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7.76k
openbookqa
obqa_02_01551
A tiny sand particle came from
[ "another world", "boiling water", "candle fragments", "larger mineral chunks" ]
D
sediment is formed by weathering
openbookqa
obqa_02_03439
the phases of the moon change the appearance of what?
[ "mars", "astral night light", "earth", "sun" ]
B
the phases of the Moon change the appearance of the Moon
ARC-Challenge
arc_04_03160
An experiment is being conducted to determine the air quality inside a building. In order to come to a conclusion, scientists must gather data. Which of the following would be an excellent source of data from which to draw a conclusion?
[ "naked-eye viewing", "calculations of air mass", "demonstrations of air pressure", "measurement of airborne particulates" ]
D
null
sciq
sciq_01_04500
Energy is lost as heat between each trophic level due to the second law of what?
[ "thermodynamics", "particles", "reactions", "chemistry" ]
A
One major factor that limits the length of food chains is energy. Energy is lost as heat between each trophic level due to the second law of thermodynamics. Thus, after a limited number of trophic energy transfers, the amount of energy remaining in the food chain may not be great enough to support viable populations at...
openbookqa
obqa_02_03826
In the food chain process an animal has the role of consumer which eats producers for what?
[ "grass", "sea", "water flow", "sustenance" ]
D
In the food chain process an animal has the role of consumer which eats producers for food
sciq
sciq_01_05195
What structure connects the pharynx to the trachea?
[ "larynx", "sternum", "thyroid", "aorta" ]
A
Larynx The larynx is a cartilaginous structure inferior to the laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs (Figure 22.7). The structure of the larynx is formed by several pieces of cartilage. Three large cartilage pieces—the thyroid carti...
sciq
sciq_01_00754
Which muscles raise the hyoid bone, the floor of the mouth, and the larynx during deglutition?
[ "Hybrid", "spirogyra", "spicule", "suprahyoid" ]
D
The suprahyoid muscles raise the hyoid bone, the floor of the mouth, and the larynx during deglutition. These include the digastric muscle, which has anterior and posterior bellies that work to elevate the hyoid bone and larynx when one swallows; it also depresses the mandible. The stylohyoid muscle moves the hyoid bon...
sciq
sciq_01_10342
Most people can survive only a few days without what essential substance?
[ "food", "carbon", "water", "air" ]
C
Water is essential to life because biochemical reactions take place in water. Most people can survive only a few days without water.
sciq
sciq_01_01524
For a star to form, what force pulls gas and dust into the center of the nebula?
[ "centrifugal force", "motion", "gravity", "weight" ]
C
For a star to form, gravity pulls gas and dust into the center of the nebula. As the material becomes denser, the pressure and the temperature increase. When the temperature of the center becomes hot enough, nuclear fusion begins. The ball of gas has become a star!.
sciq
sciq_01_03006
To figure out the height of a wave you measure the distance between the crest and what?
[ "core", "drift", "crater", "trough" ]
D
The figure above also shows how the size of waves is measured ( Figure above ). The highest point of a wave is the crest . The lowest point is the trough . The vertical distance between a crest and a trough is the wave height . Wave height is also called amplitude . The horizontal distance between two crests is the wav...
medmcqa
medmcqa_05_01923
Pseudo dementia is seen in:
[ "Alcoholism", "Depression", "Schizophrenia", "Mania" ]
B
B i.e. Depression Pseudo-Dementia (Depression related cognitive dys functions) is found in depressionQ. They have past h/o depression. Have more insight into their symptoms - i.e. themselves complaints of memory impairment, difficulty in sustaining attention & concentration; & reduced intellectual capacity. In contrast...
medmcqa
medmcqa_05_01758
Wilm's tumour commonly presents as
[ "Pain in the abdomen", "Abdominal mass", "Fever", "Hematuria" ]
B
(Abdominal mass): Ref: 574-G (592-Ghai 7th)WILM'S TUMOR or nephroblastoma is the most common malignant tumour of the kidney* 80% of children under the 5 years (mean age 3years/* Congenital anomalies particularly -- Aniridia- Hemihypertrophy- Beckweith - Wiedmann syndrome- Mental retardation* Deletion in the region of 1...
sciq
sciq_01_09657
In 1802, charles and gay-lussac both proposed that for a fixed amount of gas at a constant pressure, what is directly proportional to its absolute temperature?
