939
if x is 20 percent more than y and y is 70 percent less than z , then x is what percent of z ?
[ "500 %", "250 %", "500 / 3 %", "36 %" ]
D
z = 100 ; y = 30 so x = 36 x as % of z = 36 / 100 * 100 = > 36 % answer will be ( d )
sciq
sciq_01_05768
What did darwin call the evolutionary concept of change in populations over generations?
[ "metabolism with modifications", "descent with modifications", "formation with modifications", "reproduction with modifications" ]
B
Wallace and Darwin both observed similar patterns in other organisms and independently conceived a mechanism to explain how and why such changes could take place. Darwin called this mechanism natural selection. Natural selection, Darwin argued, was an inevitable outcome of three principles that operated in nature. Firs...
sciq
sciq_01_02919
In biology, what is required for ecosystems to survive?
[ "minerals", "helium", "space", "energy" ]
D
In biology, energy is required for ecosystems to survive, as all living organisms need energy. Within an organism, energy is needed for growth and development of a biological cell or an organelle within that cell. Energy is also needed for all biochemical reactions within that cell. Therefore, energy is stored within c...
sciq
sciq_01_00484
The coccyx, or tailbone, results from the fusion of four small what?
[ "alangulam vertebrae", "rib vertebrae", "arsine vertebrae", "coccygeal vertebrae" ]
D
Regions of the Vertebral Column The vertebral column originally develops as a series of 33 vertebrae, but this number is eventually reduced to 24 vertebrae, plus the sacrum and coccyx. The vertebral column is subdivided into five regions, with the vertebrae in each area named for that region and numbered in descending ...
math_qa
mathqa_03_04228
a can complete a project in 20 days and b can complete the same project in 30 days . if a and b start working on the project together and a quits 5 days before the project is completed , in how many days total will the project be completed ?
[ "12", "15", "18", "21" ]
B
"a ' s rate is 1 / 20 of the project per day . b ' s rate is 1 / 30 of the project per day . the combined rate is 1 / 12 of the project per day . in the last 5 days , b can do 1 / 6 of the project . thus a and b must complete 5 / 6 of the project , which takes 10 days . the total number of days is 10 + 5 = 15 . the ans...
sciq
sciq_01_07005
Combining nonpolar olive oil and polar vinegar yields what type of mixture?
[ "heterogeneous", "homogeneous", "omnigeneous", "amorphous" ]
A
Another familiar example is the mixing of vinegar and olive oil. Olive oil is a nonpolar substance, while vinegar (which is mostly water and acetic acid) is polar. The result is a heterogeneous mixture that exhibits a bilayer.
sciq
sciq_01_09512
Electromagnets can be turned on or off and their strength can be changed by controlling what?
[ "electric current", "powered current", "steady current", "inducing current" ]
A
Electromagnets can be turned on or off and their strength can be changed by controlling the electric current.
openbookqa
obqa_02_03425
By plugging in the cord you can supply power to
[ "a garden gnome", "a rock", "the sun", "a hairdryer" ]
D
when an electrical conductor is plugged into an outlet , a circuit is completed
math_qa
mathqa_03_00327
a batsman scored 120 runs which included 3 boundaries and 8 sixes . what % of his total score did he make by running between the wickets
[ "30 %", "50 %", "60 %", "80 %" ]
B
"number of runs made by running = 110 - ( 3 x 4 + 8 x 6 ) = 120 - ( 60 ) = 60 now , we need to calculate 60 is what percent of 120 . = > 60 / 120 * 100 = 50 % b"
openbookqa
obqa_02_02964
Amphibians undergo changes in structure of being in that
[ "salamanders can regrow their tails", "salamanders can lose their tails", "frogs can breathe air and water", "they begin as a different looking being" ]
D
shale can be metamorphosed into slate by increased pressure
sciq
sciq_01_04246
The electron beam scans the surface of the sample, usually coated with a thin film of which metal?
[ "copper", "gold", "platinum", "silver" ]
B
sciq
sciq_01_01928
Which side of the heart does blood from the lungs enter into?
