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What are metals and good electrical conductors that tend to lose their valence electrons in chemical reactions called?
[ "conservants", "stable metals", "precious metals", "reductants" ]
D
Electronegativity Differences between Metals and Nonmetals An element’s electronegativity provides us with a single value that we can use to characterize the chemistry of an element. Elements with a high electronegativity (χ ≥ 2.2 in Figure 7.15 "Pauling Electronegativity Values of the ") have very negative affinities ...
SCiQ_train
What is the basic unit of an organism called?
[ "particle", "cell", "electron", "singularity" ]
B
While cells are the basic units of an organism, groups of cells can perform a job together. These cells are called specialized because they have a special job. Specialized cells can be organized into tissues . For example, your liver cells are organized into liver tissue. Your liver tissue is further organized into an ...
SCiQ_train
Which is a problem with using wind turbines to produce energy?
[ "Wind turbines are efficient only in certain areas.", "Wind turbines occupy a small area of land.", "Wind turbines produce a large amount of energy.", "Wind turbines create a large amount of pollution." ]
A
MMLU_train
What astronomical phenomenon is often comprised of remnants of the earliest material that formed in the solar system?
[ "meteorites", "asteroids", "particles", "comets" ]
A
Many meteorites are remnants of the earliest material that formed in the solar system.
SCiQ_train
Of the 200 candidates who were interviewed for a position at a call center, 100 had a two-wheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a two-wheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. Ho...
[ "4", "20", "10", "0" ]
C
Solution: Number of candidates who had none of the three = Total number of candidates - number of candidates who had at least one of three devices. Total number of candidates = 200. Number of candidates who had at least one of the three = A U B U C, where A is the set of those who have a two wheeler, B the set of those...
AquaRat_train
If both 7^2 and 3^4 are factors of the number a*4^3*6^2*13^11, then what is the smallest possible value of a?
[ "512", "256", "441", "343" ]
C
The number a must include at least 3^2*7^2 = 441 The answer is D.
AquaRat_train
What term refers to a change in species over time?
[ "mutation", "generation", "spontaneous change", "evolution" ]
D
Evolution can be described as a change in species over time . Dinosaur fossils are significant evidence of evolution and of past life on Earth.
SCiQ_train
What is in the inside of your mouth and nose instead of skin?
[ "gums", "cuticle layer", "mucous membranes", "scales" ]
C
The mouth and nose are not lined with skin. Instead, they are lined with mucous membranes . Other organs that are exposed to the outside world, including the lungs and stomach, are also lined with mucous membranes. Mucous membranes are not tough like skin, but they have other defenses.
SCiQ_train
"Developed and developing nations can learn from each other seeking a low-carbon economy. In terms of energy saving and green economy, China doesn't _ developed nations," said Zhou Changyi, director of the energy saving department of the Ministry of Industry and Information Technology. "While we can learn many aspects ...
[ "LCA is used to study the impact on a product.", "LCA is one of the exhibitions at this year's fair.", "LCA can help manufacturing industries decrease carbon release a lot.", "LCA advises industrial customers to focus on the initial investment." ]
C
MMLU_train
If x is a number such that x^2 + 5x - 6 = 0 and x^2 - 5x + 4 = 0, then x =
[ "4", "-1", "1", "6" ]
C
x^2 + 5x - 6 = (x+6)(x-1) = 0 Then x=-6 or x=1. x^2 - 5x + 4 = (x-4)(x-1) = 0 Then x=4 or x=1. Thus x=1. The answer is B.
AquaRat_train
In what type of diabetes can the pancreas still make insulin, but the cells of the body cannot use it efficiently?
[ "type A diabetes", "type 1 diabetes", "type 3 diabetes", "type 2 diabetes" ]
D
Type 2 diabetes occurs when body cells are no longer sensitive to insulin. The pancreas may still make insulin, but the cells of the body cannot use it efficiently. Being overweight and having high blood pressure increase the chances of developing type 2 diabetes. Type 2 diabetes usually develops in adulthood, but it i...
SCiQ_train
The entire volume of what is filtered through the kidneys about 300 times per day?
[ "urine", "saliva", "blood", "gastric juice" ]
C
25.5 Physiology of Urine Formation The entire volume of the blood is filtered through the kidneys about 300 times per day, and 99 percent of the water filtered is recovered. The GFR is influenced by hydrostatic pressure and colloid osmotic pressure. Under normal circumstances, hydrostatic pressure is significantly grea...
SCiQ_train
Name what nutrient cycling is strongly regulated by.
[ "vegetation", "elevation", "abundance", "sunlight" ]
A
SCiQ_train
Bacterial stis include chlamydia, gonorrhea, and syphilis are diseases that can usually be cured with what?
