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7.76k
sciq
sciq_01_04116
Burning of methane is a type of what, which involves the breaking and forming of bonds?
[ "chemical reaction", "liquid reaction", "physical reaction", "toxic reaction" ]
A
An example of a chemical reaction is the burning of methane. In this chemical reaction, the reactants are methane (CH 4 ) and oxygen (O 2 ), and the products are carbon dioxide (CO 2 ) and water (H 2 O). A chemical reaction involves the breaking and forming of chemical bonds. When methane burns, bonds break in the meth...
sciq
sciq_01_00462
Frequency and intensity are two measurable properties of what?
[ "heat", "wave", "troughs", "lines" ]
B
All waves can be defined in terms of their frequency and intensity.
openbookqa
obqa_02_02762
if a beach ball explodes, which of these would be given off?
[ "a flock of geese", "a ton of sand", "a release of air", "a release of doves" ]
C
a beach ball contains gas
ARC-Easy
arc_04_01341
What type of inheritance controls blood types in humans?
[ "incomplete dominance", "polygenic inheritance", "multiple alleles", "recessive genes" ]
C
null
medmcqa
medmcqa_05_03814
Which vitamin deficiency is caused by eating large quantities of raw eggs
[ "Vitamin H", "Vitamin C", "Vitamin B5", "Vitamin B6" ]
A
Biotin (Vitamin B7) is also called vitamin H. Raw eggs contain avidin which binds with biotin and inhibits it. When egg is boiled / cooked avidin is denatured and binding to biotin is reduced.
ARC-Easy
arc_04_01270
On a field trip, a student holds a frog and reports that it has slippery skin. This is an example of
[ "a measurement", "a prediction", "an explanation", "an observation" ]
D
null
sciq
sciq_01_06819
Do metals tend to gain electrons or lose electrons in chemical reactions?
[ "lose electrons", "same number of electrons", "develop electrons", "gain electrons" ]
A
Metallic character refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies. Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. By following the trend summary ...
openbookqa
obqa_02_04426
Foxes eat
[ "wolves", "mice", "man", "bears" ]
B
predators eat prey
openbookqa
obqa_02_02673
What job site would most likely utilize powerful magnets that use electricity?
[ "a grocery store", "a gymnasium", "a scrap yard", "an office" ]
C
electromagnets can be powered by electricity
medmcqa
medmcqa_05_02087
Nitric Oxide synthesised from:
[ "Arginine", "Citrulline", "Alanine", "Cysteine" ]
A
Ans. A. ArginineSynthesis of Nitric Oxide
math_qa
mathqa_03_02169
how many words , with or without meaning , can be formed using all letters of the word red using each letter exactly once ?
[ "6", "7", "8", "9" ]
A
the word red has exactly 3 letters which are all different . therefore the number of words that can be formed = number of permutations of 3 letters taken all at a time . = p ( 3 , 3 ) = 3 ! = 3 x 2 × 1 = 6 answer : a
medmcqa
medmcqa_05_02562
Intraocular pressure is increased by which anesthetic
[ "Ketamine", "O2", "N20", "Isoflurane" ]
A
Ketamine may be contraindicated in patients with an open eye injury or other ophthalmologic disorder, in which a ketamine-induced increase in intraocular pressure would be detrimental. ketamine increases all the pressures - blood pressure intracranial pressure intragastric pressure intraocular pressure Ref: Miller's an...
openbookqa
obqa_02_00977
An example of a mixture is
[ "gin and tonic martini", "plant potted in soil", "pebbles on a sandy beach", "a leaf that fell in water" ]
A
An example of a mixture is clay mixed together
math_qa
mathqa_03_01300
a train covers a distance of 6 km in 10 min . if it takes 12 sec to pass a telegraph post , then the length of the train is ?
[ "120 m", "180 m", "240 m", "220 m" ]
A
"speed = ( 6 / 10 * 60 ) km / hr = ( 36 * 5 / 18 ) m / sec = 10 m / sec . length of the train = 10 * 12 = 120 m . answer : a"
math_qa
mathqa_03_02924
a man ' s speed with the current is 15 km / hr and the speed of the current is 2.8 km / hr . the man ' s speed against the current is ?