[ "density", "volume", "air", "liquid" ]
B
Various studies were done on the effects of temperature changes on both pressure and volume by two prominent French scientists, Jacques Charles (1746-1823) and Joseph Louis Gay-Lussac (1778-1850). In 1802, Charles and Gay-Lussac both proposed that for a fixed amount of gas at a constant pressure, the volume is directly...
sciq
sciq_01_07013
What causes a voltage to exist across the membrane in cells?
[ "same charge", "increase in energy", "difference in charges", "insulators" ]
C
The active transport of ions across the cell membrane causes an electrical gradient to build up across this membrane. The number of positively charged ions outside the cell is usually greater than the number of positively charged ions in the cytosol. This results in a relatively negative charge on the inside of the mem...
openbookqa
obqa_02_03450
Which animal travels great distance as part of its instinctive behavior?
[ "a raven", "a bear", "a chipmunk", "a snake" ]
A
migration is an instinctive behavior
math_qa
mathqa_03_04935
the radius of a wheel is 24.2 cm . what is the distance covered by the wheel in making 500 resolutions ?
[ "708 m", "704 m", "774 m", "760.57 m" ]
D
"in one resolution , the distance covered by the wheel is its own circumference . distance covered in 500 resolutions . = 500 * 2 * 22 / 7 * 24.2 = 76057 cm = 760.57 m answer : d"
openbookqa
obqa_02_00500
Viruses are killed by objects used in a
[ "backyard", "bathroom", "kitchen", "living room" ]
C
adding heat to something kills viruses in that something
sciq
sciq_01_01909
What causes lightning during a thunderstorm?
[ "difference in charge", "difference in elevation", "difference in wind", "difference in temperature" ]
A
During a thunderstorm, some parts of a thunderhead become negatively charged. Other parts become positively charged. The difference in charge creates lightning. Lightning is a huge release of electricity. Lightning can jump between oppositely charged parts of the same cloud, between one cloud and another, or between a ...
medmcqa
medmcqa_05_00733
Drugs used in GTCS is/are:
[ "Ethosuximide", "Sodium-valproate", "Lamotrigine", "Propofol" ]
B
Carbamazepine, phenytoin are the first line drugs in GTCS. Valporate, phenobarbitone are the second choice of drugs. Alternative/add on drugs are Lamotrigine, Gabapentine, topiramate, methadone, levetiracetam. Ethosuximide is used in absent seizures. Propofol is a general anesthetic. Ref: K D Tripati 8th edition Table ...
sciq
sciq_01_03179
What is the metabolic process by which cells obtain energy by “burning” glucose?
[ "cellular transportation", "electromagnetic respiration", "cellular digestion", "cellular respiration" ]
D
The use of the word respiration in relation to gas exchange is different from its use in the term cellular respiration . Recall that cellular respiration is the metabolic process by which cells obtain energy by “burning” glucose. Cellular respiration uses oxygen and releases carbon dioxide. Respiration by the respirato...
ARC-Easy
arc_04_01860
Humans need food to grow and survive. Food that is not used immediately by the body for energy is
[ "stored for future use", "converted to water for energy", "used to remove wastes from cells", "transformed into oxygen for survival" ]
A
null
openbookqa
obqa_02_03641
If your body is hot, it will cool down if you put what on it
[ "hot water", "an ice pack", "Fire", "the sun" ]
B
if a hot substance is touches a cold object then that substance will likely cool
medmcqa
medmcqa_05_04933
An early diabetic has left sided orbital cellulitis CT scan of paranasal sinus shows evidence of left maxillary sinusitis. Gram stained smear of the orbital exudate shows irregularly branching septate hyphae. The following is most likely etiological agent:
[ "Aspergillus", "Rhizopus", "Mucor", "Candida" ]
A
Ans. (a) Aspergillus Ref. Ananthanarayan 8/e, p 613, 9/e, p 609; Harrison 19/e, p 1345 - 1347, 18/e, p 1658 "Presence of branched septate hyphae in a patient of orbital cellulitis (occur as complication of sinusitis) suggest Aspergillus." Aspergillus Sinusitis occur in three forms: Ball of hyphae may form in chronicall...
openbookqa
obqa_02_00502
How long does it take Earth to fully revolve one time
[ "28 hours", "46 hours", "1400 minutes", "1440 minutes" ]
D
a Rotation of the Earth on itself takes one day
sciq
sciq_01_01658
The phase transition of a substance changing from a liquid state to a gaseous state is an example of what?
[ "spirogyra", "catostrophy", "entropoy", "trichina" ]
C
There are many examples in the chemical world of changes in entropy. Phase transitions are one obvious example. When a substance makes a transition from the liquid state to the gaseous state, the particles have many more possible arrangements, because they are no longer confined to a specified volume in which they are ...
sciq
sciq_01_05109
What is the most abundant living thing on earth that can be found in almost any environment?