[ "antivirals", "antihistamines", "antibiotics", "antioxidants" ]
C
Bacterial STIs include chlamydia, gonorrhea, and syphilis. These diseases usually can be cured with antibiotics.
SCiQ_train
"If I had one million yuan, I would buy you a palace! Do I have one million yuan? No, I don't! so I only can spend ten fen on this short message, sending you my best wishes! " Today, SMS--Short Message Service is popular, and China Mobile says that every second, there are 410 messages being sent. Look around you! Peop...
[ "save much money.", "know the weather report.", "enjoy the happiness of SMS.", "have one million yuan." ]
C
MMLU_train
There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is:
[ "200", "80", "250", "100" ]
D
Explanation: Let the number of students in rooms A and B be x and y respectively. Then, x - 10 = y + 10 x - y = 20 .... (i) and x + 20 = 2(y - 20) x - 2y = -60 .... (ii) Solving (i) and (ii) we get: x = 100 , y = 80. The required answer A = 100. Answer: C
AquaRat_train
If two objects have the same charge then what will they do to eachother?
[ "repel attackers", "approach", "pull", "push away" ]
D
MMLU_train
prefix = st1 /Pennsylvania--When Connie Beck and her husband awoke to strange noises last weekend, they thought high winds were rattling their home. What they found was even more unexpected: A deer was taking a bubble bath in their bathtub. " _ ," Mrs. Beck said. "We were just waking up." The deer burst t...
[ "the deer was set free", "the deer destroyed the tub and the floor", "the officials made fun of the couple", "the officials discovered the deer was badly injured in the eye" ]
A
MMLU_train
A voltage source and a conductor are common to all what?
[ "cooling circuits", "thermometers", "magnets", "electric circuits" ]
D
All electric circuits have at least two parts: a voltage source and a conductor. They may have other parts as well, such as light bulbs and switches, as in the simple circuit seen in the Figure below . To see an animation of a circuit like this one, go to: http://www. rkm. com. au/animations/animation-electrical-circui...
SCiQ_train
Layers of placental transfer cells help transport nutrients to the embryos as they develop into what?
[ "kinesins", "keratinocytes", "sporophytes", "fibroblasts" ]
C
SCiQ_train
A bank issued credit card numbers and the corresponding PIN (Personal Identification Number). Both are 3-digit numbers up to 996. Pinaki was the last to get the credit card and so he had the last possible credit card number. He was afraid of forgetting his PIN. He wrote down the number 125 in his diary to remember his ...
[ "872", "876", "879", "875" ]
A
Explanation : Let, the PIN is x. According to the question, The card number =996 and Remainder =125. Thus, (996 × x)/997=125. =>x= 872. Answer : B
AquaRat_train
Which relationship involves inheritance of genetics?
[ "mother-daughter", "friend-friend", "teacher-student", "husband-wife" ]
A
MMLU_train
There are some vegetables in the garden and a big tree near the vegetables. They don't like each other, because vegetables drink much water, and the tree can't have enough water to live. He is very angry about that. So he wants to teach vegetables a lesson . On a very hot day, the big tree doesn't share its shadow wit...
[ "The big tree doesn't want to drink any water.", "The big tree always shares its shadow with vegetables.", "The big tree and vegetables start to share water with each other.", "The big tree thinks he is wrong at last." ]
D
MMLU_train
The addition of electron gives the halide ions the same electron configuration as what gas?
[ "an inert gas", "a flammable gas", "a noble gas", "a fatty gas" ]
C
The elements of the halogen group (Group 17) gain electrons most readily, as can be seen from their large negative electron affinities. This means that more energy is released in the formation of a halide ion than for the anions of any other elements. Considering electron configuration, it is easy to see why. The outer...
SCiQ_train
Distinct from a suspension, a solution is considered what type of mixture?
[ "homogeneous", "continuous", "gaseous", "heterogeneous" ]
A
As a child, you may have made suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water, known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible (or that can be seen with a magnifying glass). They are c...
SCiQ_train
What do you call aquatic biomes in the ocean?
[ "freshwater biomes", "marine biomes", "ocean dwellers", "coastal biomes" ]
B
Anglerfish live in the ocean. Aquatic biomes in the ocean are called marine biomes . Organisms that live in marine biomes must be adapted to the salt in the water. For example, many have organs for excreting excess salt. Two ocean zones are particularly challenging to marine organisms: the intertidal zone and the deep ...
SCiQ_train
A and B can do a work in 18 day, B and C in 30 days, A and C in 22 (1/2) days. In how many days can A,B and C individually do the work?