[ "9.4", "20", "50", "30" ]
A
"man ' s speed with the current = 15 km / hr = > speed of the man + speed of the current = 15 km / hr speed of the current is 2.8 km / hr hence , speed of the man = 15 - 2.8 = 12.2 km / hr man ' s speed against the current = speed of the man - speed of the current = 12.2 - 2.8 = 9.4 km / hr answer is a ."
medmcqa
medmcqa_05_00832
Which colonic polyps have the least malignant potential:
[ "Turcot's syndrome", "Gardner's syndrome", "Juvenile polyp", "Familial adenomatous polyposis" ]
C
- Juvenile polyps & Peutz-Jaghers polyps are hamaomatous polyps which are non-neoplastic in nature. - FAP & its variants like Gardner's syndrome & Turcot's syndrome are highly associated with neoplastic adenomas which have high potential to progress into malignant cancer.
medmcqa
medmcqa_05_03122
Post transplant lymphoma is ?
[ "T cell", "B cell", "Null cell", "NK cell" ]
B
B cell Nearly 1 to 20% of people who receive a solid organ transplant develop a lymphoma. - Lymphomas have also been repoed (though less .frequently) after bone-marrow transplants .for other disorders. Why does it happen? - Post-transplant lymphomas are almost always related to infection by the Epstein Barr Virus (EBV)...
sciq
sciq_01_05584
What are plants in the diploid generation called?
[ "haplocytes", "keratinocytes", "monocots", "sporophytes" ]
D
Plants in the diploid generation are called sporophytes . They form from the fertilization of gametes. They reproduce asexually. They have a structure called a sporangium that produces haploid spores by meiosis. Spores develop into the haploid generation. Then the cycle repeats.
sciq
sciq_01_02739
What is the name of anything that has mass and takes up space?
[ "matter", "solid", "carbon", "depth" ]
A
sciq
sciq_01_09842
What are the two layers of the skin?
[ "sebaceous and salivary", "epidermis and dermis", "dermis and epithelial", "epithelial and endometrial" ]
B
Skin is made up of two layers, the epidermis and the dermis.
sciq
sciq_01_05012
Multiplying the linear momentum of a spinning object by the radius calculates what?
[ "total momentum", "angular torque", "angular momentum", "applied momentum" ]
C
The angular momentum of a spinning object can be found in two equivalent ways. Just like linear momentum, one way, shown in the first equation, is to multiply the moment of inertia, the rotational analog of mass, with the angular velocity. The other way is simply multiplying the linear momentum by the radius, as shown ...
ARC-Easy
arc_04_01621
What is involved in creating genetically modified bacteria?
[ "allowing them to reproduce freely", "changing their food source", "using biotechnology techniques", "growing them on selected plants" ]
C
null
sciq
sciq_01_04626
What is the term for the measure of the force of gravity pulling down on an object?
[ "weight", "mass", "pressure", "density" ]
A
Weight is a measure of the force of gravity pulling down on an object. It depends on the object’s mass, which is how much matter the object contains. It also depends on the downward acceleration of the object due to gravity, which is the same all over Earth. Weight can be represented by the equation:.
sciq
sciq_01_08905
A rounded hollow carved in the side of a mountain by a glacier is known as?
[ "a crest", "a cirque", "a cavern", "a crater" ]
B
A cirque is a rounded hollow carved in the side of a mountain by a glacier. The highest cliff of a cirque is called the headwall.
openbookqa
obqa_02_04881
What does the earth orbit that causes the seasons to change?
[ "venus", "pluto", "neptune", "plasma star" ]
D
An example of a seasonal change is an animal growing thick fur for keeping warm in the winter
medmcqa
medmcqa_05_01451
Nonshivering thermogenesis in adults is due to:
[ "Thyroid hormone", "Brown fat between the shoulders", "Noradrenaline", "Muscle metabolism" ]
A
Thyroid hormone Increases the BMR which is responsible for Non-shivering thermogenesis in adults. In children & Infants Brown fat is responsible for thermogenesis. Shivering thermogenesis is by muscle metabolism, heat is produced by muscle contraction.
medmcqa
medmcqa_05_04846
In nonunion of scaphoid vescularized muscle pedicle graft is taken from.
