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What is the ability to be attracted by a magnet and to act as a magnet?
[ "magnetism", "inertia", "polarization", "electrical attraction" ]
A
Magnetism is the ability to be attracted by a magnet and to act as a magnet. Only ferromagnetic materials have this property. They include iron, cobalt, and nickel. When these materials are magnetized, they become temporary or permanent magnets. Magnetite is a natural permanent magnet.
SCiQ_train
Some power plants release heated water into rivers. This practice adds thermal energy to the river that most likely
[ "increases the amount of nutrients in the river.", "provides a better environment for native organisms to grow.", "keeps the river at balance with nature.", "threatens the existence of aquatic organisms." ]
D
MMLU_train
A water tank is two-fifth full. Pipe A can fill a tank in 10 minutes and pipe B can empty it in 8 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely?
[ "6 min. to full", "8 min. to full", "16 min. to empty", "9 min. to empty" ]
C
Clearly, pipe B is faster than pipe A and so, the tank will be emptied. Part to be emptied = 2/5 Part emptied by (A + B) in 1 minute = (1/8 - 1/10) = 1/40 1/40 : 2/5 :: 1 : x x = (2/5 * 1 * 40) = 16 min. So, the tank will be emptied in 16 min. ANSWER:A
AquaRat_train
Category : prefix = st1 /Tours/ Guides Ad Number:508 Date Posted: 27/05/2006 Price:$1297 for 7 days Expires On: 03/12/2007 Description Subscribe to FREE Focus e - newsletter online. Focus on Mexicowebsite provides FREE comprehensive information about living, retiring, working or investing inL...
[ "One.", "Two.", "Three.", "Four." ]
C
MMLU_train
When a balloon is rubbed against hair, they attract each other because of a difference in what?
[ "actions", "Force", "charges", "Friction" ]
C
Did you ever rub an inflated balloon against your hair? You can see what happens in Figure below . Friction between the rubber of the balloon and the baby’s hair results in electrons from the hair "rubbing off" onto the balloon. That’s because rubber attracts electrons more strongly than hair does. After the transfer o...
SCiQ_train
The short length of what in women is the best explanation for the greater incidence of uti in women?
[ "urethra", "vagina", "uterus", "fallopian tube" ]
A
Female Urethra The external urethral orifice is embedded in the anterior vaginal wall inferior to the clitoris, superior to the vaginal opening (introitus), and medial to the labia minora. Its short length, about 4 cm, is less of a barrier to fecal bacteria than the longer male urethra and the best explanation for the ...
SCiQ_train
What does an electric field surround?
[ "negative particle", "neutral particles", "a charged particle", "charged ions" ]
C
An electric field is a space surrounding a charged particle where the particle exerts electric force.
SCiQ_train
There are 84 supermarkets in the FGH chain. All of them are either in the US or Canada. If there are 14 more FGH supermarkets in the US than in Canada, how many FGH supermarkets are there in the US?
[ "49", "31", "20", "64" ]
A
x + (x - 14) = 84 --> x = 49. Answer: D.
AquaRat_train
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
[ "50/90", "24/81", "83/96", "21/46" ]
D
Let S be the sample space and E be the event of selecting 1 girl and 2 boys. Then, n(S) = Number ways of selecting 3 students out of 25 = 25C3 ` =(25 x 24 x 23) (3 x 2 x 1) = 2300. n(E) = (10C1 x 15C2) =[10 x(15 x 14)/(2 x 1)] = 1050. P(E) = n(E)/n(S) = 1050/2300 = 21/46. Answer:A
AquaRat_train
Given a circular wheel of 3.62 m radius how many revolutions will the will make to travel a distance of 1 km?
[ "22753.2", "22254.2", "22254.2", "22754.3" ]
D
2 * 22/7 * 3.62 * x = 22754.3 x = 1000 Answer: A
AquaRat_train
What kind of resource is soil?
[ "viable", "finite", "renewable", "nonrenewable" ]
C
Soil is a renewable resource. Sometimes it is lost faster than it can be replaced.
SCiQ_train
Running Running is good for people with too much fat because it can help them become slim. It also makes people strong. But it may be bad for joints . If we don't feel comfortable in our joints, we should stop for another activity. Walking Walking makes our bodies relaxed . It can also help people to be slim. Swimmin...
[ "Four outdoor activities.", "Four ways of travelling.", "Four reasons why we need sports.", "Four good things of sports." ]
A
MMLU_train
Pairs of fish that do not practice broadcast what may exhibit courtship behavior?