[ "60,90,120", "60,90,118", "60,90,128", "60,90,127" ]
A
(A+B+C)'s two days work = 1/18 + 1/30 + 2/45 = (5 + 3 + 4)/90 = 2/15 (A+B+C)'s one day work = 2/15 * 1/2 = 1/15 A's one day's work = 1/15 - 1/30 = 1/30 B's one day's work = 1/15 - 2/45 = 1/45 C's one day's work = 1/15 - 1/18= 1/90 So, A,B and C can individually do the work in 30, 45 and 90 days. Answer:B
AquaRat_train
A can do a piece of work in 80 days. He works at it for 10 days & then B alone finishes the remaining work in 42 days. In how much time will A and B, working together, finish the work?
[ "30days", "122days", "42days", "41days" ]
A
Work done by A in 10 days=10/80=1/8 Remaining work=(1-(1/8))=7/8 Now, work will be done by B in 42 days. Whole work will be done by B in (42*8/7)=48 days Therefore, A's one day's work=1/80 B’s one day's work=1/48 (A+B)'s one day's work=1/80+1/48=8/240=1/30 Hence, both will finish the work in 30 days. answer E 30days
AquaRat_train
In a hotel we can order two types of varieties, but we can make 5 more varieties in home. One can choose the four varieties with two from hotel as must. Find how many ways one can order.
[ "56", "29", "10", "28" ]
C
2c2*5c2=10ways ANSWER:B
AquaRat_train
If a bird is avoiding detection by a cat simply by sitting still, it probably is also utilizing
[ "eruptions", "merging with background", "flames", "blending paint" ]
B
MMLU_train
NOT all memories are sweet. Some people spend all their lives trying to forget bad experiences. Violence and traffic accidents can leave people with terrible physical and emotional scars. Often they relive these experiences in nightmares. Now American researchers think they are close to developing a pill, which will he...
[ "a new medical invention", "a new research on the pill", "a way of wiping out painful memories", "an argument about the research on the pill" ]
D
MMLU_train
By selling 50 meters of cloth. I gain the selling price of 15 meters. Find the gain percent?
[ "42 6/9%", "42 7/7%", "42 6/7%", "22 6/7%" ]
C
SP = CP + g 50 SP = 50 CP + 15 SP 35 SP = 50 CP 35 --- 15 CP gain 100 --- ? => 42 6/7% Answer: D
AquaRat_train
The area of one square is x^2 + 6x + 9 and the area of another square is 4x^2 − 28x + 49. If the sum of the perimeters of both squares is 56, what is the value of x?
[ "5", "7", "4", "6" ]
D
The areas are (x+3)^2 and (2x-7)^2. The lengths of the sides are x+3 and 2x-7. If we add the two perimeters: 4(x+3) + 4(2x-7) = 56 12x = 72 x = 6 The answer is D.
AquaRat_train
The total of 344 of 20 paise and 25 paise make a sum of Rs. 71. The no of 20 paise coins is
[ "278", "200", "300", "277" ]
C
Explanation: Let the number of 20 paise coins be x. Then the no of 25 paise coins = (344 - x). 0.20 * (x) + 0.25 (344 - x) = 71 => x = 300.. Answer: E) 300
AquaRat_train
At high pressures, how are the molecules of a gas crowded?
[ "small together", "closer together", "further apart", "few together" ]
B
Particles of a hypothetical ideal gas have no significant volume and do not attract or repel each other. In general, real gases approximate this behavior at relatively low pressures and high temperatures. However, at high pressures, the molecules of a gas are crowded closer together, and the amount of empty space betwe...
SCiQ_train
Two different primes may be said torhymearound an integer if they are the same distance from the integer on the number line. For instance, 3 and 7 rhyme around 5. What integer Q between 1 and 20, inclusive, has the greatest number of distinct rhyming primes around it?
[ "Q=15", "Q=12", "Q.18", "Q=17" ]
C
Since we are concerned with integers between 1 and 20, write down the primes till 40. 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37 (you should be very comfortable with the first few primes... ) 2, 3, 5, 7, 11,12, 13, 17, 19, 23, 29, 31, 37 - Three pairs (11,13), (7,17), (5, 19) 2, 3, 5, 7, 11, 13,15,17, 19, 23, 29, 31, 3...
AquaRat_train
DNA is the whole "map" of the human body. It is something that all human have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own. People have been trying to understand the human body for a long time. In 1860, Mr. Mendel discovered why we ...
[ "all the words in the DNA map", "small things called \"genes\" in our body", "the first \"word\" they could understand in that language", "those small parts are written in the DNA with a special language." ]
C
MMLU_train
Ice will form on small ponds when the temperature drops below 0°C. Which property of ice is most beneficial to fish living in these ponds?
[ "Ice has a temperature colder than the temperature of water.", "Ice absorbs sunlight that is reflected by water.", "Ice traps more pollution than is trapped by water.", "Ice had a density lower than the density of water." ]
D
MMLU_train
What is a layer of tissue that lies between the shell and the body?