[ "Pronator teris", "Brachioradialis", "Pronator quadratus", "Extensor pollicis longus" ]
C
C i.e. Pronator quadrates Blood supply of scaphoid enters distally mainly through the dorsal ridge (spiral groove, narrow non aicular region in the waist) and proximal segment is supplied by retrograde intraosseous blood flow from distal to proximal. This unusual pattern of vascularity is responsible for higher probabi...
sciq
sciq_01_11319
What does rising and sinking air influence in a region?
[ "precipitation", "erosion", "temperature", "tides" ]
A
Rising and sinking air can influence the precipitation of a region.
openbookqa
obqa_02_03504
Water is bubbling. What characteristic is it likely to have?
[ "intense heat", "cool water", "melted water", "easier to transport" ]
A
if liquid is boiling then that liquid is hot
ARC-Easy
arc_04_00490
Which kind of rock is produced by deposition and cementation?
[ "marble, a metamorphic rock", "sandstone, a sedimentary rock", "granite, an intrusive igneous rock", "pumice, an extrusive igneous rock" ]
B
null
openbookqa
obqa_02_00377
The moon's surface
[ "has asteroid impact marks", "is smooth all over", "is filled with lakes", "has a stronger gravitational pull than Earth" ]
A
the lunar surface contains many craters
openbookqa
obqa_02_01923
When a wildfire happens what catches fire?
[ "rocks", "timberland", "water", "rivers" ]
B
wildfire is when a forest catches fire
sciq
sciq_01_09729
What describe the fraction or percentage of a mixture that is made up of a particular substance.
[ "molecular scale", "solute level", "atomic weight", "mole fractions" ]
D
Mole fractions describe the fraction or percentage of a mixture that is made up of a particular substance.
math_qa
mathqa_03_01153
a sum of money at simple interest amounts to rs . 1717 in 1 year and to rs . 1734 in 2 years . the sum is :
[ "rs . 1200", "rs . 1690", "rs . 1600", "rs . 1700" ]
D
"s . i . for 1 year = rs . ( 1734 - 1717 ) = rs . 17 . principal = rs . ( 1717 - 17 ) = rs . 1700 . answer : option d"
sciq
sciq_01_08266
What was diorite commonly used for in ancient civilizations?
[ "art", "medicine", "school", "currency" ]
A
An example of a physical model is a drawing of the layers of Earth ( Figure below ). A drawing helps us to understand the structure of the planet. Yet there are many differences between a drawing and the real thing. The size of a model is much smaller, for example. A drawing also doesn’t give good idea of how substance...
medmcqa
medmcqa_05_03421
Anaphylactic shock is caused by w hich type of hypersensitivity reaction?
[ "I", "II", "III", "IV" ]
A
Ans. is 'a' i.e., IAnaphylactic shock is caused by type 1 Hypersensitivity reaction.
medmcqa
medmcqa_05_00499
Asthenozoospermia is
[ "Increased abnormal forms of sperm", "Decreased sperm motility", "Absence of sperms in semen", "Increased white cells in semen" ]
B
Asthenozoospermia is decreased sperm motility.
sciq
sciq_01_09736
In an acidic medium, add which ions to balance?
[ "magnesium", "calcium", "hydrogen", "helium" ]
C
Now the hydrogen atoms need to be balanced. In an acidic medium, add hydrogen ions to balance . In this example, fourteen H + ions will be added to the reactant side.
math_qa
mathqa_03_01119
if x + ( 1 / x ) = 5 , what is the value of e = x ^ 2 + ( 1 / x ) ^ 2 ?
[ "e = 21", "e = 22", "e = 23", "24" ]
C
"squaring on both sides , x ^ 2 + ( 1 / x ) ^ 2 + 2 ( x ) ( 1 / x ) = 5 ^ 2 x ^ 2 + ( 1 / x ) ^ 2 = 23 answer : c"
sciq
sciq_01_08250
What is the heart's main task?
[ "make blood", "pump blood", "clean blood", "split blood cells" ]
B
Tissues may be organized into organs. An organ is a structure composed of two or more types of tissue that work together to do a specific task. For example, the heart is an organ. It consists of muscle, nerve, and other types of tissues. Its task is to pump blood.
math_qa
mathqa_03_00181
three solid cubes of sides 1 cm , 6 cm and 8 cm are melted to form a new cube . find the surface area of the cube so formed
[ "486'", "366'", "299'", "278'" ]
A
explanation : volume of new cube = = edge of new cube = = 9 cm surface area of the new cube = ( 6 x 9 x 9 ) = 486 answer : a ) 486
sciq
sciq_01_08122
What type of landscape has grasslands with scattered trees, are hot and have extensive dry seasons along with fire?