[ "spawning", "migration", "inheritance", "feeding" ]
A
Vinegar is primarily an aqueous solution of acetic acid. Commercial vinegar typically contains 5.0 g of acetic acid in 95.0 g of water. What is the concentration of commercial vinegar? If only 3.1% of the acetic acid −.
SCiQ_train
Once upon a time there were three rabbits, named Winston, Chester, and Francis. Chester was a brown rabbit with large eyes. Francis was grey and white and had messy fur. Winston was black and very fat. They were very happy rabbits who loved to eat. Every day they would leave their home, cross a road, and go through a s...
[ "Carrots", "A flower", "Mushrooms", "Dirt" ]
A
MMLU_train
In a group of 25 factory workers, 13 have brown eyes. Six of the women do not have brown eyes. How many of the 11 men have brown eyes.
[ "5", "10", "8", "9" ]
A
Total number of worker (M+W): 25 No. of men (M): 11 (Inferred fromHow many of the 11 men) No. of women (W): 14 Total no. of workers who have brown eyes (B): 13 No. of women who do not have brown eyes: 6 Therefore, no. of women who have brown eyes: W - 6 = 14 - 6 = 8 Remaining 5 are men. (B - 8= 13 - 8= 5) So 5 out of 1...
AquaRat_train
E-book is short for electronic( ) book. It is usually read on personal computers. Some mobile phones can also be used to read e-books. Earlier e-books were written for a specific group of readers and were about only a few subjects. With the development of the internet, knowledge and answers to a lot of questions mainly...
[ "Three", "Four", "Five", "Six" ]
B
MMLU_train
A car travells the first 1/3 of certain distance with a speed of 7km/hr the next 1/2 distance witha a speed of 12 km/hr, and the last 1/4 distance with a speed of 16 km/hr. the average speed of the carfor the whole journey is?
[ "56.89km/hr", "7.96km/hr", "8.96km/hr", "9.53km/hr" ]
D
Let the whole distance travelled be x km and the average speed of the car for he whole journey be y km/hr then (x/3)/7+(x/2)/12+(x/4)/16=x/y x/21+x/24+x/64=x/y y=9.53km/hr Answer(A)
AquaRat_train
Josh spends a total of $5.5 buying P items in the convenience store. If each of the items is either a 5 cents single bubblegum, or a 50 cents bubblegum pack, then may be which of the following?
[ "100", "101", "112", "99" ]
B
P items in the convenience store$5.5 = 550 cents 550 = 50a + 5b =>110 = 10a + b b = 110 - 10a = 10(11-a) Hence b is even and multiple of 10. Possible values of b: b = 10,20,30,40,50,60,70,80,90,100 a = 11,9,8,7,6,5,4,3,2,1 The total (a+b) is 21,29,38,47,56,65,74,83,92,101 The only option is 101. Hence C.
AquaRat_train
Jim is now twice as old as Fred, who is two years older than Sam. Seven years ago, Jim was three times as old as Sam. How old is Jim now?
[ "20", "18", "32", "40" ]
D
J = 2F = 2(S+2) = 2S+4 J-7 = 3*(S-7) (2S+4)-7 = 3S-21 S = 18 and so J = 40 The answer is E.
AquaRat_train
You've bought what you need. The grocery cashier asks, "Will that be paper or plastic? You reply "Plastic, please." This seems like a simple question and there are plenty of reasons we choose plastic: easier to carry, lighter than paper bags, possibly less damaging to the environment, less expensive to the shop owners,...
[ "Excited", "Serious", "Ironical", "Casual" ]
C
MMLU_train
In mammals, four specialized types of what serve to cut, tear, and grind food?
[ "plates", "teeth", "scales", "spines" ]
B
Mammalian teeth are also important for digestion. The four types of teeth are specialized for different feeding functions, as shown in Figure below . Together, the four types of teeth can cut, tear, and grind food. This makes food easier and quicker to digest.
SCiQ_train
To replenish the shade in a city that had been provided by trees that were felled by a storm, you must
[ "grow gills and live on a raft", "use a large lawn mower", "introduce replacement timber producers", "get out your weed whacker" ]
C
MMLU_train
A recent survey in the United States showed that the average family spent more money on its pets than on its children. Although rather shocking, it should not surprise anyone who has seen the doggy parlors where loved pets rest. Are Americans unique in treating their little friends in this way? No, the English, too, p...
[ "Pet.", "Food.", "Medicine.", "Sports." ]
C
MMLU_train
Rat snakes, Elaphe obsoleta, are a species made of many distinct populations in different areas. Each of the populations has different markings and colorings. Where would rat snakes most likely be gray?