[ "left ventricle", "left atrium", "right ventricle", "right atrium" ]
B
Blood from the lungs enters the left atrium of the heart. The left atrium pumps the blood to the left ventricle, which pumps it to the body. This loop is represented by the red arrows in Figure above .
sciq
sciq_01_08410
Instead of a nervous system, plant responses are generally controlled by what type of molecules, which serves as chemical messengers?
[ "enzymes", "sugars", "hormones", "receptors" ]
C
Like all organisms, plants detect and respond to stimuli in their environment. Unlike animals, plants can’t run, fly, or swim toward food or away from danger. They are usually rooted to the soil. Instead, a plant’s primary means of response is to change how it is growing. Plants also don’t have a nervous system to cont...
medmcqa
medmcqa_05_03940
Positive head impulse test is suggestive of ?
[ "Injury to vestibular nuclei", "Injury to peripheral vestibular nerve", "Lesion in the brain stem", "Injury to Occulomotor nerve" ]
B
Ans. is `b' i.e., Injury to peripheral vestibular nerve Head Impulse Test It is also called head thrust test. It is test for the diagnosis of injury to vestibular nerve which forms the peripheral vestibular pathway. Clinician asks the patient to fix his gaze on a target and then perform passive horizontal and veical he...
math_qa
mathqa_03_02238
a train overtakes two persons who are walking in the same direction to that of the train at 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively . what is the length of the train ?
[ "62 m", "54 m", "50 m", "55 m" ]
C
explanation : let x is the length of the train in meter and v is its speed in kmph x / 9 = ( v - 2 ) ( 10 / 36 ) - - - ( 1 ) x / 10 = ( v - 4 ) ( 10 / 36 ) - - - ( 2 ) dividing equation 1 with equation 2 10 / 9 = ( v - 2 ) / ( v - 4 ) = > 10 v - 40 = 9 v - 18 = > v = 22 substituting in equation 1 , x / 9 = 200 / 36 = >...
math_qa
mathqa_03_03002
mr . kramer , the losing candidate in a two - candidate election , received 942,568 votes , which was exactly 30 percent of all votes cast . approximately what percent of the remaining votes would he need to have received in order to have won at least 50 percent of all the votes cast ?
[ "10 %", "12 %", "15 %", "29 %" ]
D
let me try a simpler one . lets assume that candidate got 30 % votes and total votes is 100 . candidate won = 30 remaining = 70 to get 50 % , candidate requires 20 votes from 100 which is 20 % and 20 votes from 70 . 20 / 70 = 2 / 7 = . 285 = 28.5 % which is approx 29 % . hence the answer is d .
medmcqa
medmcqa_05_01823
Ram Devi presented with generalized edema sweating and ushing tachycardia and fever after bee sting. This is
[ "T cell mediated cytotoxicity", "IgE mediated reaction", "IgG mediated reaction", "IgA mediated hypersensitivity reaction" ]
B
The symptoms of the patient are d/t hypersensitivity type I reaction Type I is mediated by IgE and it airs up within minutes. The symptoms range from rashes to anaphylactic shock with vasodilatory hypotension and bronchiolar spasm. Examples of type I Eczema* Hay fever* Asthma* Anaphylactic shock* Urticaria* A cute der...
sciq
sciq_01_05484
What do you call the strands of dna wrapped around proteins, which are located inside the nucleus?
[ "fibrils", "chromosomes", "receptors", "ribosomes" ]
B
Inside of the nucleus, you will find the chromosomes . Chromosomes are strands of DNA wrapped around proteins. They contain genes , or small units of genetic material (DNA) that contains the code for the creation of a protein. Human cells have 46 chromosomes (23 pairs). There are hundreds to thousands of genes on each ...
sciq
sciq_01_10021
Objects moving at different speeds, in different directions have different what?