[ "savannas", "tundra", "deserts", "arctic" ]
A
Savannas Savannas are grasslands with scattered trees, and they are found in Africa, South America, and northern Australia (Figure 20.18). Savannas are hot, tropical areas with temperatures averaging from 24oC –29oC (75oF –84oF) and an annual rainfall of 51–127 cm (20–50 in). Savannas have an extensive dry season and c...
math_qa
mathqa_03_01162
what percent is 2 minutes 24 seconds of an hour ?
[ "6 %", "8 %", "4 %", "2 %" ]
C
"2 mt 24 s = 144 s ( 144 * 100 ) / ( 60 * 60 ) = 4 % answer : c"
ARC-Easy
arc_04_00852
In the past, wild hogs called "javelinas" were seen only in the southern part of New Mexico. Now, javelinas are seen in areas 100 miles further north. What is the most likely cause of this expansion?
[ "Javelinas are reproducing less frequently.", "Environmental conditions have changed.", "The javelina's genetic traits have mutated.", "Nutritional requirements of javelinas have changed." ]
B
null
math_qa
mathqa_03_00322
two cars are traveling in the same direction along the same route . the red car travels at a constant speed of 40 miles per hour , and the black car is traveling at a constant speed of 50 miles per hour . if the red car is 10 miles ahead of the black car , how many hours will it take the black car to overtake the red c...
[ "0.1", "0.6", "1", "1.2" ]
C
"option c 10 + 40 t = 50 t t = 1"
sciq
sciq_01_11066
About 20 percent of carbon dioxide is bound by hemoglobin and is transported where?
[ "intestines", "brain tissues", "bones", "lungs" ]
D
Carbaminohemoglobin About 20 percent of carbon dioxide is bound by hemoglobin and is transported to the lungs. Carbon dioxide does not bind to iron as oxygen does; instead, carbon dioxide binds amino acid moieties on the globin portions of hemoglobin to form carbaminohemoglobin, which forms when hemoglobin and carbon d...
openbookqa
obqa_02_01290
A source of heat could be
[ "an ice cube", "a fan", "holding hands", "a snowflake" ]
C
a radiator is a source of heat
sciq
sciq_01_08173
The distinctive appearance of what tissue is due to polysaccharides called chondroitin sulfates?
[ "collagen", "membrane", "cartilage", "bone" ]
C
Cartilage The distinctive appearance of cartilage is due to polysaccharides called chondroitin sulfates, which bind with ground substance proteins to form proteoglycans. Embedded within the cartilage matrix are chondrocytes, or cartilage cells, and the space they occupy are called lacunae (singular = lacuna). A layer o...
ARC-Challenge
arc_04_02512
A college student looks through a microscope at blood cells and states that red blood cells are more important than white blood cells. This statement is a
[ "statement of fact.", "scientific conclusion.", "scientific hypothesis.", "statement of opinion." ]
D
null
sciq
sciq_01_07103
Wavelengths are described by a unit of what?
[ "direction", "speed", "distance", "weight" ]
C
Wavelengths are described by a unit of distance, typically meters.
medmcqa
medmcqa_05_02142
Left sided sixth nerve palsy would lead to -
[ "Accommodation paresis of left eye", "Ptosis of left eye", "Adduction weakness of left eye", "Diplopia in left gaze" ]
D
Left sided 6th nerve palsy lead to diplopia in left sided gaze. The abducens nerve is a nerve that controls the movement of the lateral rectus muscle in humans, responsible for outward gaze. It is also known as the abducent nerve, the sixth cranial nerve, sixth nerve Ref khurana 6/e
sciq
sciq_01_02237
The animal kingdom can also be divided into two basic groups, what are they?
[ "invertebrates and vertebrates", "mammals and fish", "sponges and vertebrates", "aquatic and land" ]
A
The Animal Kingdom is one of four kingdoms in the Eukarya Domain. The Animal Kingdom, in turn, is divided into almost 40 modern phyla. The Animal Kingdom can also be divided into two basic groups: invertebrates and vertebrates. Most animal species are invertebrates, which lack a backbone.
sciq
sciq_01_08783
What kind of joints allow for a wide range of flexibility?