[ "in a forest", "in a swamp", "in a gravel pit", "in a corn field" ]
C
MMLU_train
a, b, c, and d are positive consecutive odd integers and a < b < c < d. If you take away the last number from the square of the first number, you get a number that is three more than the sum of the last three numbers. What is the product of ac?
[ "18", "35", "77", "39" ]
C
aa - d = b + c + d + 3 Simplify: aa = b + c + 2d + 3 We know that aa is the square of an odd number. Here are some possibilities: 3x3 = 9, 5x5 = 25, 7x7 = 49, 9x9 = 81, 11x11 = 121. We want to find a sequence where the following odd numbers are very close to the square. The sequence 11, 13, 15, 17 won't work because 12...
AquaRat_train
What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes?
[ "cooling era", "ice age", "freezing point", "cold age" ]
B
But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to lower latitudes. Scientists think that ice ages occurred at least six times over the last billion years alone. How do scientists learn about Earth’s past climates?.
SCiQ_train
The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is?
[ "2:3", "2:1", "2:7", "2:9" ]
A
Let the ratio be k : 1. Then, k * 16.4 + 1 * 15.4 = (k + 1) * 15.8 = (16.4 - 15.8)k = (15.8 - 15.4) = k = 0.4/0.6 = 2/3 Required ratio = 2/3 : 1 = 2:3. Answer: Option B Explanation: Let the ratio be k : 1. Then, k * 16.4 + 1 * 15.4 = (k + 1) * 15.8 = (16.4 - 15.8)k = (15.8 - 15.4) = k = 0.4/0.6 = 2/3 Required ratio = 2...
AquaRat_train
Beijing ?(13, July) China sent up a new data relays atellite , Tianlian I -02, on Monday at the Xichang Satellite Launch Centre in South-western Sichuan province.The new satellite will promote the country's satellite communication network for space docking . The satellite was launched on a Long-March-SC carrier rocke...
[ "To test the function of a Long-March-SC carrier rocket.", "To carry some astronauts into space to do some research.", "To send more information and clearer pictures to mobile phones on the earth.", "To promote the country's satellite communication network for space docking'" ]
D
MMLU_train
The cost of cultivating a square field at the rate of Rs.135 per hectare is Rs.1215. The cost of putting a fence around it at the rate of 75 paise per meter would be :
[ "Rs.900", "Rs.360", "Rs.810", "Rs.1900" ]
A
Area= Total cost/ Rate= (1215/135) hectares= (9*10000) sq.m. Therefore, side of the square= Ö90000=300m. Perimeter of the field= (300*4)m= 1200m Cost of fencing= Rs.(1200*3/4)= Rs.900 ANSWER:C
AquaRat_train
Mr Smith made many tests with different animals and the monkey was the cleverest of all the animals. One day Mr Smith put a monkey in a room. He also put some small boxes in it. In one of the boxes there was some food. "How long will it take the monkey to find the food? " Mr Smith said to himself. " Let me wait and s...
[ "some", "none", "one", "each" ]
C
MMLU_train
What distance will be covered by a bus moving at 72 kmph in 30 seconds?
[ "800 m", "400 m", "600 m", "500 m" ]
C
D 600 m 72 kmph = 72 * 5/18 = 20 mps D = Speed * time = 20 * 30 = 600 m.
AquaRat_train
What are the three types of rocks?
[ "igneous, sedimentary, metamorphic", "opaque , sedimentary , metamorphic", "igneous, orbital, metamorphic", "igneous, sedimentary, mixed" ]
A
You learned about the three rock types: igneous, sedimentary, and metamorphic. You also learned that all of these rocks can change. In fact, any rock can change to become any other type of rock. These changes usually happen very slowly. Some changes happen below Earth’s surface. Some changes happen above ground. These ...
SCiQ_train
For any a and b that satisfy |a – b| = b – a and a > 0, then |a + 2| + |-b| + |b – a| + |ab| =
[ "ab + 2b + 2", "-ab + 3", "ab + 2b – 2a – 3", "-ab + 2b + 3" ]
A
Observation-1: |a – b| = b – a which is possible only when signs of a and b are Same Since Given a > 0 so we figure out that a and b are both positive Observation-2: |a – b| must be Non-Negative and so should be the value of b-a which is possible only when absolute value of b is greater than or equal to absolute value ...
AquaRat_train
Welcome to Wen Feng's Clothes Shop! Big Sale ! Goods Colors Price (each) Pants Black, white, brown Y=65 Coat Black Y= 95 Cap Blue, white Y= 15 T-shirt Red, green Y= 60 Shoes Black , white Y= 80 Bag Blue Y= 35 Peter has two hundred yuan , so what can he buy?