[ "viruses", "bacteria", "pathogens", "pests" ]
B
Bacteria are the most abundant living things on Earth. They live in almost all environments. They are found in the air, ocean, soil, and intestines of animals. They are even found in rocks deep below Earth's surface. Any surface that has not been sterilized is likely to be covered with bacteria. The total number of bac...
openbookqa
obqa_02_01368
A person with a vitamin D deficiency who is allergic to sunlight could
[ "look at pictures", "drink more water", "bathe more often", "eat more cheese" ]
D
dairy is a source of Vitamin D
openbookqa
obqa_02_02475
A person needing to cook up a burger, but lacking a grill or fire, can heat burger meat on
[ "a tree branch", "a puddle", "a fish pond", "a vehicle engine" ]
D
a car engine is a source of heat
openbookqa
obqa_02_04124
diamonds exist because of the existence of
[ "raw carbon", "work force", "plant feeding", "machines" ]
A
if something is a raw material then that something comes directly from a source
math_qa
mathqa_03_02544
a student got 72 % in math and 84 % in history . to get an overall average of 75 % , how much should the student get in the third subject ?
[ "65 %", "67 %", "69 %", "71 %" ]
C
"72 + 84 + x = 3 * 75 x = 69 the answer is c ."
sciq
sciq_01_04582
What do you call materials that have high resistance to electric current?
[ "conductors", "electric insulators", "semiconductors", "destructive insulators" ]
B
Materials that have high resistance to electric current are called electric insulators . Examples include most nonmetallic solids, such as wood, rubber, and plastic. Their atoms hold onto their electrons tightly, so electric current cannot flow freely through them. Dry air is also an electric insulator. You can learn m...
openbookqa
obqa_02_04522
A person is looking at an organism naked to the human eye. Desiring to observe it more clearly, a person engages the use of
[ "binoculars", "a telescope", "a meter stick", "lab equipment" ]
D
microscope is used to see small things by making them appear bigger
ARC-Easy
arc_04_01026
Which is an example of primary ecological succession?
[ "plants and animals invading an abandoned crop field", "mangroves stabilizing the soils on tropical coasts", "minerals spurring rapid plant growth", "lichen growth on rocks" ]
D
null
sciq
sciq_01_10951
What term describes the long-term, predictable atmospheric conditions of a specific area?
[ "hemosphere", "climate", "wind patterns", "solar activity" ]
B
Climate and Weather A common misconception about global climate change is that a specific weather event occurring in a particular region (for example, a very cool week in June in central Indiana) is evidence of global climate change. However, a cold week in June is a weather-related event and not a climate-related one....
sciq
sciq_01_05051
Many species use their body shape and coloration to avoid what?
[ "sunlight", "human contact", "detection by predators", "exposure" ]
C
Many species use their body shape and coloration to avoid being detected by predators. The tropical walking stick is an insect with the coloration and body shape of a twig which makes it very hard to see when stationary against a background of real twigs (Figure 45.20a). In another example, the chameleon can change its...
sciq
sciq_01_09592
What are antacids comprised of?
[ "bases", "gases", "solids", "acids" ]
A
Bases are less common as foods, but they are nonetheless present in many household products. Many cleaners contain ammonia, a base. Sodium hydroxide is found in drain cleaner. Antacids , which combat excess stomach acid, are comprised of bases such as magnesium hydroxide or sodium hydrogen carbonate.
math_qa
mathqa_03_00008
what is the units digit of the expression 14 ^ 7 − 17 ^ 4 ?
[ "0", "3", "4", "8" ]
D
i think answer on this one should be d too . since we know that 14 ^ 7 > 17 ^ 4 , as will said one should always check if the number is positive .
sciq
sciq_01_04407
Endocytosis and exocytosis are types of vesicle transport that carry very large molecules across what structure?
[ "cell membrane", "cell substrate", "the heart", "dermis" ]
A
Illustration of the two types of vesicle transport, exocytosis and endocytosis. Endocytosis and exocytosis are types of vesicle transport that carry very large molecules across the cell membrane.
sciq
sciq_01_02085
What play an important role in the modulation of the nuclear chain reaction?
[ "particle rods", "control rods", "radiation rods", "control neutrons" ]
B
The control rods play an important role in the modulation of the nuclear chain reaction (usually a collision of a neutron with uranium). Each collision produces more neutrons than were present initially. If left unsupervised, the reaction would soon get out of control. Rods are commonly made of boron or a number of met...
sciq
sciq_01_01268
What are the two types of fats?