[ "pivot", "ball and socket", "lever", "anchor" ]
B
Socket diagram: Pearson Scott Foresman; Joint diagram: Zachary Wilson. Ball and socket joints allow for a wide range of flexibility . Socket diagram: Public Domain; Joint diagram: CC BY-NC 3.0.
sciq
sciq_01_04420
Darwin coined what term to refer to an organism’s relative ability to survive and produce fertile offspring?
[ "strength", "momentum", "fitness", "metabolism" ]
C
Darwin coined the term fitness to refer to an organism’s relative ability to survive and produce fertile offspring. Nature selects the variations that are most useful. Therefore, he called this type of selection natural selection.
sciq
sciq_01_06602
What type of cellular respiration occurs in the presence of oxygen?
[ "hyperbaric", "aerobic", "anaerobic", "extracellular" ]
B
There are two types of cellular respiration (see Cellular Respiration concept): aerobic and anaerobic. One occurs in the presence of oxygen ( aerobic ), and one occurs in the absence of oxygen ( anaerobic ). Both begin with glycolysis - the splitting of glucose.
sciq
sciq_01_10308
Some gametophytes develop underground and form mycorrhizal associations with what?
[ "plants", "protists", "fungi", "animals" ]
C
Lycophytes follow the pattern of alternation of generations seen in the bryophytes, except that the sporophyte is the major stage of the lifecycle. The gametophytes do not depend on the sporophyte for nutrients. Some gametophytes develop underground and form mycorrhizal associations with fungi. In club mosses, the spor...
sciq
sciq_01_03541
What chemical substances are secreted by animals that communicate by odor or taste?
[ "hormones", "acids", "pheromones", "alaki" ]
C
medmcqa
medmcqa_05_02735
Which of the following is the most radiosensitive ovarian tumors:
[ "Dysgerminoma", "Dermoid cyst", "Serous cystadenoma", "Endodermal sinus tumour" ]
A
“Below the age of 20 years 60% of the tumours are of germ cell origin and in girls under the age of 10 years almost 85% are of germ cell origin and are invariably malignant.” “Dysgerminoma is the most common malignant germ cell tumour accounting for about 40% of all ovarian cancers of germ cell origin.” “Dysgerminomas ...
sciq
sciq_01_10256
With the exception of water, what accounts for more mass than any other component of living organisms?
[ "fats", "proteins", "hormones", "nervous tissue" ]
B
9.4 | Translation By the end of this section, you will be able to: • Describe the different steps in protein synthesis • Discuss the role of ribosomes in protein synthesis • Describe the genetic code and how the nucleotide sequence determines the amino acid and the protein sequence The synthesis of proteins is one of a...
openbookqa
obqa_02_03091
If a person is avoiding sugar, they will stop eating
[ "meat", "eggs", "butter", "bread" ]
D
carbohydrates are made of sugars
math_qa
mathqa_03_03278
an employee ’ s annual salary was increased 50 % . if her old annual salary equals $ 80,000 , what was the new salary ?
[ "$ 128,000", "$ 120,000", "$ 110,000", "$ 139,000" ]
B
"old annual salary = $ 80,000 salary increase = 50 % . original salary = $ 80,000 * 50 / 100 = $ 40,000 new salary = $ 80,000 + $ 40,000 = $ 120,000 hence b ."
sciq
sciq_01_10921
Mixtures that have the same composition throughout are known as what kinds of mixtures?
[ "contiguous", "homogeneous", "zygomatic", "heterogeneous" ]
B
Some mixtures are homogeneous. This means they have the same composition throughout. An example is salt water in the ocean. Ocean water everywhere is about 3.5 percent salt.
medmcqa
medmcqa_05_01717
Most potent loop diuretic is:
[ "Furosemide", "Bumetanide", "Torsemide", "Ethacrynic acid" ]
B
Bumetanide is most potent loop diuretic Torsemide is longest acting loop diuretic.
math_qa
mathqa_03_04870
when greenville state university decided to move its fine arts collection to a new library , it had to package the collection in 20 - inch by 20 - inch by 12 - inch boxes . if the university pays $ 0.40 for every box , and if the university needs 2.4 million cubic inches to package the collection , what is the minimum ...
