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7.76k
sciq
sciq_01_00607
The boiling point of a solution is higher than the boiling point of the pure solvent, but the opposite occurs with this?
[ "liquidity point", "dissolving point", "evaporation point", "freezing point" ]
D
The boiling point of a solution is higher than the boiling point of the pure solvent, but the opposite occurs with the freezing point. The freezing point of a solution is lower than the freezing point of the pure solvent. Think of this by assuming that solute particles interfere with solvent particles coming together t...
sciq
sciq_01_10129
The steropodon may have been an ancestor of which animal?
[ "lioness", "wooly mammoth", "platypus", "geckos" ]
C
The first monotremes may have evolved about 150 million years ago. Early monotreme fossils have been found in Australia. An example is a genus called Steropodon , shown in Figure below . It may have been the ancestor of the platypus. Early monotremes retained some of the traits of their therapsid ancestors. For example...
math_qa
mathqa_03_04385
if p / q = 3 / 4 then 3 p + 4 q = ?
[ "25 / 4", "25 / 2", "20 / 4", "35 / 4" ]
A
3 p + 4 q = ? divided by q , 3 ( p / q ) + 4 = x 3 * ( 3 / 4 ) + 4 = 25 / 4 answer : a
sciq
sciq_01_11217
What is the term for the buildup of electric charge on an object, which can be transferred to another when touched?
[ "electromagnetic electricity", "static electricity", "electric potential", "static cling" ]
B
Static electricity is a buildup of electric charges on objects. It occurs when electrons are transferred from one object to another.
ARC-Easy
arc_04_00066
Which of the following sentences best explains what happens when puddles evaporate?
[ "The water absorbs into the ground.", "The particles of matter move more slowly.", "The water changes from one form to another.", "The particles of matter move closer together." ]
C
null
sciq
sciq_01_11467
What is calculated by subtracting the smallest value from the largest value?
[ "the median", "the density", "the sample", "the range" ]
D
The range is the total spread of values. It gives you an idea of the variation in the measurements. The range is calculated by subtracting the smallest value from the largest value. For the data in Table above , the range in numbers of vehicles by type is: 150 - 50 = 100.
sciq
sciq_01_02389
What is crucial for the fermentation progress in making bread?
[ "cold", "larvae", "fruit", "yeast" ]
D
Yeasts are crucial for the fermentation process that makes beer, wine, and bread. Fermentation occurs in the absence of oxygen and allows the first step of cellular respiration, glycolysis, to continue.
math_qa
mathqa_03_04518
three table runners have a combined area of 208 square inches . by overlapping the runners to cover 80 % of a table of area 175 square inches , the area that is covered by exactly two layers of runner is 24 square inches . what is the area of the table that is covered with three layers of runner ?
[ "22 square inches'", "20 square inches'", "24 square inches'", "28 square inches'" ]
A
total = a + b + c - ( sum of exactly 2 - group overlaps ) - 2 * ( all three ) + neither 80 % * 175 = 208 - 24 - 2 * ( all three ) + 0 2 * ( all three ) = 208 - 24 - 140 all three = 22 answer : a
sciq
sciq_01_05460
What part of the cell in plants and algae does photosynthesis take place?
[ "mitochondria", "fibers", "cell wall", "organelles" ]
D
organelle in the cells of plants and algae where photosynthesis takes place.
sciq
sciq_01_05907
Which part of the plant is responsible for seed production?
[ "root", "leaf", "flower", "pistil" ]
C
sciq
sciq_01_11273
The contents of which organ are mixed every 20 seconds?
[ "the stomach", "pancreas", "the metabolism", "kidney" ]
A
sciq
sciq_01_04492
What does fluorine attract better than any other element?
[ "electron shells", "shared electrons", "ionic bonds", "magnets" ]
B
Valence electrons of both atoms are always involved when those two atoms come together to form a chemical bond. Chemical bonds are the basis for how elements combine with one another to form compounds. When these chemical bonds form, atoms of some elements have a greater ability to attract the valence electrons involve...
sciq
sciq_01_05705
What advantage equals the distance of effort divided by the distance the object moves and is also equal to the output force divided by the input force?
[ "mechanical", "atomic", "constant", "potential" ]
A
Mechanical advantage equals the distance of effort divided by the distance the object moves. It is also equal to the output force divided by the input force.
sciq
sciq_01_06789
What force holds planets in their orbits?