[ "stem", "node", "mantle", "silt" ]
C
Two unique features of mollusks are the mantle and radula (see Figure above ). The mantle is a layer of tissue that lies between the shell and the body. It secretes calcium carbonate to form the shell. It forms a cavity, called the mantle cavity, between the mantle and the body. The mantle cavity pumps water for filter...
SCiQ_train
If the cp of 12 rubbers is equal to the sp of 8 rubbers, the gain %is ?
[ "70%", "30%", "50%", "80%" ]
C
(Explanation:Friends, we know we will need gain amount to get gain percent, right. So lets get gain first. Let the cost price of 1 pen is Re 1 Cost of 8 pens = Rs 8 Selling price of 8 pens = 12 Gain = 12 - 8 = 4 Gain%=(GainCost*100)%=(48*100)%=50% C
AquaRat_train
Jake and Carol live next door to a banana farm. One day as they were taking a walk, Jake asked Carol if she could smell the sweet bananas. Carol said yes and that she would love it if the farmer would give them some. Jake's mouth watered at the thought of eating the golden yellow bananas. They then began walking to the...
[ "It was scraped by a nail in the barn.", "He tripped on a rock and hurt it.", "He was bit by a dog on his way to school.", "He was stung by a bee." ]
B
MMLU_train
Three investors, A, B, and C, divide the profits from a business enterprise in the ratio of 5 : 7 : 8, respectively. If investor A earned $ 3,500, how much money did investors B and C earn in total?
[ "$10,500", "$9,500", "$4,000", "$4,900" ]
A
Let profit for A = 5x profit for B = 7x profit for C = 8x Investor A earned = 3500 5x = 3500 Total profit for B and C = 7x+ 8x = 15x Therefore , 15x = 5x * 3 = 3500 * 3 = 10,500 Answer E
AquaRat_train
The volume of blood each ventricle pumps per minute is called what?
[ "blood output", "trauma output", "cardiac output", "brain output" ]
C
SCiQ_train
Wearing seat belt is,of course,the first step to safe driving.These additional measures might also save your life. Count to three.Keeping up enough space between your car and others is extreme1y necessary.Jim Clark,a California driving instructor,suggests a least amount of three seconds'following distance.To figure thi...
[ "we'd better find somewhere to go", "it will be better for us to drive in the outside lanes", "it is safer to drive in the middle", "we must drive on the left" ]
B
MMLU_train
The unit digit in the product (624 * 708 * 913 * 463) is:
[ "2", "8", "6", "1" ]
B
Explanation: Unit digit in the given product = Unit Digit in (4*8*3*3) = 8 ANSWER: D
AquaRat_train
The largest outbreak of the deadly disease Ebola was caused by an infected bat biting a toddler, say a group of international researchers. The 17-strong team of European and African tropical disease researchers, ecologists and anthropologists have spent three weeks investigating the outbreak of the disease in Guinea, ...
[ "A toddler was bitten by a bat and died.", "The disease Ebola is incurable at present.", "An infected bat caused the outbreak of Ebola.", "The deadly disease Ebola broke out in Guinea." ]
C
MMLU_train
Whatever our differences as human beings are we all think we're more like the rest of the animal world than we realize. It is said that we share 40 per cent of our genetic structure with the simple worm. But that fact has helped Sir John Sulston win the 2002 Nobel Prize for Medicine. Sir John is the founder of the Sang...
[ "grow without being instructed", "die regularly", "fail to follow people's instructions", "develop in the human body" ]
A
MMLU_train
Many transition metals and their compounds are used as what?
[ "bases", "insulators", "catalysts", "sealants" ]
C
Many transition metals and their compounds are used as catalysts. Given MnO 2, FeCl3, Pt, and Ni, which would you select for each purpose and why?.
SCiQ_train
About how many days does it take the moon to make one orbit around the earth?
[ "30", "21", "28", "22" ]
C
The Moon does not produce any light of its own. It only reflects light from the Sun. The Moon has phases because it orbits around Earth. One orbit takes about 28 days. As the moon moves around Earth, different parts of it appear to be lit up by the Sun. The Moon sometimes appears fully lit and sometimes completely dark...
SCiQ_train
In plants, pigment molecules absorb only visible light for photosynthesis. the visible light seen by humans as white light actually exists in a what?
[ "rainbow of colors", "invisible spectrum", "vacuum", "transparency" ]
A
Absorption of Light Light energy enters the process of photosynthesis when pigments absorb the light. In plants, pigment molecules absorb only visible light for photosynthesis. The visible light seen by humans as white light actually exists in a rainbow of colors. Certain objects, such as a prism or a drop of water, di...