[ "$ 200", "$ 275", "$ 510", "$ 1,250" ]
A
"the volume of each box is 20 * 20 * 12 = 4800 cubic inches . number of boxes = 2 , 400,000 / 4800 = 500 boxes total cost = 500 × $ 0.4 = $ 200 the answer is a ."
ARC-Easy
arc_04_01039
What causes a person to have blue eyes?
[ "eating foods high in protein at a young age", "having a brother or sister with blue eyes", "being overexposed to the Sun at a young age", "receiving a gene for blue eyes from each parent" ]
D
null
medmcqa
medmcqa_05_02644
The drug of choice for chemoprophylaxis in contacts of a patient of penumonic plague is -
[ "Penicillin", "Rifampicin", "Erythromycin", "Tetracycline" ]
D
Ans. is 'd' i.e., Tetracycline Chemoprophylaxis o Chemoprophylaxis refers to the administration of a drug for the purpose of preventing disease or infection. Indications for chemoprophylaxis Disease Chemoprophylaxis Cholera Tetracycline or furazolidone for house-hold contacts Conjuncitivitis Erythromycin ophthalmic oin...
openbookqa
obqa_02_04800
Which can view an ocean?
[ "bogs", "logs", "pogs", "dogs" ]
D
eyes are used for seeing by animals by sensing light
ARC-Easy
arc_04_02051
Which statement best describes the organization of the Periodic Table of the Elements?
[ "All gases are grouped together.", "Gases easily form compounds with other elements.", "Elements within a group have similar properties.", "Elements within a period have the same number of electrons." ]
C
null
sciq
sciq_01_03752
What is the act of noting or detecting phenomenon through the senses
[ "sensory overload", "overstimulation", "invention", "an observation" ]
D
Scientists first make observations that raise questions. An observation is the act of noting or detecting phenomenon through the senses. For example, noting that a room is dark is an observation made through sight.
sciq
sciq_01_02150
What are used to balance chemical equations?
[ "coefficients", "densities", "outputs", "isotopes" ]
A
Coefficients are used to balance chemical equations. A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction.
medmcqa
medmcqa_05_01921
Foamy liver is seen in?
[ "Chronic venous congestion", "2-3 days after death due to putrefaction", "Aseptic autolysis of dead born fetus", "Seen immediately after death in cyanide poisoning." ]
B
Foamy liver also called Honey comb liver occurs due to putrefactive changes and production of gas due to activity of bacteria.
medmcqa
medmcqa_05_04005
Which of the following is preferred treatment after birth for baby of HBsAg positive mother?
[ "HepB immunoglobulin only", "HepB immunoglobulin + HepB immunization", "Only HepB immunization", "No active treatment required" ]
B
Ans. is 'b' i.e., Hep B immunoglobulin + Hep B immunization o Hepatitis B virus (HBV): It is a global public health problem. The virus is transmitted by parenteral route, sexual contact, vertical transmission and rarely through breast milk. The risk of transmission to fetus ranges from 10% in first trimester to as high...
math_qa
mathqa_03_00244
a rectangular farm has to be fenced one long side , one short side and the diagonal . if the cost of fencing is rs . 15 per meter . the area of farm is 1200 m 2 and the short side is 30 m long . how much would the job cost ?
[ "1276'", "1200'", "2832'", "1800'" ]
D
explanation : l * 30 = 1200 è l = 40 40 + 30 + 50 = 120 120 * 15 = 1800 answer : option d
medmcqa
medmcqa_05_02606
CRAFFT Questionnaire is used for
[ "Screening for physical dexterity", "Screening for thyroid disorders", "Screening Adolescents for drug abuse", "Screening parents for abusive tendencies" ]
C
.
sciq
sciq_01_07038
Name what nutrient cycling is strongly regulated by.
[ "abundance", "sunlight", "vegetation", "elevation" ]
C
math_qa
mathqa_03_00689
the smallest number which when diminished by 6 , is divisible by 12 , 16 , 18 , 21 and 28 is
[ "1008", "1014", "1022", "1032" ]
B
"required number = ( l . c . m of 12 , 16 , 18 , 21,28 ) + 6 = 1008 + 6 = 1014 answer : b"
sciq
sciq_01_10374
What is the most important source of electromagnetic waves on earth?