[ "velocities", "vibrations", "electrons", "protons" ]
A
Objects have the same velocity only if they are moving at the same speed and in the same direction. Objects moving at different speeds, in different directions, or both have different velocities.
openbookqa
obqa_02_00713
Which might you find in a zoo?
[ "a Sunda Colugo", "a Sneezewort", "a sousaphone", "a Picasso" ]
A
some animals live in zoo exhibits
math_qa
mathqa_03_02112
the least number which must be subtracted from 820 to make it exactly divisible by 9 is :
[ "a", "b", "c", "d" ]
C
"on dividing 820 by 9 , we get remainder = 1 therefore , required number to be subtracted = 1 answer : c"
ARC-Easy
arc_04_00043
Which of these will best separate iron filings from sand?
[ "water", "a magnifying glass", "a magnet", "rubbing alcohol" ]
C
null
sciq
sciq_01_06594
What is energy from the sun called?
[ "kinetic energy", "potential energy", "thermodynamic energy", "solar energy" ]
D
sciq
sciq_01_03141
Red algae and green algae are the closest relatives of what?
[ "transfer plants", "water plants", "arctic plants", "land plants" ]
D
28.5 Red algae and green algae are the closest relatives of land plants.
sciq
sciq_01_10984
They had demonstrated that particles smaller than bacteria cause what?
[ "blood", "disease", "damage", "flight" ]
B
Viruses are so small that they can be seen only with an electron microscope. Before electron microscopes were invented, scientists knew viruses must exist. How did they know? They had demonstrated that particles smaller than bacteria cause disease.
math_qa
mathqa_03_00824
the largest four digit number which is a multiple of 8 , 10,12 and 15 is :
[ "9960", "9950", "9940", "9930" ]
A
"lcm = 120 9999 / 120 = 83 83 * 120 = 9960 answer : a"
sciq
sciq_01_03662
Water can be boiled to kill giardia and most other what?
[ "parasites", "pathogens", "germs", "bacteria" ]
B
Different pathogens spread in different ways. Some pathogens spread through food. They cause food borne illnesses, which are discussed in a previous concept. Some pathogens spread through water. Giardia lamblia is one example. Water can be boiled to kill Giardia and most other pathogens.
sciq
sciq_01_02623
Scientists utilize what natural process to teach cranes born in captivity to migrate along safe routes?
[ "neuroimaging", "expediting", "imprinting", "natural selection" ]
C
ARC-Easy
arc_04_01506
Many people like to use microwave ovens rather than traditional ovens. The main reason for this is that microwave ovens
[ "take less time to cook food than regular ovens do.", "get hotter than regular ovens.", "do not leave spattered grease or food on the inside.", "cannot overcook food." ]
A
null
openbookqa
obqa_02_01963
A creature can hide in plain sight from predators because
[ "it burns", "it misdirects", "it cries", "it stinks" ]
B
camouflage is a kind of protection against predators
openbookqa
obqa_02_01428
Aerial maps represent what feature using dark green?
[ "the slopes of the Rocky Mountains", "underwater ocean forests and coral", "trees packed close together", "The great northwestern plains" ]
C
a dense forest environment is often dark in color
sciq
sciq_01_07847
What happened to chemical reactions when temperature increases?
[ "it slows down for a short time then speeds up", "it becomes slower", "it became faster", "it stays the same" ]
C
Temperature increases. Chemical reactions are faster at higher temperatures.
sciq
sciq_01_11535
What do cells produce as they age?
[ "carcinogens", "wrinkles", "proto-oncogenes", "oxidants" ]
C
medmcqa
medmcqa_05_01447
Modafinil is used as an adjunct in the treatment of? (DNB 2012-section-1)
[ "Sleep apnea syndrome", "Narcolepsy", "ADHD", "Shift work disorder" ]
A
Ans. (a) Sleep apnea syndrome Ref'.Harrison's 18/e, ch 27 Sleep apnea syndrome-Modafinil is used as an adjunct Narcolepsy- Modafinil is drug of choice
sciq
sciq_01_09208
What anatomical system is made up of neurons and glia?