[ "gravity", "magnetism", "Big Bang", "centrifuge" ]
A
Planets are held in their orbits by the force of gravity. What would happen without gravity? Imagine that you are swinging a ball on a string in a circular motion. Now let go of the string. The ball will fly away from you in a straight line. It was the string pulling on the ball that kept the ball moving in a circle. T...
math_qa
mathqa_03_03580
if there are only 2 wheelers and 4 wheelers parked in a school located at the heart of the city , find the number of 4 wheelers parked there if the total number of wheels is 58 ?
[ "11", "12", "13", "14" ]
D
"four wheeler = 14 * 4 = 56 ( max ) 2 wheel = 1 so no of 4 wheeler = 14 answer : d"
sciq
sciq_01_08129
Scientists use a quantity called __________ as a measure of disorder, or randomness.
[ "chance level", "motion", "vector count", "entropy" ]
D
openbookqa
obqa_02_00718
Muscles pull on bones in order to move them; which is an example of that?
[ "shaking your head in frustration", "rolling your eyes at someone", "wiggling your tongue in your mouth", "wrinkling your nose at a smell" ]
A
muscles pull bones to move the bones
sciq
sciq_01_06695
What type of matter often sinks into cracks between rocks?
[ "vapor", "liquid", "algae", "energy" ]
B
math_qa
mathqa_03_03512
the average height of 30 students in a class was calculated as 175 cm . it has later found that the height of one of the students in the class was incorrectly written as 151 cm whereas the actual height was 136 cm . what was the actual average height of the students in the class ?
[ "174.5", "173.5", "172.5", "171.5" ]
A
"the total height was 15 cm too much . the average height should be reduced by 15 cm / 30 = 0.5 cm the answer is a ."
math_qa
mathqa_03_03873
a worker ' s daily wage is increased by 50 % and the new wage is $ 51 per day . what was the worker ' s daily wage before the increase ?
[ "$ 28", "$ 32", "$ 34", "$ 35" ]
C
"let x be the daily wage before the increase . 1.5 x = $ 51 x = $ 34 the answer is c ."
sciq
sciq_01_08033
The most common substance on earth, water, is primarily present in what state?
[ "gas", "solid", "freshwater", "liquid" ]
D
Water is the most common substance on Earth, and most of it exists in the liquid state. A liquid is one of four well-known states of matter, along with solid, gas, and plasma states. The particles of liquids are in close contact with each other but not as tightly packed as the particles in solids. The particles can sli...
ARC-Challenge
arc_04_02968
Compared to similar-sized gasoline-powered vehicles, electric-gasoline-hybrid vehicles are primarily designed to
[ "produce more horsepower.", "eliminate greenhouse gas emissions.", "operate independently of fossil fuels.", "provide better gas mileage." ]
D
null
sciq
sciq_01_04046
What is the shorter loop of the cardiovascular system?
[ "metabolic circulation", "pulmonary edema", "venous circulation", "pulmonary circulation" ]
D
Pulmonary circulation is the shorter loop of the cardiovascular system. It carries blood between the heart and lungs. Oxygen-poor blood flows from the heart to the lungs. In the lungs, the blood absorbs oxygen and releases carbon dioxide. Then the oxygen-rich blood returns to the heart.
sciq
sciq_01_06346
Which state of matter has the lowest density?
[ "liquids", "gases", "fluids", "solids" ]
B
Gases have much lower densities than liquids and solids. For example, liquid water is over 1000 times more dense than water vapor at STP.
sciq
sciq_01_05090
In iceland, the mid-atlantic ridge is above sea what?
[ "bottom", "atmosphere", "level", "tide" ]
C
In Iceland, the Mid-Atlantic Ridge is above sea level. It's the only place we can see a mid-ocean ridge out of the water. The Midlina Bridge connects two plates. On the west side is the North American plate. On the east side is the Eurasian plate. A mid-ocean ridge is where new crust is created. Eventually this spot wi...
sciq
sciq_01_02524
Organisms incapable of photosynthesis that must therefore obtain energy and carbon from food by consuming other organisms are called what?