SCiQ_train
If rupee one produces rupees nine over a period of 45 years, find the rate of simple interest?
[ "22 1/2 %", "22 1/8 %", "22 1/7 %", "20 %" ]
D
9 = (1*45*R)/100 R = 20 % Answer:D
AquaRat_train
Which of the following allows the planets to stay in orbit?
[ "the Moon's gravity", "the Sun's gravity", "magnetism", "rotation" ]
B
MMLU_train
Which of these indicates a physical change that occurs during the process of digestion?
[ "the addition of acids to create a ball of food", "the secretion of pepsin to change proteins to peptides", "the breakdown of food substances by digestive juices", "the squeezing of food through the intestines" ]
D
MMLU_train
What is damaged in the inner ear by loud sounds that cause hearing loss?
[ "tympanic membrane", "hair cells", "hammer and anvil", "ear drum" ]
B
Loud sounds can cause hearing loss by damaging hair cells in the inner ear. The louder the sounds are, the less exposure is needed to cause hearing loss.
SCiQ_train
Did you get a flu shot this year?For the first time,the Centers for Disease Control and Prevention in the US is recommending that all children aged from 6 months to 18 years receive the flu _ . Vaccines battle diseases caused by bacteria and viruses.A weakened form of the germ is introduced into the body.The body mak...
[ "is as effective as the polio and the measles vaccines", "is worse,compared with the polio and the measles vaccines", "does help to make illness less serious", "is quite good because it works for everyone" ]
C
MMLU_train
Rita bought 105 items from the market, and each item is either glass, cup, or spoon. If she ownsbought 5 more cups than glasses, and twice as many cups as glasses, how many glasses Rita did buy ?
[ "20", "25", "30", "40" ]
B
x = the number of glasses y = the number of cups z = the number of spoons From the first sentence we have Equation #1: x + y + z = 105 ...she bought 5 more spoons than glasses... Equation #2: z = 5 + x ...twice as many cups as glasses... Equation #3: y = 2x Now, we can replace y with x in Equation #1 x + 2x + z = 105 E...
AquaRat_train
Warm weather organisms live in what kind of climates?
[ "icey", "summerlike", "frosty", "frigid" ]
B
MMLU_train
in base 7, a number is written only using digits 0,1,2,3,4,5,6. the number 135 in base 7 is 1*72+3*7+5=75 in base 10. what is the sum of the base 7 numbers 1234 & 6543 in base 7?
[ "11011", "11010", "10111", "11110" ]
D
4+3=7 since base is 7 so it will become 0 giving 1 carry to next digits(so 4+7=0) 3+4 + 1 carry from above step= 1 and 1 carry to next digit 2+5 + 1 carry to next digit= 1 and 1 carry 1+6= 11 so ans=11110 ANSWER:B
AquaRat_train
A salesman sold twice as much pears in the afternoon than in the morning. If he sold $360 kilograms of pears that day, how many kilograms did he sell in the morning and how many in the afternoon?
[ "180", "320", "120", "240" ]
D
Let x be the number of kilograms he sold in the morning.Then in the afternoon he sold 2x kilograms. So, the total is x+2x=3x. This must be equal to 360. 3x=360 x=3603 x=120 Therefore, the salesman sold 120 kg in the morning and 2⋅120=240 kg in the afternoon. So answer is C.
AquaRat_train
45 pupil,out of them 12 in debate only and 22 in singing only.then how many in both?
[ "11", "13", "12", "10" ]
A
The intersection for two = 45 - 12 - 22 = 11 play both games. ANSWER:C
AquaRat_train
The average (arithmetic mean) of four numbers is 5x + 6. If one of the numbers is 2x, what is the average of the other three numbers?
[ "3x + 3", "x + 1", "5x + 1", "6x + 8" ]
D
The sum of all four numbers is 4 * (5x + 6) = 20x + 24. If one of the numbers is 2x, the sum of the other 3 numbers is 18x+24. The average of the remaining three numbers is (18x+24)/3 = 6x+8. The answer is E.
AquaRat_train
Ramesh can finish a work in 15 days and Sushil in 25 days. They both work together for 5 days and then Sushil goes away. In how many days will Ramesh complete the remaining work?
[ "4 days", "5 days", "7 days", "6 days" ]
C
(5 + x)/15 + 5/25 = 1 => x =7 days ANSWER:B
AquaRat_train
haresh went to buy fruits.she bought 1 apple , 3 bananas , 5 oranges and paid 21 rupees.another person bought 7 apple ,5 bananas , 3 oranges and paid 51 rupees.if i want to buy 1 apple, 1 banana , 1 orange then how much i have to pay?