[ "Two bags and two pairs of pants .", "Three caps and two coats .", "One T-shirt and two pairs of shoes .", "A pair of shoes and two pairs of pants ." ]
A
MMLU_train
A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?
[ "120 m", "100 m", "150 m", "140 m" ]
A
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec = 20 m/sec. Length of the train = 20 * 6 = 120 m. ANSWER:C
AquaRat_train
The difference between two integers is 5. Their product is 500. Find the numbers.
[ "15, 20", "25, 27", "21, 26", "20, 25" ]
D
Explanation: Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20 So, the numbers are 20 and 25. ANSWER IS B
AquaRat_train
A milkman sells his milk at CP but he mixes it with water and thereby gains 25%. What is the % of water in the mixture?
[ "25%", "30%", "20%", "12%" ]
C
Here Gain= 25% error = quantity of water he mixes in the milk =x true value = true quantity of milk = T So the formula becomes, 25=x(T−x)×100 ⇒1=x(T−x)×4⇒T−x=4x⇒T=5x Percentage of water in the mixture =xT×100=x5x×100=15×100=20% C
AquaRat_train
What is the process in which a solid changes directly to a gas without going through the liquid state called?
[ "sublimation", "amplification", "Diffusion", "vaporization" ]
A
Sublimation is the process in which a solid changes directly to a gas without going through the liquid state. Solid carbon dioxide is an example of a substance that undergoes sublimation.
SCiQ_train
What is considered to be the "fundamental unit" of life?
[ "organ", "proton", "cell", "bacteria" ]
C
It could easily be said that a cell is the fundamental unit of life, the smallest unit capable of life or the structural and functional unit necessary for life. But whatever it is, a cell is necessary for life. This concept will discuss some of the fundamental properties of the cell with lessons that include the cell s...
SCiQ_train
Known as the "crazy nest lady", Katie Deline-Ray isn't quite sure how many mini handmade harbors she's knitted for injured baby animals. But she's certain it's a lot. Deline-Ray is founder of Wildlife Rescue Nests. She designs and makes strong, soft nests, which she donates to wildlife rescue groups to use as little re...
[ "admires what the wildlife rescues do", "has designed the first nest pattern in the world", "knits nests which are only intended for injured baby birds", "keeps a record of the nests she has made over the years" ]
A
MMLU_train
Destructive interference in waves occurs when what things overlap?
[ "three troughs", "two troughs", "three waves", "two waves" ]
B
Destructive interference in waves occurs when two troughs overlap.
SCiQ_train
What are the most common dietary lipids?
[ "diglycerides", "monoglycerides", "triglycerides", "phospholipids" ]
C
Lipid Digestion A healthy diet limits lipid intake to 35 percent of total calorie intake. The most common dietary lipids are triglycerides, which are made up of a glycerol molecule bound to three fatty acid chains. Small amounts of dietary cholesterol and phospholipids are also consumed. The three lipases responsible f...
SCiQ_train
What happens do the sound during a resonance?
[ "it echoes", "it dissipates", "amplified, it becomes louder", "it becomes quieter" ]
C
Most musical instruments use resonance to amplify the sound waves and make the sounds louder. Resonance occurs when an object vibrates in response to sound waves of a certain frequency. In a musical instrument such as a guitar, the whole instrument and the air inside it may vibrate when a single string is plucked. This...
SCiQ_train
If a car went the first third of the distance at 10 kmh, the second third at 24 kmh, and the last third at 48 kmh, what was the average speed of the car for the entire trip?
[ "44 kmh", "42 kmh", "19 kmh", "50 kmh" ]
C
Assume D/3 = 240 (this number is convenient because it is divisible by 10, 24 and 48) So: 240 = 10*T1 = 24 hrs 240 = 24*T2 = 10 hrs 240 = 48*T3 = 5 hrs T = T1 + T2 + T3 = 39 hrs D = RT (240*3) = R*39 R = 19 ANSWER: B
AquaRat_train
Is your schoolbag too heavy to carry? The e-schoolbag will help you. It is said that e-schoolbags are going to be brought into use in Chinese middle schools soon. In fact, the e-schoolbag should perhaps be called an e-textbook. It is a small computer for students. Heavy schoolbags are a problem for them. But the e-scho...
[ "as heavy as a usual schoolbag", "much heavier than a usual schoolbag", "much lighter than a usual schoolbag", "not so light as a usual schoolbag" ]
C
MMLU_train
Why have rivers in arid regions been reduced to trickles?