[ "heterotrophs", "autotrophs", "photoautotrophs", "chemoautotrophs" ]
A
Heterotrophs are organisms incapable of photosynthesis that must therefore obtain energy and carbon from food by consuming other organisms. The Greek roots of the word heterotroph mean “other” (hetero) “feeder” (troph), meaning that their food comes from other organisms. Even if the food organism is another animal, thi...
openbookqa
obqa_02_02556
Weathering can do what?
[ "change a sculpture to dust", "build a steel city", "travel to space on air", "create a time traveling vortex." ]
A
An example of weathering is when a plant root grows into a crack in rock
sciq
sciq_01_06579
What biome is located between the temperate and tropical biomes?
[ "mountainous", "Desert", "Tropical", "subtropical" ]
D
Latitude means how far a biome is from the equator. Moving from the poles to the equator, you will find (in order) Arctic, boreal, temperate, subtropical, and tropical biomes.
openbookqa
obqa_02_01669
Joe used a flame torch against the side of a bucket and the entire barrel heated up, but didn't burn. What material could the bucket have been made of?
[ "walnut", "aluminum", "ice", "ceramic" ]
B
metal is a thermal conductor
sciq
sciq_01_04153
What are four children born at one birth called?
[ "triplets", "quadruplets", "twins", "kittens" ]
B
QUADruplets are four children born at one birth.
sciq
sciq_01_10606
Human mammary glands can produce what substance, which can be used to feed children?
[ "milk", "urea", "edema", "sperm" ]
A
The mother’s mammary glands go through changes during the third trimester to prepare for lactation and breastfeeding. When the baby begins suckling at the breast, signals are sent to the hypothalamus causing the release of prolactin from the anterior pituitary. Prolactin causes the mammary glands to produce milk. Oxyto...
sciq
sciq_01_10524
Ground subsidence is a consequences of the overuse of what?
[ "groundwater", "chemicals", "plants", "topsoil" ]
A
Ground subsidence is a consequences of groundwater overuse.
sciq
sciq_01_07654
Which part of a fish helps them breathe?
[ "fins", "pores", "gills", "layers" ]
C
ARC-Easy
arc_04_01340
An example of a poor health habit is
[ "taking a bath or shower regularly", "handwashing after using the bathroom", "playing on a soccer team", "eating candy instead of lunch" ]
D
null
sciq
sciq_01_03897
What are clouds that form on the ground called?
[ "smoke", "fog", "canopy", "haze" ]
B
Clouds form when air in the atmosphere reaches the dew point. Clouds may form anywhere in the troposphere. Clouds that form on the ground are called fog .
sciq
sciq_01_06091
What are located on either side of the pharynx in the throat?
[ "lymph nodes", "tonsils", "testicles", "wrinkles" ]
B
The tonsils are located on either side of the pharynx in the throat. They trap pathogens, which are destroyed by lymphocytes in the tonsils.
sciq
sciq_01_01073
The energy changes in what reactions are enormous compared with those of even the most energetic chemical reactions, and they result in a measurable change of mass?
[ "metabolic reaction", "molecular reaction", "nuclear reactions", "methane combustion" ]
C
To understand the differences between nuclear fission and fusion. Nuclear reactions, like chemical reactions, are accompanied by changes in energy. The energy changes in nuclear reactions, however, are enormous compared with those of even the most energetic chemical reactions. In fact, the energy changes in a typical n...
ARC-Easy
arc_04_00148
In gym class a student kicks a soccer ball high into the air. As the ball goes upward, which type of energy is increasing?
[ "kinetic energy", "thermal energy", "potential energy", "mechanical energy" ]
C
null
ARC-Easy
arc_04_00875
In making a pizza, which process involves a chemical change?
[ "mixing spices for the sauce", "slicing pepperoni for the topping", "spreading cheese on the pizza", "baking the dough to form the crust" ]
D
null
medmcqa
medmcqa_05_04800
MHC class - III genes encode
[ "Complement component C3", "Tumor necrosis factor", "Interleukin-2", "Beta-2 microglobulin" ]
B
Structure - Major histocompatibility complex, (HLA) complex MHC class III genes encode Complement components C2 and C4 Properdin factor B of alternate pathway TNF - alpha and beta Heat shock proteins Also known as "complement region"
ARC-Challenge
arc_04_03170
What would be the best evidence that two substances are made of different types of matter?
[ "Two substances have different reactions to light.", "Two substances have different temperatures.", "Two substances have different volumes.", "Two substances have different shapes." ]
A
null
medmcqa
medmcqa_05_00901
Shrugging muscle among the following?