[ "reproductive system", "lymphatic system", "digestive system", "nervous system" ]
D
CHAPTER SUMMARY 35.1 Neurons and Glial Cells The nervous system is made up of neurons and glia. Neurons are specialized cells that are capable of sending electrical as well as chemical signals. Most neurons contain dendrites, which receive these signals, and axons that send signals to other neurons or tissues. There ar...
math_qa
mathqa_03_02578
a train 220 m long is running with a speed of 90 km / hr . in what time will it pass a bus that is running with a speed of 60 km / hr in the direction opposite to that in which the train is going ?
[ "4.37", "5.28", "6.75", "8" ]
B
"speed of train relative to bus = 90 + 60 = 150 km / hr . = 150 * 5 / 18 = 125 / 3 m / sec . time taken to pass the bus = 220 * 3 / 125 = 5.28 sec . answer : b"
openbookqa
obqa_02_02661
what is a simple way to determine the age a tree?
[ "by counting its branches", "by counting its round inner markings", "by counting its leaves", "by counting its roots" ]
B
a tree growing a tree-growth ring occurs once per year
ARC-Easy
arc_04_00734
Which effect do rapidly cooling temperatures have on the water cycle?
[ "Water droplets evaporate into vapor.", "Water vapor condenses into droplets.", "Condensation evaporates into precipitation.", "Precipitation condenses into water droplets." ]
B
null
medmcqa
medmcqa_05_00040
At 8 weeks postpaum, uterus should weigh about
[ "100 grams", "500 grams", "700 grams", "900 grams" ]
A
During pregnancy, uterus weighs about 1000g At the end of 6weeks ,it's measurement is almost similar to the prepregnant state which is about 60g . Decrease in size of uterus is seen with serial MRI Ref: Dutta Obs 9e pg 137.
math_qa
mathqa_03_00878
gopi gives rs . 90 plus one turban as salary to his servant for one year . the servant leaves after 9 months and receives rs . 45 and the turban . find the price of the turban .
[ "27", "36", "29", "90" ]
D
"let the price of turban be x . thus , for one year the salary = ( 90 + x ) for 9 months he should earn 3434 ( 90 + x ) . now he gets one turban and rs . 45 . thus , 3434 ( 90 + x ) = 45 + x or 270 + 3 x = 180 + 4 x or x = 90 answer : d"
math_qa
mathqa_03_04713
a man is 26 years older than his son . in two years , his age will be twice the age of his son . the present age of the son is ?
[ "16", "19", "15", "24" ]
D
"let the son ' s present age be x years . then , man ' s present age = ( x + 26 ) years . ( x + 26 ) + 2 = 2 ( x + 2 ) x + 28 = 2 x + 4 = > x = 24 . answer : d"
sciq
sciq_01_02038
Each group of organisms went through its own evolutionary journey, called what?
[ "zoology", "superfamily", "anomalous", "phylogeny" ]
D
CHAPTER SUMMARY 20.1 Organizing Life on Earth Scientists continually gain new information that helps understand the evolutionary history of life on Earth. Each group of organisms went through its own evolutionary journey, called its phylogeny. Each organism shares relatedness with others, and based on morphologic and g...
math_qa
mathqa_03_04443
how many multiples of 8 are less than 4500 , and also multiples of 12 ?
[ "104.6", "187.5", "625.6", "450.5" ]
B
"lcm of 8 & 12 = 24 tried dividing 4500 by 24 got quotient 187.5 ' so b is answer"
sciq
sciq_01_10471
What machine is used to determine the calories in food, as well as the average heat yield from burning various grades of coal and oil?
[ "thermometer", "calorimeter", "radio telescope", "alethiometer" ]
B
Though not particularly beautiful machines, calorimeters are incredibly useful ones. They are used to determine the calories (food energy) in food, as well as the average heat yield from burning various grades of coal and oil. The price of coal is often dependent on the heat yield from samples burned in a calorimeter.
sciq
sciq_01_11305
What is the type of volcano with a tall cone shape that you picture when picturing a volcano?