[ "8", "9", "7", "11" ]
B
There can be multiple possible rates of apple, banana and orange to satisfy given conditions, But cost of 1 apple, 1 banana , 1 orange will be Rs 9. 1x+3y+5z = 21........(1) 7x+5y+3z = 51........(2) Adding (1) and (2), we get 8x+8y+8z = 72 8*(x+y+z)=72 x+y+z=9 ANSWER:B
AquaRat_train
Which is activity is least likely to be inherited?
[ "how to taste food", "how to hear sound", "how to breathe oxygen", "how to cook pasta" ]
D
MMLU_train
If 8 workers can build 8 cars in 8 days, then how many days would it take 5 workers to build 5 cars?
[ "12", "10", "5", "8" ]
D
8 workers can build 1 car per day on average. 1 worker can build 1/8 of a car per day. 5 workers can build 5/8 car per day. The time required to build 5 cars is 5 / (5/8) = 8 days The answer is C.
AquaRat_train
The flying fox is not a fox at all. It is an extra large bat that has got a fox's head, and that feeds on fruit. Like all bats, flying foxes hang themselves by their toes when at rest, and travel in great crowds when out flying. A group will live in one place for years. Sometimes several hundreds of them occupy a sin...
[ "double their number every year", "fight and kill a lot of themselves", "move from place to place very often", "lose a lot of their young" ]
D
MMLU_train
What layer is below the lithosphere and in the upper mantle?
[ "magnetosphere", "asthenosphere", "hydrosphere", "troposphere" ]
B
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.
SCiQ_train
NASA is moving ahead with plans to put a long-armed Lander on Mars' icy North Pole to search for clues for water and possible signs of life. The $386 million Phoenix Mars is planned to touch down in the Martian arctic in 2008. The stationary probe will use its robotic arm to dig into the icy land and pick up soil sampl...
[ "clues of water will be found in Phoenix", "Phoenix will be sent to find clues of water on Mars", "August 2007 will see Phoenix lift off", "the Mars Scout program will be carried out" ]
B
MMLU_train
n a series of numbers , the next number is formed by adding 1 to the sum of the previous numbers, and the 10th number is 1280. Then what is the first number in the series? (series will be like this x , x+1, (x+(x+1))+1,....... )
[ "9", "4", "5", "7" ]
B
Answer: Option B Sol. The given series is x, x + 1, 2x + 2, 4x + 4 ...... If you observe the pattern here, the coefficient of x + 1 is in the powers of 2. So 4th term has a power of 2, 5th term has a power of 3... 10th term has a power of 8. So tenth term would be 2828(x + 1) = 256(x+1). Given 256(x+1) = 1280 x = 4. An...
AquaRat_train
A class with tens or even hundreds of thousands of students might sound like a teacher's bad dream. But a big idea in higher education these days is the massive open online course, or MOOC. Some universities offer free, non-credit MOOCs available to anyone in the world. Others charge for courses and provide credits. Th...
[ "Enjoy online education, which is more popular", "Join Udacity, which supports free online courses.", "Take an online course to study computer.", "Get a free education in huge online classes." ]
D
MMLU_train
Two cars cover the same distance at the speed of 60 and 64 kmps respectively. Find the distance traveled by them if the slower car takes 1 hour more than the faster car.
[ "900", "280", "960", "906" ]
C
Explanation: Distance= speed * Time 60(x + 1) = 64x X = 15 60 * 16 = 960 km Answer: C
AquaRat_train
Which of these characteristics best helps scientists classify organisms?
[ "size", "color", "gender", "structure" ]
D
MMLU_train
The area of playground is 5700 sq. meters. What will be the cost of covering it with grass sheet 1cm deep, if cost of grass sheet is $2.80 per cubic meter.
[ "a) $144", "c) $159.6", "b) $150.50", "e) $160.70" ]
B
total volume * unit cost = total cost or, 5700 * 0.01 * 2.8 = total cost = 159.6=C
AquaRat_train
The inside surface of the jejunum is covered with tiny projections called what?
[ "mucosa", "alveoli", "flagella", "villi" ]
D
The jejunum is the second part of the small intestine. This is where most nutrients are absorbed into the blood. The inside surface of the jejunum is covered with tiny projections called villi (villus, singular). The villi make the inner surface of the small intestine 1000 times greater than it would be without them. Y...
SCiQ_train
Endothermic and exothermic reactions differ in whether the products or reactants store more of what?
[ "Kinetic Energy", "chemical energy", "Motion energy", "Thermal energy" ]
B
A: The energy is stored in the bonds of the products as chemical energy. In an endothermic reaction, the products have more stored chemical energy than the reactants. This is represented by the graph on the left in the Figure below . In an exothermic reaction, the opposite is true. The products have less stored chemica...