[ "Trapezius", "Rhomboid minor", "Serratus anterior", "Latissimus dorsi" ]
A
MuscleNerve supplyActionsTrapeziusSpinal pa of the accessory nerve is motor.Branches from C3, C4 are proprioceptiveUpper fibers act with levator scapulae and elevatethe scapula, as in shruggingMiddle fibers act with rhomboids and retract thescapulaUpper and lower fibers act with serratus anterior and rotate the scapula...
sciq
sciq_01_08741
Polymers, ceramics, adhesives, coatings, and liquid crystals are examples of materials recently discovered or developed by what type of scientists?
[ "engineers", "chemists", "material scientists", "geologists" ]
B
Chemists are involved in the design and production of new materials. Some of the materials that chemists have helped discover or develop in recent years include polymers, ceramics, adhesives, coatings, and liquid crystals. Liquid crystals are used in electronic displays, as in watches and calculators. The silicon-based...
openbookqa
obqa_02_03467
Greenhouses are great for plants like
[ "Pizza", "Lollipops", "Candles", "French beans" ]
D
a greenhouse is used to protect plants from the cold
sciq
sciq_01_08085
What does a theory need to be supported by?
[ "facts", "many observations", "scientists", "peer reviewed journals" ]
B
In science, a theory has been repeatedly shown to be true. A theory is supported by many observations. However, a theory may be disproved if conflicting data is discovered. Many important theories have been shown to be true by many observations and experiments and are extremely unlikely to be disproved. These include t...
medmcqa
medmcqa_05_04263
In which organelle (s) of hepatocyte, the elongation of long chain fatty acid takes place?
[ "Endoplasmic reticulum (ER)", "Golgi body", "Mitochondria", "Lysosomes" ]
A
There is two kinds of endoplasmic reticulum (ER): (i) Rough surfaced ER, also known as ergastoplasm. They are coated with ribosomes. Near the nucleus, this type of ER merges with the outer membrane of the nuclear envelope. (ii) Smooth surfaced ER: They do not have attached ribosomes. Function of smooth ER: Smooth endop...
sciq
sciq_01_00347
The number of what subatomic particles can vary between atoms of the same element?
[ "neurons", "protons", "neutrons", "electrons" ]
C
As stated earlier, not all atoms of a given element are identical. Specifically, the number of neutrons in the nucleus can vary for many elements. As an example, naturally occurring carbon exists in three forms, which are illustrated in Figure below .
math_qa
mathqa_03_04821
if a = 105 and a ^ 3 = 21 * 35 * 45 * b , what is the value of b ?
[ "35", "42", "45", "49" ]
A
"first step will be to break down all the numbers into their prime factors . 105 = 3 * 5 * 7 21 = 7 * 3 35 = 7 * 5 45 = 3 * 3 * 5 so , ( 105 ) ^ 3 = 3 * 7 * 7 * 5 * 3 * 3 * 5 * b therefore ( 3 * 5 * 7 ) ^ 3 = 3 ^ 3 * 5 ^ 2 * 7 ^ 2 * b therefore , b = 3 ^ 3 * 5 ^ 3 * 7 ^ 3 / 3 ^ 3 * 5 ^ 2 * 7 ^ 2 b = 5 * 7 = 35 correct ...
sciq
sciq_01_03033
Fossil fuels are made out of what two objects?
[ "gases and animals", "soil and animals", "plants and water", "plants and animals" ]
D
Fossil fuels are made from plants and animals that lived hundreds of millions of years ago. The plants and animals died. Their remains settled onto the ground and at the bottom of the sea. Layer upon layer of organic material was laid down. Eventually, the layers were buried very deeply. They experienced intense heat a...
sciq
sciq_01_05883
Squamata is the largest order of what broad animal group, and includes lizards and snakes?
[ "spiny fishes", "amphibians", "reptiles", "mammals" ]
C
Lizards and snakes belong to the largest order of reptiles, Squamata. Lizards are a large group of reptiles, with nearly 5,000 species, living on every continent except Antarctica. Some places are just too cold for lizards.
openbookqa
obqa_02_04493
Corn and wheat are among the favorite foods of
[ "humans", "grizzly bears", "fish", "aliens" ]
A
humans eat crops
sciq
sciq_01_01749
What are organelles made of protein and ribosomal rna (rrna)?