[ "cell phones", "wireless networks", "radios", "the sun" ]
D
The most important source of electromagnetic waves on Earth is the sun. Electromagnetic waves travel from the sun to Earth across space and provide virtually all the energy that supports life on our planet. Many other sources of electromagnetic waves depend on technology. Radio waves, microwaves, and X rays are example...
medmcqa
medmcqa_05_01176
Jefferson is:
[ "of atlas", "axis", "of spinous process of C 7", "of any cervical vertebra" ]
A
Ans. is 'a' ie of Atlas Some common named fractures :Jefferson *-Burst of atlas *Hangman's *- of axis *Clayshovellers *-Spines process of C7 * Smiths *-Reverse of colie's * ( at the cortico cancellus junction of radius with volar tilt of the distal fragment)* Barton 's *-distal radius ( extends from the distal articula...
sciq
sciq_01_08059
What has hot days and cool nights, and are typically covered with sand dunes or sparse but hardy plants?
[ "tundra", "deserts", "rain forest", "arctic" ]
B
The driest climates are deserts . Most occur between about 15° and 30° latitude. This is where dry air sinks to the surface in the global circulation cells. Deserts receive less than 25 centimeters (10 inches) of rain per year. They may be covered with sand dunes or be home to sparse but hardy plants (see Figure below ...
ARC-Easy
arc_04_00045
Which of the following is most likely to lead to error in an experiment?
[ "bias", "repeated trials", "peer review", "use of a control" ]
A
null
openbookqa
obqa_02_00837
Arctic foxes are white in order to
[ "hide from their predators", "hide in their environment", "keep their bodies warm", "keep their fur clean" ]
B
the arctic environment is white in color from being covered in snow
ARC-Easy
arc_04_01671
An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile?
[ "a wire", "a battery", "a resistor", "a light bulb" ]
B
null
sciq
sciq_01_01303
What globular protein is used in the construction of the hollow tube?
[ "tubulin", "cyclin", "actin", "keratin" ]
A
medmcqa
medmcqa_05_00461
Stapedial reflex is absent in:
[ "VIth nerve lesion", "Xth nerve lesion", "VIIIth nerve lesion", "Vth nerve lesion" ]
C
(c) VIII nerve lesion(Ref. Anirban Biswas, 5th ed. 118; Cummings, 6th ed., 2055)In VIII nerve lesion Stapedial reflex is absent in both ipsilateral and contralateral ears as it is the afferent of the reflex.
sciq
sciq_01_09271
What are the two main types of diabetes?
[ "type 1, type 2", "type a, b", "type 0, 1", "type 3, 4" ]
A
There are two main types of diabetes: type 1 diabetes and type 2 diabetes. The two types of diabetes have different causes.
sciq
sciq_01_00150
What are alloys that are mostly composed of mercury known as?
[ "compounds", "fillings", "amalgams", "halogens" ]
C
Alloys that are mostly composed of mercury are known as amalgams . Amalgams often have special properties that stem from the fact that mercury exists as a liquid at room temperature. As a result, metal amalgams are used for a variety of purposes, including dentistry and the extraction of other pure metals such as gold.
medmcqa
medmcqa_05_01984
Most common complication of mastectomy is:
[ "Seroma", "Hemorrhage", "Lympnedema", "Infection" ]
A
Seromas beneath the skin flaps or in the axilla represent the most frequent complication of mastectomy and axillary lymph node dissection, repoedly occurring in as many as 30% of cases. Ref: Schwaz's principle of surgery 9th edition, chapter 17.
medmcqa
medmcqa_05_00872
A patient with pneumonia for 5 days is admitted to the hospital in altered sensorium. He suddenly ceases to recognize the doctor and staff. He thinks that he is in jail and complains of scorpion attacking him. His probable diagnosis is:
[ "Acute dementia", "Acute delirium", "Acute schizophrenia", "Acute paranoia" ]
B
History of Medical disorder (pneumonia) Followed by disturbances in consciousness (altered sensorium), disorientation (failure to recognize doctor and staff and thinking that he is in jail) and Hallucinations (scorpions attacking) is suggestive of delirium.
math_qa
mathqa_03_01009
each child has 6 crayons and 12 apples . if there are 12 children , how many crayons are there in total ?