[ "global warming", "diversion of water", "rainforest destruction", "emigration" ]
B
SCiQ_train
Number of ways in which the letters of word PARTE can be arranged with vowels in alphabetical order, is
[ "480", "240", "120", "60" ]
D
Solution Order of vowels of fixed ∴ required number of ways are 5!/2!. Answer E
AquaRat_train
The total surface area of a cuboid length 12 m, breadth 10 m and height 8 m.
[ "566", "576", "586", "596" ]
D
Total surface area of cuboid = 2 (lb+bh+lh) = 2 (120 + 80+ 96) = 2 (296) => 596 m(power2) Answer is C.
AquaRat_train
Of the examples listed, which event is thought by scientists to have led to the greatest extinction?
[ "a volcano in Hawaii erupting", "the construction of the Hoover Dam", "whalers of the 17th, 18th, and 19th centuries", "the Mississippi River flooding its banks each summer" ]
C
MMLU_train
What type of feedback intensifies a change in the body’s physiological condition rather than reversing it?
[ "neutral feedback", "negative feedback", "positive feedback", "susceptible feedback" ]
C
Positive Feedback Positive feedback intensifies a change in the body’s physiological condition rather than reversing it. A deviation from the normal range results in more change, and the system moves farther away from the normal range. Positive feedback in the body is normal only when there is a definite end point. Chi...
SCiQ_train
Three sets of 90, 50 and 70 students appeared for an examination and the pass percentage was 50, 90 and 70 respectively. the pass percentage of the whole set is
[ "69.19%", "65.19%", "66.19%", "66.29%" ]
C
Explanation: total passed student =45+45+49=139 139 is 66.19% of210 ANSWER:B
AquaRat_train
Two kinds of Vodka are mixed in the ratio 1:2 and 2:1 and they are sold fetching the profit 10% and 20% respectively. If the vodkas are mixed in equal ratio and the individual profit percent on them are increased by 4/3 and 5/3 times respectively, then the mixture will fetch the profit of
[ "21%", "18%", "Cannot be determined", "20%" ]
D
Mixture 1 and 2 having individual profit % of 10 and 20 respectively. individual profits of vodka A for mixture 1 = 1/3 * 10 = 3.33 individual profits of vodka B for mixture 1 = 2/3 * 10 = 6.77 Individual profits for A and B are increased 4/3 and 5/3 times. Means profits of mixtures 1 and 2 will increase too. Increased...
AquaRat_train
Find the odd man out 2880, 490, 96, 24, 8, 4, 4
[ "4", "490", "96", "24" ]
B
from the right side 4*1=4, 4*2=8 8*3=24 24*4=96 96*5=490 but here given 480 so it's not. 480*6=2880 ANSWER:D
AquaRat_train
To apply for the position of photographer at a local magazine, a photographer needs to include three or four photos in an envelope accompanying the application. If the photographer has pre-selected six photos representative of her work, how many choices does she have to provide the photos for the magazine?
[ "45", "42", "36", "35" ]
D
6C3 + 6C4 = 20 + 15 = 35 The answer is A.
AquaRat_train
A major step in animal evolution was the evolution of what rigid rod that runs the length of the body?
[ "mitochondria", "notochord", "endoderm", "limbic system" ]
B
Another major step in animal evolution was the evolution of a notochord. A notochord is a rigid rod that runs the length of the body. It supports the body and gives it shape (see Figure below ). It also provides a place for muscles to anchor, and counterbalances them when they contract. Animals with a notochord are cal...
SCiQ_train
What is it termed when a squirrel is inanimate
[ "death", "inertia", "colluded", "emanated" ]
A
MMLU_train
40% of a number is more than 20% of 650 by 190. Find the number?
[ "277", "289", "800", "299" ]
C
(40/100) * X – (20/100) * 650 = 190 2/5 X = 320 X = 800 Answer:C
AquaRat_train
A has 10000 chocolates.20% of the chocolates are Eaten.What percentage of the uneaten Chocolates must be eaten so that 3/2 of all chocolates are eaten?
[ "38.21", "37.25", "39.25", "38.32" ]
B
Number of chocolates=10,000 Currently Eaten=10,000*20/100=2000 Uneaten Chocolates=10000-2000=8000 2/3 of all chocolates=5000 The number of chocolates to be eaten to make 2/3 of all chocolates Eaten =5000-2000=3000 So now the question remains - 3000 is how much percentage of uneaten chocolates (8000) = 3000 * 100 /8000 ...