SCiQ_train
Which plants sometimes colonize areas by disrupting interactions between native organisms?
[ "carnivorous exotic plants", "invasive exotic plants", "bacteria exotic plants", "denser exotic plants" ]
B
SCiQ_train
What is the base of nearly all food chains on earth?
[ "atherosclerosis", "glycolysis", "photosynthesis", "synthesis" ]
C
Photosynthesis is the base of nearly all food chains on Earth. This is true of marine food chains, too.
SCiQ_train
Fertilizer runoff can create what type of zones in the ocean?
[ "hot zones", "fresh zones", "dead zones", "barren zones" ]
C
Fertilizer runoff can create dead zones in the ocean.
SCiQ_train
What always continues in a red supergiant?
[ "heat", "movement", "fission", "fusion" ]
D
In a red supergiant, fusion does not stop. Lighter atoms fuse into heavier atoms. Eventually iron atoms form. When there is nothing left to fuse, the star’s iron core explodes violently. This is called a supernova explosion. The incredible energy released fuses heavy atoms together. Gold, silver, uranium and the other ...
SCiQ_train
Arithmetic mean and standard deviation of a certain normal distribution are 11.5 and 1.5. What value is exactly 2 standard deviations less than the mean?
[ "8.5", "11.5", "11", "12" ]
A
The value which is exactly two SD below the mean is: mean-2*SD=11.5-2*1.5=8.5. Answer: E.
AquaRat_train
Both diffusion and effusion are related to the speed at which what objects move?
[ "gas molecules", "solids", "copper molecules", "electricity" ]
A
A related process to diffusion is the effusion. Effusion is the process of a confined gas escaping through a tiny hole in its container. Effusion can be observed by the fact that a helium-filled balloon will stop floating and sink to the floor after a day or so. This is because the helium gas effuses through tiny pores...
SCiQ_train
If a - b =6 and a2+b2=48 , find the value of ab.
[ "6", "2", "12", "8" ]
B
Explanation: We know 2ab=(a2+b2)−(a−b)2 2ab=48−36=12 =>ab=6 Option E
AquaRat_train
The average (arithmetic mean) of eight numbers is 41.5. If the sum of half of these numbers is 154.4, what is the average of the other half?
[ "41.1", "44.4", "39.9", "56.6" ]
B
The average of this half is 154.4/4 = 38.6 This is 2.9 below the overall average, thus the average of the other half of the numbers must be 2.9 above the overall age, that is 41.5+2.9 = 44.4 The answer is C.
AquaRat_train
While working alone at their constant rates, computer X can process 240 files in 12 hours, and computer Y can process 240 files in 6 hours. If all files processed by these computers are the same size, how many hours would it take the two computers, working at the same time at their respective constant rates, to process...
[ "5", "3.5", "4", "3" ]
C
Both computers together process files at a rate of 240/12 + 240/6 = 20+40 = 60 files per hour. The time required to process 240 files is 240/60 = 4 hours The answer is C.
AquaRat_train
Adding two non multiples of Q always results in a multiple of Q; which of the following must be the value of Q ?
[ "[C] five", "[A] two", "[E] hundred", "[D] ten" ]
B
NON- multiples of 2 would always be ODD and sum of two odd would be EVEN. so irrespective of value of non-multiples, sum of two them would always be even and thus multiple of 2.. A
AquaRat_train
An auto assembly plant performs six functions with each frame that arrives: add axles, add wheels to the axles, install the windshield to the frame, install the instrument panel, install the steering wheel, and install the interior seating. Once those six tasks are performed, each car goes to a separate building for fi...
[ "720", "120", "480", "360" ]
D
C) 360 short way: there are 6C! ways to do the six tasks. Half will have wheels before axles and half will have axles before wheels. So we want Y=6C!/2 -> 720/2 = 360
AquaRat_train
If a^2 is divisible by 240 what is the least possible value of integer a?
[ "90", "12", "60", "30" ]
C
240 can be written as (2^4)*3*5. For a^2 to be divisible by 240 it should contain at least 2^4 and 3 and 5 in its factors. We can leave out option E because 12 doesnt have 5 as one of its factor. Now if we check for option B, 30 can be written as 2*3*5, hence 30^ 2 will have 2 as the maximum power of 2, so we can leave...
AquaRat_train
What is required for communication?
[ "lack and reception of signals", "transmission and weight of signals", "transmission and reception of signals", "weight and reception of signals" ]
C
SCiQ_train
What term is used to describe a bond formed by the overlap of orbitals in an end-to-end fashion, with the electron density concentrated between the nuclei of the bonding atoms?