[ "22", "65", "72", "78" ]
C
6 * 12 = 72 . answer is c
math_qa
mathqa_03_03224
if an article is sold at 18 % profit instead of 9 % profit , then the profit would be $ 72 more . what is the cost price ?
[ "$ 500", "$ 600", "$ 700", "$ 800" ]
D
"9 % * cost price = $ 72 1 % * cost price = $ 72 / 9 = $ 8 the cost price is $ 800 . the answer is d ."
openbookqa
obqa_02_03800
Flashlights require batteries
[ "to properly illuminate objects", "to illuminate alien creatures", "to be used as a weapon", "to meet height values" ]
A
a flashlight emits light
sciq
sciq_01_00207
What pair of tubes that extends toward the ovaries features a fringelike structure that sweeps eggs inside?
[ "vas deferens", "ovarian tubes", "fallopian tubes", "golgi apparatus" ]
C
Extending from the upper corners of the uterus are the two fallopian tubes. Each tube reaches (but is not attached to) one of the ovaries. The ovary end of the tube has a fringelike structure that moves in waves. The motion sweeps eggs from the ovary into the tube.
math_qa
mathqa_03_00986
three 6 faced dice are thrown together . the probability that all the three show the same number on them is - .
[ "1 / 36", "1 / 216", "1 / 48", "1 / 55" ]
A
"it all 3 numbers have to be same basically we want triplets . 111 , 222 , 333 , 444 , 555 and 666 . those are six in number . further the three dice can fall in 6 * 6 * 6 = 216 ways . hence the probability is 6 / 216 = 1 / 36 answer a"
openbookqa
obqa_02_04666
Controlled burns help prevent wildfires by cleaning up
[ "dead foliage", "animal droppings", "wasp nests", "air pollution" ]
A
fire destroys plants in an environment
sciq
sciq_01_01682
What can be thought of as the capacity a device has for storing charge?
[ "capacitance", "velocity", "resonance", "potential" ]
A
The amount of charge, , held by each plate is given by where again is the voltage difference between the plates and is the capacitance of the plate configuration. Capacitance can be thought of as the capacity a device has for storing charge . In the parallel plate case the capacitance is given by where is the area of t...
math_qa
mathqa_03_03825
when positive integer n is divided by 2 , the remainder is 1 . when n is divided by 7 , the remainder is 5 . what is the smallest positive integer p , such that ( n + p ) is a multiple of 10 ?
[ "1", "2", "5", "19" ]
C
"when positive integer n is divided by 2 , the remainder is 1 i . e . , n = 2 x + 1 values of n can be one of { 1 , 3 , 5 , 7 , 9 , 11 , 13 , 15 , 17,19 , . . . . . . . . . . . . . . 31 , 33,35 . . . . . . . . . . . . . . . . . . } similarly , when n is divided by 7 , the remainder is 5 . . i . e . , n = 7 y + 5 values...
sciq
sciq_01_00713
Eukaryotic cells are cells that contain what?
[ "energy", "inorganic matter", "pathogens", "a nucleus" ]
D
Eukaryotic cells are cells that contain a nucleus.
openbookqa
obqa_02_04229
In an auction, how might a seller avoid too much of a loss?
[ "buyer beware", "Auction Block", "Sealed Bid", "setting a reserve" ]
D
as the sale of a product decreases , the amount of money made by the person selling that product will decrease
math_qa
mathqa_03_03241
if a ( a - 4 ) = 21 and b ( b - 4 ) = 21 , where a ≠ b , then a + b =
[ "− 48", "− 2", "4", "46" ]
C
"a ( a - 4 ) = 21 and b ( b - 4 ) = 21 = > a , b must be integers and if a is - 3 or 7 , b will be 7 and - 3 respectively = > a + b = 4 ans : c"
sciq
sciq_01_06518
Why does metal conduct heat and electricity so well?
[ "insulation", "electromagnetism", "free flowing electrons", "free flowing photons" ]
C
The metallic bonding model explains the physical properties of metals. Metals conduct electricity and heat very well because of their free-flowing electrons. As electrons enter one end of a piece of metal, an equal number of electrons flow outward from the other end. When light is shone on to the surface of a metal, it...