AquaRat_train
A student compared the speeds at which a large and a small marble rolled down an inclined plane. In order to make the findings more reliable, the student should
[ "release the marbles at different heights.", "repeat the experiment several times.", "tilt the plane at different angles.", "use two marbles that are the same size." ]
B
MMLU_train
Which planet has the longest planetary year?
[ "Earth", "Venus", "Jupiter", "Neptune" ]
D
MMLU_train
The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is?
[ "3 kmph", "2 kmph", "5 kmph", "6 kmph" ]
D
The current of a stream = 1 The speed of the motor boat in still water= x Speed downstream = x + 1 Speed upstream = x - 1 since distance = speed × time, we have 35/(x + 1) + 35/(x - 1) = 12 kmph=6 kmph Answer : Option C
AquaRat_train
As a boy,Tim was much influenced by books about the sea, but in fact by the age of fifteen he had decided to become a doctor rather than a sailor. His father was a dentist and as a result Tim had the opportunity of meeting many doctors either at home or elsewhere. When he was fourteen he was already hanging around the ...
[ "was sent to Europe during the war", "worked as a surgeon during the war", "was satisfied with his career as a surgeon.", "decided to give up medicine for faith" ]
C
MMLU_train
A grocery purchased cereal at 40% of its list price and sold it for 90% of its list price. What is its percent gain?
[ "65", "125", "75", "30" ]
B
Cost = 40% of List Price = .4*L Sale = 90% of List Price = .9*L Gain Ratio = (Sale - Cost) / Cost = (.9*L - .4*L) / .4*L = .5*L / .4*L = 1.25 Gain Percent = 100 * Gain Ratio = 100 * 1.25 = 125% = Answer E
AquaRat_train
3^7+3^7+3^7=?
[ "c) 81^5", "b) 81^4", "a) 81^2", "d) 81^6" ]
C
The correct answer is A 81^2
AquaRat_train
Find the value of x: x² - 4x + 4.
[ "-2", "2", "0", "-4" ]
B
That quadratic is factored as follows: x² - 4x +4 = (x-2)(x-2). Lesson 17. Now, it is easy to see that the second factor will be 0 when x = 2. The solution is: x = 2 A
AquaRat_train
Researchers at Stanford University have developed a new material that can move heat out of buildings and into space. The researchers say the material can cool buildings even on hot days. The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panels . However, instead of tur...
[ "suffer high temperature", "have poor air conditioning", "have plenty of food", "are short of power" ]
D
MMLU_train
In which process do signaling molecules from embryonic cells cause transcriptional changes in nearby target cells?
[ "induction", "replication", "maturation", "orientation" ]
A
SCiQ_train
Positive integer x has p factors; 3x has 3 factors; Which of the following values can p take? I. 1 II. 2 III. 3
[ "II or III", "I or II", "only I", "only II" ]
D
Squares have odd number of factors.The square which is a multiple of 3 is 9. 3 has factors 1,3 . Therefore 2 factors Answer E
AquaRat_train
When you are ill, you should go to see a doctor. After the doctor looks you over, he will give you a note to take to the _ for some medicine. Chemists are usually good at reading doctors' notes. But sometimes doctors write too badly and even the chemist can not read them. One day a woman wrote to a doctor to invite him...
[ "go to the chemist to get some medicine", "call the doctor have dinner with them", "read the note again", "take the reply to the chemist for help" ]
D
MMLU_train
A can do a job in 30 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?
[ "26 days", "39 days", "31 days", "30 days" ]
D
C 1/30 + 1/30 = 1/15 15*2 = 30 days
AquaRat_train
As a boy, Sanders was much influenced by books about the sea, but by the age of fifteen he had decided to become a doctor rather than a sailor. His father was a doctor. So he was often with the doctors and got along very well with them. When he was fourteen, he was already hanging around the hospital where he was supp...
[ "he was good at medical operations on the wounded", "he succeeded in teaching people how to save their lives themselves", "a doctor was the happiest man", "his wish of being a life-saver could hardly come true" ]
A
MMLU_train
What is the process of making an observation in terms of a numerical scale and recording the value?
[ "graduation", "measurement", "respiration", "ambient" ]
B
Measurement is the process of making an observation in terms of a numerical scale and recording the value.
SCiQ_train
In October on the east coast of Australia migrating humpback whales pass very close to the shore. With the help of Max Egan, we went to film them near Byron Bay. It was extremely exciting to spot the little puffs of spray on the horizon. When migrating, the whales can be traveling at speeds of about 12km/h and can dive...
[ "The little puffs.", "The songs of whales.", "The traveling speed of whales.", "The depth of the whale's dive." ]
B
MMLU_train
Humans need lipids for many vital functions such as storing energy and forming what?