[ "saturated and unsaturated", "liquid and solid", "full and empty", "thick and thin" ]
A
Fats may be either saturated or unsaturated. A saturated fat is a fat that consists of triglycerides whose carbon chains consist entirely of carbon-carbon single bonds. Therefore, the carbon chains are saturated with the maximum number of hydrogen atoms possible. An unsaturated fat is a fat that consists of triglycerid...
medmcqa
medmcqa_05_00125
Which of the following is a pure beta paicle emitter?
[ "Co 6deg", "1131", "P 32", "Gold" ]
C
P 32 REF: Meredith radiation physics and nuclear medicine p 28 Phosphorus-32 is a sho-lived high energy beta emitter Beta rays --- , 32 P S , 90 r y 90 Beta and gamma Ra - 226 , Au-198 , I - 131 Gamma Ir- 192, Co-60, Cs - 137, Xe - 133, 1-123, I - 132, Tc- 99, Ga- 70, T1-201, Rn - 222, Cr -51, k - 81 N N, Gamma Cf - 25...
sciq
sciq_01_11116
Carbonic acid can dissociate into hydrogen carbonate ions and what?
[ "protons", "electrons", "atoms", "protons" ]
A
Carbon dioxide is slightly soluble in water. There is an equilibrium reaction that occurs as the carbon dioxide reacts with the water to form carbonic acid (H2CO3). Since carbonic acid is a weak acid, it can dissociate into protons (H+) and hydrogen carbonate ions (HCO 3 −).
sciq
sciq_01_06319
What is the unit of evolution?
[ "species", "population", "biome", "community" ]
B
Remember that individuals do not evolve. Their genes do not change over time. The unit of evolution is the population. A population consists of organisms of the same species that live in the same area. In terms of evolution, the population is assumed to be a relatively closed group. This means that most mating takes pl...
sciq
sciq_01_00104
Dialysis is a treatment for failure of what organs?
[ "liver", "lungs", "spleen", "kidneys" ]
D
Kidney failure may be treated with dialysis.
medmcqa
medmcqa_05_01733
In pigmented basal cell carcinoma, treatment of choice is:
[ "Chemotherapy", "Radiotherapy", "Cryosurgery", "Excision" ]
D
Treatment of Melanoma * Non-aggressive tumor on trunk or extremities : Excision or electrodissection & curettage * Large, aggressive , located at vital areas or recurrent : Moh's micrographic surgery
openbookqa
obqa_02_00956
if a student needed to warm up, which of these would help?
[ "all of these", "sitting by the fireplace", "sitting next to a running engine", "turning up the room heater" ]
A
a warm something is a source of heat
openbookqa
obqa_02_00409
Fish move best through water when their fins are?
[ "Large [Collect]", "Long", "Small", "Short" ]
A
large fins can be used to move quickly through water
math_qa
mathqa_03_04240
a lady builds 12 cm length , 16 cm width , and 6 cm height box using 3 cubic cm cubes . what is the minimum number of cubes required to build the box ?
[ "345", "384", "378", "398" ]
B
"number of cubes required = volume of box / volume of cube = 12 * 16 * 6 / 3 = 384 cubes answer : b"
sciq
sciq_01_11376
Do particles collide more in two reactants when they are both in fluid forms or solid forms?
[ "solid", "plasma", "fluid", "neither" ]
C
Phase and Surface Area Effects When two reactants are in the same fluid phase, their particles collide more frequently than when one or both reactants are solids (or when they are in different fluids that do not mix). If the reactants are uniformly dispersed in a single homogeneous solution, then the number of collisio...
sciq
sciq_01_01686
The stomach mucosa’s epithelial lining consists only of surface mucus cells, which secrete a protective coat of what?
[ "phosphate mucus", "bile mucus", "alkaline mucus", "acidic mucus" ]
C
The stomach mucosa’s epithelial lining consists only of surface mucus cells, which secrete a protective coat of alkaline mucus. A vast number of gastric pits dot the surface of the epithelium, giving it the appearance of a well-used pincushion, and mark the entry to each gastric gland, which secretes a complex digestiv...
math_qa
mathqa_03_03528
a man engaged a servant on the condition that he would pay him rs . 800 and a uniform after one year service . he served only for 9 months and received uniform and rs . 400 , find the price of the uniform ?