[ "carbons", "electrons", "ribosomes", "chromosomes" ]
C
The nucleus of many cells also contains a non-membrane bound organelle called a nucleolus , shown in Figure below . The nucleolus is mainly involved in the assembly of ribosomes. Ribosomes are organelles made of protein and ribosomal RNA (rRNA), and they build cellular proteins in the cytoplasm. The function of the rRN...
sciq
sciq_01_08780
What is used for the fermentation process that makes beer, wine, and bread?
[ "yeast", "barley", "whey", "fungi" ]
A
Yeast are used for the fermentation process that makes beer, wine, and bread.
medmcqa
medmcqa_05_01983
Superior mesenteric aery supplies:
[ "Colon", "Anus", "Rectum", "Descending colon" ]
A
Colon
sciq
sciq_01_09809
What are elements that generally do not conduct electricity?
[ "copper", "iron", "nonmetals", "metal" ]
C
Nonmetals are elements that generally do not conduct electricity. They are one of three classes of elements (the other two classes are metals and metalloids. ) Nonmetals are the second largest of the three classes after metals. They are the elements located on the right side of the periodic table.
math_qa
mathqa_03_04499
a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , d are sitting together ?
[ "1 / 5", "3 / 28", "1 / 7", "1 / 14" ]
B
"total number of arrangement is = 8 ! = 40320 favorable event i . e a , b and d can be arranged in 3 ! and the remaining can be arranged in 6 ! since abd can be in any of the six positions . so 3 ! * 6 ! / 8 ! = 3 / 28 answer : b"
math_qa
mathqa_03_01351
a sum was put at si at certain rate for 2 years . had it been put at 3 % higher rate , it would have fetched rs . 300 more . find the sum
[ "rs 4000", "rs 5000", "rs 6000", "rs 7000" ]
B
let p be the sum . and x be the interest rate . ( 2 * ( x + 3 ) * p / 100 ) - ( 2 * x * p / 100 ) = 300 therefore 6 p / 100 = 300 p = rs 5000 answer : b
sciq
sciq_01_09990
Cold fronts in winter may bring what type of storm?
[ "monsoon", "showers", "snow storm", "typhoon" ]
C
As the fast-moving cold air mass keeps advancing, so does the cold front. Cold fronts often bring sudden changes in the weather. There may be a thin line of storms right at the front that moves as it moves. In the spring and summer, these storms may be thunderstorms and tornadoes. In the late fall and winter, snow stor...
medmcqa
medmcqa_05_01374
One of the following diuretics does not require its presence in the tubular lumen for its pharmacological effects:
[ "Thiazide diuretics", "Loop diuretics", "Carbonic anhydrase inhibitors", "Aldosterone antagonists" ]
D
Ans. (D) Aldosterone antagonists(Ref: KDT 8/e p634)*Most of the diuretics act from the luminal side of membrane in the nephron.*Thiazides, loop diuretics, carbonic anhydrase inhibitors and epithelial Na+ channel blockers (e.g. amiloride and triamterene) are secreted in the proximal tubules through organic anion/cation ...
medmcqa
medmcqa_05_04323
Parkland formula for burns is for: Maharashtra 09; UP 09; Bihar 12
[ "Ringer lactate", "Glucose saline", "Normal saline", "25% dextrose" ]
A
Ans. Ringer lactate
math_qa
mathqa_03_02850
a candidate appearing for an examination has to secure 42 % marks to pass paper i . but he secured only 42 marks and failed by 22 marks . what is the maximum mark for paper i ?
[ "110", "120", "130", "152" ]
D
"he secured 42 marks nd fail by 22 marks so total marks for pass the examinatn = 64 let toal marks x x * 42 / 100 = 64 x = 152 answer : d"
medmcqa
medmcqa_05_00624
A 28 weeks pregnant multigravida with preeclampsia presented with fulminant signs. Urgent C-section was planned. Best method for the diagnosis of lung maturity is:
[ "L/S ratio in amniotic fluid", "Phosphtidyl glycerol estimation in amniotic fluid", "Bilirubin in amniotic fluid", "Amniotic fluid creatinine" ]
B
Phosphatidylglycerol (PG) is a minor constituent of surfactant. It begins to increase appreciably in amniotic fluid several weeks after the rise in lecithin. Its presence is more indicative of fetal lung maturity because PG enhances the spread of phospholipids on the alveoli. Ref: Mehta S.H., Sokol R.J. (2007). Chapter...
sciq
sciq_01_08945
Drip iirigation requires less water and reduces what?