[ "composite", "active", "inactive", "advanced" ]
A
A composite volcano forms the tall cone shape you usually think of when you think of a volcano. Shield volcanoes are huge, gently sloping volcanoes. Cinder cones are small, cone-shaped volcanoes.
math_qa
mathqa_03_03125
if there are 200 questions in a 3 hr examination . among these questions are 50 type a problems , which requires twice as much as time be spent than the rest of the type b problems . how many minutes should be spent on type a problems ?
[ "72 min", "62 min", "70 min", "74 min" ]
A
"x = time for type b prolems 2 x = time for type a problem total time = 3 hrs = 180 min 150 x + 50 * 2 x = 180 x = 180 / 250 x = 0.72 time taken for type a problem = 50 * 2 * 0.72 = 72 min answer : a"
sciq
sciq_01_00887
Mycorrhizae functions as a physical barrier to what?
[ "pathogens", "parasites", "vaccines", "bacteria" ]
A
Mycorrhizae: The Symbiotic Relationship between Fungi and Roots A nutrient depletion zone can develop when there is rapid soil solution uptake, low nutrient concentration, low diffusion rate, or low soil moisture. These conditions are very common; therefore, most plants rely on fungi to facilitate the uptake of mineral...
sciq
sciq_01_09811
Continually increasing the pressure on the liquid will eventually cause the substance to do what?
[ "erode", "explode", "transform", "solidify" ]
D
Start right above point on the temperature axis and follow the red line vertically. At very low pressure, the particles of the substance are far apart from one another and the substance is in the gas state. As the pressure is increased, the particles of the substance are forced closer and closer together. Eventually th...
math_qa
mathqa_03_03070
two trains are moving in opposite directions @ 60 kmph and 90 kmph . their length are 1.10 km and 0.9 km . the time taken by the slower train to cross faster train in second is ?
[ "25 sec", "30 sec", "48 sec", "36 sec" ]
C
"relative speed = 60 + 90 = 150 * 5 / 18 = 125 / 3 m / s distance covered = 1.10 + 0.9 = 2 km = 2000 m required time = 2000 * 3 / 125 = 48 sec answer is c"
sciq
sciq_01_03902
What is the main greenhouse gas causing global warming?
[ "sulfur", "carbon dioxide", "nitrogen", "carbon monoxide" ]
B
Carbon dioxide is the main greenhouse gas causing global warming. There are several possible ways to reduce carbon dioxide emissions. They include cap-and-trade systems, carbon taxes, and carbon sequestration.
sciq
sciq_01_10217
What are the structural and functional units of the nervous system, which transmit nerve impulses to other cells?
[ "ions", "neurons", "axions", "electrons" ]
B
Neurons are the structural and functional units of the nervous system. They consist of a cell body, dendrites, and axon. Neurons transmit nerve impulses to other cells. Types of neurons include sensory neurons, motor neurons, and interneurons.
openbookqa
obqa_02_03901
oceans contains most of earth 's
[ "wet sustenance", "trees", "clouds", "shoes" ]
A
oceans contains most of earth 's water
math_qa
mathqa_03_01826
378 × ? = 252
[ "2 / 3", "3 / 4", "1 / 2", "2 / 8" ]
A
"explanation : 378 × ? = 252 ? = 252 / 378 = 126 / 189 = 14 / 21 = 2 / 3 answer is a"
medmcqa
medmcqa_05_01520
Muscle glycogen stores can NOT be used to provide glucose into the circulation due to lack of:
[ "Glucose-6-phosphate dehydrogenase", "Glutamate dehydrogenase", "Glucose-6-phosphatase", "Glucokinase" ]
C
Glucose 6-phosphataseIt is an enzyme that hydrolyzes glucose-6-phosphate resulting in the creation of a phosphate group and free glucose.Glucose is then expoed from the cell glucose transpoer membrane proteins.This catalysis completes the final step in gluconeogenesis and glycogenolysis and therefore plays a key role i...