[ "s . 800", "s . 85", "s . 90", "s . 100" ]
A
"9 / 12 = 3 / 4 * 800 = 600 400 - - - - - - - - - - - - - 200 1 / 4 - - - - - - - - 200 1 - - - - - - - - - ? = > rs . 800 answer : a"
medmcqa
medmcqa_05_02337
A 14 year old obese child is referred from an endocrinologist for painful limping of hip.Which of the following investigation is least useful in this clinical setting?
[ "CT", "USG", "MRI", "X-ray PBH" ]
B
Ans. USG
sciq
sciq_01_05345
What type of simple inheritance is too simplified to explain most human traits?
[ "spontaneous mutation", "etiology", "mendelian", "mitosis" ]
C
Most human traits have more complex modes of inheritance than simple Mendelian inheritance. For example, the traits may be controlled by multiple alleles or multiple genes.
math_qa
mathqa_03_04835
the product of a and b is equal to 1 more than twice the sum of a and b . if b = 7 , what is the value of b - a ?
[ "2", "5", "4", "24" ]
C
"ab = 1 + 2 ( a + b ) 7 a = 1 + 2 a + 14 5 a = 15 a = 3 b - a = 7 - 3 = 4 c is the answer"
sciq
sciq_01_00476
Sexually reproducing organisms alternate between which stages?
[ "binary and diploid", "haploid and diploid", "diploid and traploid", "binary and haploid" ]
B
CHAPTER SUMMARY 7.1 Sexual Reproduction Nearly all eukaryotes undergo sexual reproduction. The variation introduced into the reproductive cells by meiosis appears to be one of the advantages of sexual reproduction that has made it so successful. Meiosis and fertilization alternate in sexual life cycles. The process of ...
sciq
sciq_01_07854
Mypyramid features colored bands that represent what?
[ "popular diets", "caloric content", "essential vitamins", "food groups" ]
D
MyPyramid can help you choose foods wisely for good health. Each colored band represents a different food group. The key shows which food group each color represents. Which colored band of MyPyramid is widest? Which food group does it represent?.
sciq
sciq_01_02827
What is the group of all the eukaryotes that are not fungi, animals, or plants called?
[ "protists", "lizards", "arthropods", "filamentous" ]
A
Protists are a group of all the eukaryotes that are not fungi, animals, or plants. As a result, it is a very diverse group of organisms. The eukaryotes that make up this kingdom, Kingdom Protista , do not have much in common besides a relatively simple organization. Protists can look very different from each other. Som...
openbookqa
obqa_02_03597
If a person blows on another person's arm, then nerves will
[ "curl up and die", "signal to the sky", "make more nerves in that area", "alert the brain of this" ]
D
nerves can be used to feel heat and pressure on the skin
ARC-Challenge
arc_04_02636
Fraternal twins may or may not share similar characteristics due to
[ "independent assortment.", "polygenic inheritance.", "incomplete dominance.", "multiple alleles." ]
A
null
math_qa
mathqa_03_03162
gold is 19 times as heavy as water and copper is 9 times heavy . in what ratio must these metals be mixed so that the mixture may be 15 times as heavy as water ?
[ "2 : 3", "3 : 2", "1 : 3", "2 : 1" ]
B
"? required ratio = 6 ? 4 = 3 : 2 answer b"
openbookqa
obqa_02_04475
_____ tide is a stage in the tide cycle process that surfers like the best
[ "low", "mud", "high", "earthy" ]
C
high tide is a stage in the tide cycle process
math_qa
mathqa_03_00918
the difference between compound interest and simple interest on a certain amount of money at 5 % per annum for 2 years is 15 . find the sum :
[ "4500", "7500", "5000", "6000" ]
D
"sol . ( d ) let the sum be 100 . therefore , si = 100 × 5 × 2100 = 10100 × 5 × 2100 = 10 and ci = 100 ( 1 + 5100 ) 2 − 100100 ( 1 + 5100 ) 2 − 100 ∴ = 100 × 21 × 2120 × 20 − 100 = 414 = 100 × 21 × 2120 × 20 − 100 = 414 difference of ci and si = 41 ⁄ 4 - 10 = 1 ⁄ 4 if the difference is 1 ⁄ 4 , the sum = 100 = > if the ...
math_qa
mathqa_03_02190
each of the integers from 0 to 8 , inclusive , is written on a separate slip of blank paper and the 10 slips are dropped into hat . if the slips are then drawn one at a time without replacement , how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?
