GATE Practice Question and Answer
8Q: Which must be true for metamorphism to occur? 2040 05b5cc666e4d2b4197774bf21
5b5cc666e4d2b4197774bf21- 1The parent rock must be in solid form.false
- 2Tons of pressure must be applied.false
- 3The process must take place underground.false
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Metamorphism is the change of minerals or geologic texture in pre-existing rocks, without the protolith melting into liquid magma. The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. The parent rock must be in solid form. Tons of pressure must be applied for metamorphism to happen. The process must take place underground.
Q: 20 men went to a restaurant. Ninteen of them paid Rs.70 each and the twentieth man paid Rs.90.25 more than the average of all the 20 men. What is the total bill ? 2039 05b5cc73ae4d2b4197774f8b5
5b5cc73ae4d2b4197774f8b5- 1Rs. 1495true
- 2Rs. 548false
- 3Rs. 850false
- 4Rs. 1750false
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Answer : 1. "Rs. 1495"
Explanation :
Answer: A) Rs. 1495 Explanation: Let the average bill paid by twenty members = 'x' But 19 men paid each = Rs. 70 20th man paid Rs. 90.25 more than the avg bill of 20 = x + 90.25 20x = 19(70) + x + 90.2519x = 1330 + 90.2519x = 1420.25x = 1420.25/19 = Rs. 74.75 But the total bill = 20 x 74.75 = Rs. 1495.
Q: Which statement best describes the cold war in 1989? 2038 05b5cc688e4d2b4197774c355
5b5cc688e4d2b4197774c355- 1The coldwar startedfalse
- 2Atom bomb on USSRfalse
- 3Glorious revolution occuredfalse
- 4Beginning of the end of cold wartrue
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Answer : 4. "Beginning of the end of cold war"
Explanation :
Answer: D) Beginning of the end of cold war Explanation: The Cold War started with building tensions between the US and the USSR during World War II. As Stalin began to annex more countries and spread communism throughout Eastern Europe, the US began to feel threatened and feared that they would start a war amongst the capitalist nations. The US started an attempt to limit the spread of communism and protect capitalism, which led to a series of passive aggressive and indirectly hostile exchanges between the two nations. The beginning of the end of the cold war, the Berlin Wall came down. The USSR began to collapse the following year, in 1990.
Q: A letter is takenout at random from 'ASSISTANT' and another is taken out from 'STATISTICS'. The probability that they are the same letter is : 2038 05b5cc7d0e4d2b41977751213
5b5cc7d0e4d2b41977751213- 135/96false
- 219/90true
- 319/96false
- 4None of thesefalse
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Answer : 2. "19/90"
Explanation :
Answer: B) 19/90 Explanation: ASSISTANT→AAINSSSTT STATISTICS→ACIISSSTTT Here N and C are not common and same letters can be A, I, S, T. Therefore Probability of choosing A = 2C19C1×1C110C1 = 1/45 Probability of choosing I = 19C1×2C110C1 = 1/45 Probability of choosing S = 3C19C1×3C110C1 = 1/10 Probability of choosing T = 2C19C1×3C110C1 = 1/15 Hence, Required probability = 145+145+110+115= 1990
Q: There is 50% increase in an amount in 5 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate ? 2037 05b5cc767e4d2b4197774fe01
5b5cc767e4d2b4197774fe01- 1Rs. 5422false
- 2Rs. 5489false
- 3Rs. 3972true
- 4Rs. 6145false
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Answer : 3. "Rs. 3972"
Explanation :
Answer: C) Rs. 3972 Explanation: Let p = Rs. 100. Then, S.I is Rs. 50 and time = 5 years. ∴ R = 100×50100×5= 10% p.a. Now, p = Rs. 12,000 , T = 3 years and R = 10% p.a. C.I. = Rs. 12000×1+101003-1= Rs. 3972
Q: What color does yellow and green make? 2035 05b5cc69fe4d2b4197774c9d7
5b5cc69fe4d2b4197774c9d7- 1Limetrue
- 2Ocean mistfalse
- 3Maroonfalse
- 4Tangerinefalse
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Answer : 1. "Lime"
Explanation :
Answer: A) Lime Explanation: Yellow and green color mix make a Lime color. The three primary colors in additive mixing are red, green, and blue. In the absence of color or, when no colors are showing, the result is black. If all three primary colors are showing, the result is white. When red and green combine, the result is yellow. When red and blue combine, the result is magenta. When blue and green combine, the result is cyan.
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Answer :
Explanation :
Scores of individuals : Dhoni= 80,30,10,10,1Raina=100,25,3,2,1Kholi=85,20,15,10,1Shikhar=90,20,15,3,3 Above combination satisfies all conditions given in the question. Answer 1) Raina Answer 2) Kohli and Shikhar Answer 3) Dhoni
Q: Which three components are common to all amino acids? 2035 05b5cc619e4d2b4197774b72e
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Answer :
Explanation :
Any two amino acids vary structure by the r-group, otherwise all amino acids are in the same structure. All amino acids have in common carboxyl group -COO , amino group -NH3+ and a hydrogen -H and a r-group which are all bonded to a central carbon.