[ "salinization", "moisture", "sediment", "bacteria" ]
A
math_qa
mathqa_03_04398
a cricketer makes a score of 134 runs in the 22 nd inning and thus increases his average by 3.5 . find his average after 22 nd inning .
[ "40", "60.5", "52", "55" ]
B
explanation : let the average after 22 nd innings = x then average after 21 th innings = ( x - 3.5 ) therefore 21 ( x - 3.5 ) + 134 = 22 x therefore x = 60.5 answer : b
sciq
sciq_01_02543
Positive charge is mostly found in what part of an atom?
[ "electron shell", "ions", "neutrons", "nucleus" ]
D
Rutherford’s discoveries meant that Thomson’s plum pudding model was incorrect. Positive charge is not spread evenly throughout an atom. Instead, it is all concentrated in the tiny nucleus. The rest of the atom is empty space except for the electrons scattered through it. In Rutherford’s model of the atom, which is sho...
openbookqa
obqa_02_00602
A phase change happens
[ "when onions are chopped", "when food is digested by the stomach", "when water is added to a glass", "when flowers bloom in full" ]
B
a phase change is when matter changes from one state into another state
sciq
sciq_01_08227
Herbivores are heterotrophs that eat only or mainly what?
[ "fish", "animals", "plants", "decayed matter" ]
C
Many mammals are herbivores. Herbivores are heterotrophs that eat only or mainly plant foods (or algae). Depending on the species of mammals, they may eat leaves, shoots, stems, roots, seeds, nuts, fruits, flowers, and/or grasses. Some mammals even eat conifer needles or tree bark. Mammals that are herbivores include r...
sciq
sciq_01_00415
This heat is used to convert water into steam, which is then used to turn a turbine, thus generating what?
[ "radiation power", "electrical power", "heating power", "solar power" ]
B
The generation of electricity is critical for the operation of nearly all aspects of modern society. The following diagram illustrates the types of fuels used to generate electrical power in the Unites States. In 2009, almost 45% of the power generated in the U. S. was derived from coal, with natural gas making up anot...
openbookqa
obqa_02_01567
I just read about using cardboard in layers for building, but the surfaces should be waxed to keep out water. This premise is used by some _____________ to keep water in:
[ "balloons", "plastic bottles", "leaves", "books" ]
C
waxy leaves are used for storing water by some plants
openbookqa
obqa_02_01828
One component of rock formations in caves is
[ "liberal tears", "bat urine", "salty ocean water", "granite statues" ]
B
stalactites are formed by deposition
sciq
sciq_01_06011
What is the permanent prevention of gamete production or release called?
[ "insemination", "fertilization", "sterilization", "restoration" ]
C
medmcqa
medmcqa_05_03430
Purely glucogenic amino acid -
[ "Isoleucine", "Tyrosine", "Lysine", "Proline" ]
D
Ans. is 'd' i.e., Proline GlucogenicKetogenicBoth glucogenic & ketogenico Alanineo Arginineo Aspargineo Aspartic acido Cysteineo Glutamineo Glutamic acido Glycineo Histidineo Methionineo Prolineo Serineo Threonineo Valineo Leucineo Lysineo Isoleucineo Phenylalaineo Tyrosino TryptophanNote : According to Harper 29th /e ...
openbookqa
obqa_02_03942
If a house burns down, the goldfish inside may do what?
[ "quit swimming", "be hungry", "grow", "get smarter" ]
A
if too much heat is transferred to an object then that object may burn
openbookqa
obqa_02_02708
A person who has a job of making discoveries also
[ "watches", "fights", "slaughters", "explodes" ]
A
scientists make observations
openbookqa
obqa_02_00931
A creek flows slowly, and the water runs very gently, yet if a leaf tumbles into it
[ "it will relocate", "it will melt", "it will cry", "it will hold" ]
A
flowing liquid can push objects
math_qa
mathqa_03_02303
the average of 10 numbers is 40.2 . later it is found that two numbers have been wrongly copied . the first is 18 greater than the actual number and the second number added is 13 instead of 31 . find the correct average .