[ "8", "9", "7", "6" ]
C
you should consider the worst case scenario : if you pick numbers 0 , 1 , 2 , 3 , 4 and 5 then no two numbers out of these 6 add up to 10 . now , the next , 7 th number whatever it ' ll be ( 6,7 , or 8 ) will guarantee that two number will add up to 10 . so , 7 slips must be drawn to ensure that the numbers on two of t...
math_qa
mathqa_03_00883
if xy > 0 , 1 / x + 1 / y = 15 , and 1 / xy = 5 , then ( x + y ) / 5 = ?
[ "1 / 25", "1 / 6", "3 / 5", "5" ]
C
( 1 / x + 1 / y ) = 15 canbe solved as { ( x + y ) / xy } = 5 . substituting for 1 / xy = 5 , we get x + y = 15 / 5 = = > ( x + y ) / 5 = 15 / ( 5 * 5 ) = 3 / 5 . c
openbookqa
obqa_02_01295
A ball rolling over carpet will go ______ than a ball rolling over concrete.
[ "slower", "speedier", "greater", "faster" ]
A
as the roughness of something increases , the friction of that something will increase when its surface moves against another surface
medmcqa
medmcqa_05_04105
Best investigation to diagnose a hydatid cyst in liver is ?
[ "Ultrasound", "CT-scan", "MRI", "MRCP" ]
B
Ans. is 'b' i.e., CT-scanFor hydatid cyst1st line investigation - UltrasoundInvestigation of choice - CT-scan
math_qa
mathqa_03_00821
when positive integer w is divided by 13 , the remainder is 2 . when n is divided by 8 , the remainder is 5 . how many such values are less than 180 ?
[ "0", "1", "2", "3" ]
B
the equation that can be formed w is 13 x + 2 = 8 y + 5 . . 13 x - 3 = 8 y . . . as we can see x can take only odd values as the rhs will always be even . . also x can take values till 13 as 13 * 14 > 180 . . now we have to substitue x as 1 , 35 , 79 , 1113 . . . once we find 7 fitting in , any other value need not be ...
openbookqa
obqa_02_00070
a day hiking will most likely result in which of these?
[ "a paling of the skin", "a greening of the skin", "an even darker tone", "none of these" ]
C
if something is outside during the day then that something will receive sunlight
math_qa
mathqa_03_01990
a number whose fifth part increased by 3 is equal to its fourth part diminished by 3 is ?
[ "120", "180", "200", "220" ]
A
"answer let the number be n . then , ( n / 5 ) + 3 = ( n / 4 ) - 3 â ‡ ’ ( n / 4 ) - ( n / 5 ) = 6 â ‡ ’ ( 5 n - 4 n ) / 20 = 6 â ˆ ´ n = 120 option : a"
ARC-Easy
arc_04_01646
In a meadow ecosystem, mice receive most of the energy they need to survive directly from which of the following sources?
[ "minerals", "oxygen", "plants", "water" ]
C
null
medmcqa
medmcqa_05_04134
Most common newborn rash which presents at 2448 hours of life is -
[ "Erythematous papular pustular lesions", "Milia", "Transient neonatal pustular melanosis", "Haemangioma" ]
A
Ans. is 'a' i.e., Erythematous papular pustular lesions Common newborn rashes o Erythema toxicum ---> Most common o Acne neonatorum o Transient neonatal pustural melanosis.
math_qa
mathqa_03_00433
the ratio of a to b is 4 to 5 , where a and b are positive . if x equals a increased by 25 percent of a , and m equals b decreased by 80 percent of b , what is the value of m / x ?
[ "1 / 5", "3 / 4", "4 / 5", "5 / 4" ]
A
"a / b = 4 / 5 m / x = ( 1 / 5 ) * 5 / ( 5 / 4 ) * 4 = 1 / 5 the answer is a ."
sciq
sciq_01_10075
What is a device used to measure temperature changes during chemical processes called?
[ "thermometer", "calorimeter", "alethiometer", "altimeter" ]
B
The subfield of thermochemistry studies the energy changes that occur over the course of various chemical reactions. We will first look at how these changes are measured and then go into quantitative descriptions of heat transfer. Calorimetry is a term used to describe the measurement of heat transfers, usually by moni...
sciq
sciq_01_08341
Nucleic acids are polymers made of monomers called what?
[ "carotenoids", "peptides", "nucleotides", "loops" ]
C
sciq
sciq_01_05023
If you were to filter out all the cells in blood, you would be left with what golden-yellow liquid?