[ "beta bond", "sigma bond", "rna bond", "lattice bond" ]
B
It is necessary to distinguish between the two types of covalent bonds in a C 2 H 4 molecule. A sigma bond (σ bond) is a bond formed by the overlap of orbitals in an end-to-end fashion, with the electron density concentrated between the nuclei of the bonding atoms. A pi bond (π bond) is a bond formed by the overlap of ...
SCiQ_train
What is the name of the first leaf developed inside an embryo?
[ "gastromyzon", "exon", "cotyledon", "polylepis" ]
C
The embryo develops from a fertilized egg. While still inside the seed, the embryo forms its first leaf (cotyledon) and starts to develop a stem (hypocotyl) and root (radicle).
SCiQ_train
What type of light can mosquitoes see?
[ "infared", "trichina", "spicule", "neon" ]
A
A: Some animals can see light in the infrared or ultraviolet range of wavelengths. For example, mosquitoes can see infrared light, which is emitted by warm objects. By seeing infrared light, mosquitoes can tell where the warmest, blood-rich areas of the body are located.
SCiQ_train
Whose woods these are I think I know. His house is in the village, though; He will not see me stopping here To watch his woods fill up with snow. My little horse must think it queer To stop without a farmhouse near Between the woods and frozen lake The darkest evening of the year. He gives his harness bells a shake To ...
[ "windy", "frozen", "snowy", "cloudy" ]
D
MMLU_train
Male peacocks have large brightly colored tail feathers. What is the most likely reason for this?
[ "to attract potential mates", "to distract potential predators", "to help catch food", "to preserve warmth" ]
A
MMLU_train
How many 1/3 pound paperback books together weigh 25 pounds?
[ "35", "60", "75", "50" ]
C
Explanation: If each book weighs 1/3 pound, then 1 pound = 3 books. We can set up a proportion to solve: 1 pound / 3 books = 25 pounds / x books. Now cross-multiply: (1)(x) = (3)(25) X = 75 Answer :(D)
AquaRat_train
Hello! My name's Mary Brown. I'm a girl. I like red. I have a red schoolbag. What's this? It's my red pencil box. Is that my ruler? Yes, it is. It is a red ruler. What's that? It is a watch. Is it my watch? No, it isn't. It's Bob's watch. It's blue. That is _ watch.
[ "my", "your", "Bob's", "Mary's" ]
C
MMLU_train
John is a paper boy. He delivers newspapers to different houses in his street every day. He has about 80 customers . Half of his customers only take the newspapers on weekdays, and about half take the newspapers on weekdays and on Sundays. Two of John's customers only take the newspapers on Sundays. John has to get up ...
[ "3:30", "4:30", "5:30", "6:30" ]
B
MMLU_train
Driving speeds have largely stabilized, and nowadays, safety concerns are important and reducing road accidents to minimum is a must. So, automakers are focused on safety systems more than ever before. Given the emphasis on improving safety, it's possible that well-known phrases such as "live fast and die young" may l...
[ "detect possible dangerous crossroads", "compute the movement of the contacting vehicles", "brake the car automatically in as little time as possible", "detect potential contacts between vehicles in advance" ]
D
MMLU_train
If D is the least common multiple of 90,196, and 300, which of the following is NOT a factor of D?
[ "900", "700", "2,100", "600" ]
D
IF D is the least common multiple of 90,196 and 300, which of the following is NOT a factor of D? A- 600 B- 700 C- 900 D- 2100 E- 4900 90 = 2 * 3 * 3 * 5 196 = 2 * 2 * 7 * 7 300 = 2 * 2 * 3 * 5 * 5 LCM = 2 * 2 * 3 * 3 * 5 * 5 * 7 * 7 (TWO 2, TWO 3, TWO 5, TWO 7) 600 = 2 * 2 * 2 * 3 * 5 * 5 700 = 2 * 2 * 5 * 5 * 7 900 =...
AquaRat_train
In a 100m race, Sam beats John by 5 seconds. On the contrary, if Sam allowed John to start 15m ahead of Sam, then Sam and John reach the finishing point at the same time. How long does Sam take to run the 100m race?
[ "4 seconds", "25 seconds", "21 seconds", "17 seconds" ]
D
Their difference is 5 second but this difference is 0 if john allows Sam to start the race from 15m ahead . that means Jhon was 15m away from finishing line when they started together . so He will cover 15 m in 5 seconds . so his speed =15/5=3 metre / second . so time taken =100/5=20 seconds . so Sam took = 17 seconds ...
AquaRat_train
The average age of 6 boys is 25 years and their ages are in the proportion 3:5:7. The age of the youngest boy is?
[ "20years", "10years", "30years", "25years" ]
C
Total age of 6 boys = 25*6 = 150 ratio of their ages = 3:5:7 Age of the youngest = 150*3/15 = 30 years Answer is E
AquaRat_train