[ "cell membranes", "zygotes", "enzymes", "ionic bonds" ]
A
Humans need lipids for many vital functions such as storing energy and forming cell membranes. Lipids can also supply cells with energy. In fact, a gram of lipids supplies more than twice as much energy as a gram of carbohydrates or proteins. Lipids are necessary in the diet for most of these functions. Although the hu...
SCiQ_train
Amphibian larvae go through what process to change into the adult form?
[ "parthenogenesis", "metamorphosis", "merging", "morphing" ]
B
Amphibian larvae go through metamorphosis to change into the adult form.
SCiQ_train
400-year-old plants from the Little Ice Age were brought back to life, which could help us understand how the Earth will deal with climate change. Moss found buried beneath the Teardrop glacier on Ellesmere Island in Canada has been brought back to life. Findings suggest that these plants could help repopulate region...
[ "knowing what the plants during the Little Ice Age were like", "understanding how ecosystems recover from glaciers.", "regrowing many species that have been destroyed before.", "figuring out the effects of melting ice caps on moss." ]
B
MMLU_train
A tropical rain forest is an amazing place. Thousands of different kinds of plants and animals make their homes there. Some are not found anywhere else in the world. If the rain forests are not protected, some species of plants and animals could disappear forever, taking their resources with them. Scientists have k...
[ "The natives don't know the value of the plants.", "The rain forests are beneficial to the entire world.", "People show little interest in protecting the rain forests.", "Cures for dangerous diseases have been found in the rain forests." ]
B
MMLU_train
If a person restores a garden complete with oaks, then they have replaced
[ "concrete", "jelly", "steam", "a resource" ]
D
MMLU_train
Radiation, chemicals, and infectious agents are types of what?
[ "mutagens", "mutations", "dioxins", "endogenous" ]
A
Types of mutagens include radiation, chemicals, and infectious agents.
SCiQ_train
A monkey start climbing up a tree 20ft tall.Each hour it hops 3 ft and slips back 2ft.How much time would it take the monkey to reach the top.
[ "15 hrs", "17 hrs", "16 hrs", "18 hrs" ]
D
if monkey hops 3ft and slips back 2ft in a hour, it means the monkey hops (3ft-2ft)= 1ft/hr. similarly in 17hrs it wil be 17ft. Bt since the height of the tree is 20ft, so if the monkey hops up the tree in the next hr i.e 18th hr then it reaches at the top of the tree. hence it takes 18 hrs for monkey to reach at the t...
AquaRat_train
Which statement about all living organisms is true?
[ "They have limbs.", "They produce their own food.", "They breathe air.", "They have at least one cell." ]
D
MMLU_train
Red blood cells, white blood cells, platelets, and plasma are all components of what fluid?
[ "heart", "Vessals", "brain", "blood" ]
D
40.2 Components of the Blood Specific components of the blood include red blood cells, white blood cells, platelets, and the plasma, which contains coagulation factors and serum. Blood is important for regulation of the body’s pH, temperature, osmotic pressure, the circulation of nutrients and removal of waste, the dis...
SCiQ_train
x,y are odd and z is even then ((x^2+y^2)z^2)/8 is
[ "fraction", "fractiWQ", "either even or odd", "odd" ]
C
As x, y are odd x2+y2x2+y2 is always even. Now if z is a multiple of 4, then z2z2 is divisible by 8, then the equation is even. if z is a not a multiple of 4, but only a multiple of 2, then z2z2 is not completely divisible as it contains only two 2's and other two is cancelled in x2+y2x2+y2 which results in an odd numb...
AquaRat_train
Last Friday a storm swept through two villages in the New Territories , destroying fourteen homes. Seven others were so badly destroyed that their owners had to leave them, and fifteen others had broken windows or broken roofs. One person was killed, several were badly hurt and taken to hospital, and a number of other ...
[ "Fourteen.", "Twenty-one", "Twenty-nine.", "Thirty-six." ]
D
MMLU_train
If log10 2 = 0.3010, the value of log10 80 is:
[ "1.903", "4.5231", "None of these", "1.602" ]
A
Explanation: log10 80 = log10 (8 x 10) = log10 8 + log10 10 = log10 (23 ) + 1 = 3 log10 2 + 1 = (3 x 0.3010) + 1 = 1.9030. ANSWER IS B
AquaRat_train
Tears came into this mother's eyes when she talked about waking up her son. Every morning, her ten-year-old boy puts up one finger with his eyes still closed, begging for one more minute to sleep. Why is he so sleepy? Because, like thousands of student "early birds" in China, he has to get up before 6 a.m. every mornin...