[ "plasma", "hemoglobin", "pus", "platelets" ]
A
If you were to filter out all the cells in blood, a golden-yellow liquid would be left behind. Plasma is this fluid part of the blood. Plasma is about 90% water and about 10% dissolved proteins, glucose, ions, hormones, and gases. Blood is made up mostly of plasma.
ARC-Challenge
arc_04_02936
The water cycle describes the continuous movement of the water of Earth. Which part of the water cycle is directly responsible for returning water to the soil?
[ "condensation", "evaporation", "precipitation", "transpiration" ]
C
null
openbookqa
obqa_02_04739
Dead organisms are the source of what for decomposers?
[ "nutriment", "pride", "oceans", "people" ]
A
dead organisms are the source of nutrients for decomposers
math_qa
mathqa_03_04515
solution a is 20 % salt and solution b is 80 % salt . if you have 30 ounces of solution a and 60 ounces of solution b , in what ratio could you mix solution a with solution b to produce 50 ounces of a 50 % salt solution ?
[ "6 : 4", "6 : 14", "4 : 4", "4 : 6" ]
C
"let : x = ounces taken from solution a ( 20 % salt ) y = ounces taken from solution b ( 80 % salt ) to prepare 50 ounce 50 % salt . first equation is simple : x + y = 50 to get another equation so as to be able to solve , compute salt contents . 20 % of x + 80 % of y = 50 % of 50 or x / 5 + 4 / 5 * y = 25 or x + 4 y =...
ARC-Easy
arc_04_00160
The digestive system breaks food into simple substances that the body can use. What system carries these simple substances from the digestive system to other parts of the body?
[ "circulatory", "nervous", "respiratory", "skeletal" ]
A
null
sciq
sciq_01_08109
What layer is below the lithosphere and in the upper mantle?
[ "troposphere", "hydrosphere", "magnetosphere", "asthenosphere" ]
D
Below the lithosphere is the asthenosphere . The asthenosphere is also in the upper mantle. This layer is solid, but it can flow and bend. A solid that can flow is like silly putty.
openbookqa
obqa_02_03707
If a day goes by and night falls surprisingly quickly
[ "it is likely freezing", "summer is just beginning", "the beaches are opening", "summer solstice is being celebrated" ]
A
the amount of daylight is least in the winter
sciq
sciq_01_02852
The temperature at which all molecular motion has ceased is called what?
[ "stopping point", "0 degrees kelvin", "absolute zero", "0 degrees celcius" ]
C
Making Connections: Absolute Zero What is absolute zero? Absolute zero is the temperature at which all molecular motion has ceased. The concept of absolute zero arises from the behavior of gases. Figure 13.9 shows how the pressure of gases at a constant volume decreases as temperature decreases. Various scientists have...
openbookqa
obqa_02_04075
Powdered substances such as oregano and pepper that are used to add flavor to foods come from
[ "beef", "petroleum", "cheese", "producers" ]
D
plants are the source of spices
sciq
sciq_01_00996
Protists, fungi, animals, and plants all consist of what kind of cells?
[ "eukaryotic", "enzymes", "parenchyma", "xylem" ]
A
math_qa
mathqa_03_01021
a man saves a certain portion of his income during a year and spends the remaining portion on his personal expenses . next year his income increases by 30 % but his savings increase by 100 % . if his total expenditure in 2 years is double his expenditure in 1 st year , what % age of his income in the first year did he ...
[ "21 %", "22.5 %", "25 %", "30 %" ]
D
"1 st year income = i 1 st year savings = s 1 st year expense = e 1 2 nd year income = 1.3 i 2 nd year savings = 2 s ( 100 % increase ) 2 nd year expense = e 2 e 1 + e 2 = 2 e 1 e 2 = e 1 that means expenses are same during both years . with increase of 30 % income the savings increased by 100 % . or s = . 3 i or s = 3...
sciq
sciq_01_10250
The neck of the uterus, called the cervix, opens into what?
[ "retina", "bladder", "testicle", "vagina" ]
D
math_qa
mathqa_03_00912
if a - b = 3 and a 2 + b 2 = 29 , then find the value of ab
[ "7", "8.5", "10", "12" ]
C
explanation : 2 ab = ( a 2 + b 2 ) − ( a − b ) 2 = > 2 ab = 29 - 9 = 20 = > ab = 10 option c
medmcqa
medmcqa_05_04174
The resting uretric pressure ?
[ "5-7 cm of Hp", "15-30 cm of Hp", "7-10 cm of Hp", "0-5 cm of 1-120" ]
D
Ans. is 'd' i.e. 0-5 cm of H20 "Baseline or resting ureteral pressure is approx. 0 to 5 cm 1120, and superimposed ureteral contraction ranging from 20 to 80 cm H20 occur two to six times per minute." - Cambell's Urology
ARC-Easy
arc_04_00828
Why does the leaf of a plant look green?