[ "40.2", "40.4", "40.6", "40.8" ]
A
sum of 10 numbers = 402 corrected sum of 10 numbers = 402 – 13 + 31 – 18 = 402 hence , new average = 402 ⁄ 10 = 40.2 answer a
math_qa
mathqa_03_04514
evaluate 2.5 / . 0005
[ "5000", "500", "50000", "50" ]
A
"explanation : 2.5 * 10000 / 5 = 25000 / 5 = 5000 option a"
sciq
sciq_01_04495
What are subatomic particles of the nucleus called?
[ "baryons", "cores", "nucleons", "isotopes" ]
C
Summary Subatomic particles of the nucleus (protons and neutrons) are called nucleons. Anuclide is an atom with a particular number of protons and neutrons. An unstable nucleus that decays spontaneously is radioactive, and its emissions are collectively called radioactivity. Isotopes that emit radiation are calledradio...
sciq
sciq_01_11568
What causes an elastic force in springs?
[ "velocity", "stretching or compressing", "freezing", "momentum" ]
B
Springs like the ones in Figure below also have elastic force when they are stretched or compressed. And like stretchy materials, they return to their original shape when the stretching or compressing force is released. Because of these properties, springs are used in scales to measure weight. They also cushion the rid...
sciq
sciq_01_00125
Red litmus paper turns what color when placed in a basic solution?
[ "blue", "white", "orange", "pink" ]
A
Red litmus paper turns blue when placed in a basic solution.
medmcqa
medmcqa_05_02430
Which is the initial Imaging modality of choice for Insulinoma?
[ "USG", "CT abdomen", "Somatostatin Receptor Scan (SRS)", "E.U.S" ]
D
For PETs in the pancreas, EUS is highly sensitive, localizing 77-100% of insulinomas, which occur almost exclusively within the pancreas. Tests for location of pNET: Somatostatin Receptor Scintigraphy is the initial imaging modality but is less available. Helical CT scan has a sensitivity of 82-94%. Gadolinium based MR...
sciq
sciq_01_10787
Data from paleontology offer insights into the early evolution of what?
[ "acids", "cells", "fungi", "neurons" ]
C
ARC-Easy
arc_04_01559
The stages of evolution of a star are determined by the mass of the star at the beginning of its life cycle. Which stage of evolution is the oldest form of a massive star?
[ "red giant", "supernova", "neutron star", "white dwarf" ]
C
null
sciq
sciq_01_06301
What is essential for cellular respiration for all aerobic organisms?
[ "oxygen", "carbon", "nitrogen", "water" ]
A
An online guide from the University of Illinois about air masses and fronts is found here: http://ww2010. atmos. uiuc. edu/%28Gh%29/guides/mtr/af/home. rxml .
openbookqa
obqa_02_03413
Splitting and fusing billions of atoms at the same location in space produces
[ "darkness", "frigged rain", "illumination", "groceries" ]
C
nuclear reactions in stars causes stars to produce light
sciq
sciq_01_00577
The mass of the objects and the distance between them affect the strength of what universal force?
[ "weight", "gravity", "motion", "states of matter" ]
B
All objects in the universe have a gravitational attraction to each other ( Figure below ). The strength of the force of gravity depends on two things. They are the mass of the objects and the distance between them. The greater the objects’ mass, the greater the force of attraction. As the distance between the objects ...
sciq
sciq_01_03722
Some atoms are more stable when they gain or lose an electron and form what?
[ "molecules", "ions", "electrons", "protons" ]
B
Ions and Ionic Bonds Some atoms are more stable when they gain or lose an electron (or possibly two) and form ions. This fills their outermost electron shell and makes them energetically more stable. Because the number of electrons does not equal the number of protons, each ion has a net charge. Cations are positive io...
math_qa
mathqa_03_01714
a card is drawn from a pack of 52 cards . the probability of getting a queen of club or a king of heart is :
[ "1 / 26", "1 / 52", "2 / 62", "2 / 26" ]
A
"here , n ( s ) = 52 . let e = event of getting a queen of club or a king of heart . then , n ( e ) = 2 . p ( e ) = n ( e ) / n ( s ) = 2 / 52 = 1 / 26 answer should be a"
sciq
sciq_01_09530
What is the term for when clumped solids sink to the bottom of the water?