[ "The body's weakness.", "Nodding off in class.", "Near-sighted eyes.", "Poor academic developments." ]
D
MMLU_train
If a and b are prime numbers, which of the following CANNOT be the value of ab?
[ "25", "23", "21", "9" ]
B
23 is a prime number itself and so cannot be multiple of two prime numbers.. ANSWER:D
AquaRat_train
When specific hormones are present in the blood of a hen, an egg is released from an ovary. Which two systems are involved with the release of an egg?
[ "immune and digestive systems", "digestive and endocrine systems", "reproductive and immune systems", "endocrine and reproductive systems" ]
D
MMLU_train
Mutations that lead to cancer usually occur in genes that control the cell cycle. these include tumor-suppressor genes and what?
[ "proto-oncogenes", "Darkness Oncogenes", "extinction - oncogenes", "apparition - oncogenes" ]
A
Mutations that lead to cancer usually occur in genes that control the cell cycle. These include tumor-suppressor genes and proto-oncogenes.
SCiQ_train
On eight consecutive flips of a coin, what is the probability that all eight produce the same result?
[ "1/8", "1/4", "1/128", "1/16" ]
C
TTTTTTTT case --> P = (1/2)^8 = 1/256 HHHHHHHH case --> P = (1/2)^8 = 1/256 P(TTTTTTTT or HHHHHHHH) = 1/8 + 1/8 = 1/128 Answer: B
AquaRat_train
Virtually every task performed by living organisms requires this?
[ "mineral", "solids", "metals", "energy" ]
D
Introduction Virtually every task performed by living organisms requires energy. Energy is needed to perform heavy labor and exercise, but humans also use energy while thinking, and even during sleep. In fact, the living cells of every organism constantly use energy. Nutrients and other molecules are imported into the ...
SCiQ_train
Salt concentration, water temperature, plankton, and the whale shark might all be used in a description of an ocean
[ "climate.", "food web.", "ecosystem.", "population." ]
C
MMLU_train
What is the cutting and burning trees to clear land for farming called?
[ "slash-and-burn agriculture", "reduce-and-ignite agriculture", "cut-and-smoke farming", "drop-and-blaze agriculture" ]
A
Cutting and burning trees to clear land for farming is called slash-and-burn agriculture. How does this affect the atmosphere?.
SCiQ_train
Taking away a city's rubbish is a big job. Every day trucks come into a city to collect it. Most rubbish is made up of things we can't eat or use. If we kept these things we would soon have a mountain of rubbish. In some cities the rubbish is collected and taken outside of the city to a dump . Often the city dump is pl...
[ "By burning it off.", "By putting it in water.", "By throwing it away.", "By reusing and recycling it." ]
D
MMLU_train
Which of the following expressions CANNOT have a negative value
[ "|2a + b| – |a + b|", "|a^3 + b^3| – a – b", "|a + b| + |a – b|", "a^2 - b^2 – 2|ab|" ]
C
Whenever you are required to find if the equation is a perfect square or not, try to bring everything in the form of a perfect square as they are always positive. Of the given options, only option D can be written in from of a perfect square. |a + b| + |a – b| This will always be positive. Correct Option: A
AquaRat_train
Harmful instances of what can result in errors in protein sequence that yield non-functional proteins?
[ "mutation", "radiation", "bioaccumulation", "infection" ]
A
Harmful mutations can result in errors in protein sequence, creating partially or completely non-functional proteins.
SCiQ_train
What science is the study of matter and the changes it undergoes?
[ "astronomy", "geology", "chemistry", "biology" ]
C
Chemistry is the study of matter and the changes it undergoes.
SCiQ_train
Physical and chemical differences help ecologists distinguish between freshwater and marine types of what?
[ "habitats", "biomes", "microbiomes", "cities" ]
B
SCiQ_train
What will be the compound interest on a sum of Rs. 29,000 after 3 years at the rate of 12% p.a.?
[ "s.11742.91", "s.10123.21", "s.11123.20", "s.11123.77" ]
A
Amount = [29000 * (1 + 12/100)3] = 29000 * 28/25 * 28/25 * 28/25 = Rs. 40742.91 C.I. = (40742.91 - 29000) = Rs. 11742.91 Answer:B
AquaRat_train
A train 75 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is?
[ "28", "32", "22", "88" ]
B
Speed of the train relative to man = (75/10) m/sec = (15/2) m/sec. [(15/2) * (18/5)] km/hr = 27 km/hr. Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr. x - 5 = 27 ==> x = 32 km/hr.Answer:E
AquaRat_train