[ "Because it absorbs green light", "Because it reflects green light", "Because it absorbs only yellow and blue light", "Because it reflects a mixture of yellow and blue light" ]
B
null
openbookqa
obqa_02_04212
An exertion on a thing that is going against the thing's intended direction, when in motion will
[ "melt it", "oppose it", "speed it up", "burn it" ]
B
a force acting on an object in the opposite direction that the object is moving can cause that object 's speed to decrease in a forward motion
math_qa
mathqa_03_01736
a jogger running at 9 km / hr along side a railway track is 200 m ahead of the engine of a 200 m long train running at 45 km / hr in the same direction . in how much time will the train pass the jogger ?
[ "89", "20", "40", "88" ]
C
"speed of train relative to jogger = 45 - 9 = 36 km / hr . = 36 * 5 / 18 = 10 m / sec . distance to be covered = 200 + 200 = 360 m . time taken = 400 / 10 = 40 sec . answer : option c"
openbookqa
obqa_02_02187
A needle lined with magnets will pull north. If north is to the right and you want to go west, you'd walk
[ "straight", "left", "backwards", "right" ]
A
when the needle of a compass lines up with Earth 's magnetic poles , the needle points north
math_qa
mathqa_03_01365
a right circular cylinder has a height of 22 and a radius of 5 . a rectangular solid with a height of 15 and a square base , is placed in the cylinder such that each of the corners of the solid is tangent to the cylinder wall . liquid is then poured into the cylinder such that it reaches the rim . what is the volume of...
[ "500 ( π – 3", "500 ( π – 2.5", "500 ( π – 2", "550 ( π – 1.5" ]
D
[ quote = bunuel ] a right circular cylinder has a height of 20 and a radius of 5 . a rectangular solid with a height of 15 and a square base , is placed in the cylinder such that each of the corners of the solid is tangent to the cylinder wall . liquid is then poured into the cylinder such that it reaches the rim . wh...
openbookqa
obqa_02_03057
Candy disintegrates in
[ "sand", "a pool", "a dry bowl", "the fridge" ]
B
sugar dissolves in water when they are combined
sciq
sciq_01_08575
What is the first step of the calvin cycle called?
[ "carbon fixation", "breath fixation", "dioxide fixation", "carbon maturation" ]
A
The Calvin cycle has three major steps: carbon fixation, reduction, and regeneration. All three steps take place in the stroma of a chloroplast.
sciq
sciq_01_01610
The amount of energy needed to raise the temperature of one gram of liquid water by 1°c is also known as?
[ "mass", "specific heat", "Kelvin", "calorie" ]
B
State of matter that has a fixed volume and fixed shape.
sciq
sciq_01_11012
Gasoline, natural gas, fuel oil, diesel fuel, jet fuel, coal, kerosene, and propane are examples of what type of fule?
[ "electrolysis fuel", "polymerization fuel", "hydrocarbon fuel", "nuclear fue" ]
C
It is hard to overstate the importance of hydrocarbons to modern life. Hydrocarbons have even been called the “driving force of western civilization. ” You saw some ways they are used in the opening image. Several other ways are pictured in the Figure below . The most important use of hydrocarbons is for fuel. Gasoline...
medmcqa
medmcqa_05_00864
Type Ad curve is seen in -
[ "Eustachian tube obstruction", "After stapedectomy", "Middle ear tumours", "Secretory otitis media" ]
B
Ans. is 'b' i.e., After stapedectomy
sciq
sciq_01_04903
What is defined as the rate of energy transferred?
[ "power", "pressure", "charge", "capacity" ]
A
gravitational potential energy. Making Connections: Power Power is defined as the rate of energy transferred, or E / t . Fluid flow involves several types of power. Each type of power is identified with a specific type of energy being expended or changed in form.
medmcqa
medmcqa_05_01874
Two nuclei at the tail tip is seen in: September 2009
[ "Brugian malayi", "Wucheria bancrofti", "Onchocerca volvulus", "Mansonella ozzardi" ]
A
Ans. A: Brugian malayi B. Malayi microfilariae resemble W. bancrofti and Loa loa microfilariae with minor differences that can aid in laboratory diagnosis. B. Malayi microfilariae can be distinguished by the noncontinuous row of nuclei found in the tip of the tail. There are two terminal nuclei that are distinctly sepa...