[ "sediment", "Clumping", "sedimentation", "Foundation" ]
C
The water is moved to tanks. The clumped solids sink to the bottom of the water. This is called sedimentation .
math_qa
mathqa_03_00227
a train 180 m long is running with a speed of 60 km / hr . in what time will it pass a man who is running at 6 km / hr in the direction opposite to that in which the train is going ?
[ "7", "10", "8", "2" ]
B
"speed of train relative to man = 60 + 6 = 66 km / hr . = 66 * 5 / 18 = 55 / 3 m / sec . time taken to pass the men = 180 * 3 / 55 = 10 sec . answer b"
sciq
sciq_01_08534
What is the disease in which bronchioles in the lungs periodically swell and fill with mucus?
[ "nausea", "allergy", "leukemia", "asthma" ]
D
Asthma is a disease in which bronchioles in the lungs periodically swell and fill with mucus. Symptoms of asthma may include difficulty breathing, wheezing, coughing, and chest tightness. An asthma attack may be triggered by allergies, strenuous exercise, stress, or another respiratory illness such as a cold.
medmcqa
medmcqa_05_04377
A povey-stricken mother suffering from active tuberculosis delivers a baby. Which one of the following advices would be the most appropriate in her case -
[ "Breast feeding and BCG immunization", "Breast feeding and isoniazid administration", "Expressed breast milk and BCG immunization", "Stop feeds and isoniazid administration" ]
B
Ans. is 'b' i.e., Breast feeding and isoniazid administration o The best answer would have been --> Breast feeding + INH + BCG vaccination.
medmcqa
medmcqa_05_00904
Persistent feeling of guilt is seen in
[ "OCD", "Depression", "Mania", "Schizophrenia" ]
B
increased guilt is a carecterstic of depression DIAGNOSTIC CRITERIA FOR DEPRESSION Depressed mood most of the day Anhedonia=== loss of interest in previous pleasurable activities Fatiguability Dec sleep Dec appetite Hopelessness Suicidal ideas Ideas of guilt Reference: Kaplon and sadock, 11 th edition, synopsis of psyc...
openbookqa
obqa_02_03935
Which of the following resources can reproduce to replenish it's stock?
[ "Coal", "Wood", "Salt", "Petroleum" ]
B
a renewable resource can be renewed
medmcqa
medmcqa_05_03726
Which of the following adverse effect of levodopa is not blocked by carbidopa?
[ "Vomiting", "Hypotension", "Psychosis", "Tachycardia" ]
C
Levodopa - CARBIDOPA / BENSERAZIDE: Peripheral DOPA decarboxylase inhibitors. - So peripheral adverse effects will decrease - More L-DOPA will enter the brain and efficacy will increase The adverse effects are more due to deposition of DOPA in the brain. DOPA deposition leads to psychosis i.e. abnormal behaviour and dy...
sciq
sciq_01_01201
Most thoracic vertebrae have two facets that articulate with the head of what structure?
[ "rib", "heart", "calf", "pelvic" ]
A
Thoracic Vertebrae The bodies of the thoracic vertebrae are larger than those of cervical vertebrae (Figure 7.26). The characteristic feature for a typical midthoracic vertebra is the spinous process, which is long and has a pronounced downward angle that causes it to overlap the next inferior vertebra. The superior ar...
openbookqa
obqa_02_00782
When a new suburb was built there was less room for what?
[ "Tadpoles", "Crime", "Guns", "Air" ]
A
if a habitat can no longer support animals then those animals will move to another area
sciq
sciq_01_00547
What is the term for an infection caused by a fungal parasite?
[ "mitosis", "acrobasis", "mycosis", "mydriasis" ]
C
openbookqa
obqa_02_04708
Even items such as rocks mass can be changed due to which process?
[ "Weathering", "Climate", "Weatherization", "Weather" ]
A
weathering means breaking down surface materials from larger whole into smaller pieces by weather
sciq
sciq_01_07835
What is required to partially overcome the attractive forces between molecules in a solid to form a liquid?
[ "fuel", "oxygen", "hydrogen", "energy" ]
D
Figure 14.7 (a) Energy is required to partially overcome the attractive forces between molecules in a solid to form a liquid. That same energy must be removed for freezing to take place. (b) Molecules are separated by large distances when going from liquid to vapor, requiring significant energy to overcome molecular at...