GATE Practice Question and Answer
8Q: Tides are primarily a result of the ┬а____ ? 2419 05b5cc6d5e4d2b4197774e5f7
5b5cc6d5e4d2b4197774e5f7- 1Attraction of the Moontrue
- 2Farrel's lawfalse
- 3Ocean Currentsfalse
- 4Earth's pressure systemfalse
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Answer : 1. "Attraction of the Moon"
Explanation :
Answer: A) Attraction of the Moon Explanation:
Q: A number when subtracted by 1/7 th of itself gives the same value as the sum of all the angles of a triangle. What is the number? 2417 05b5cc619e4d2b4197774b700
5b5cc619e4d2b4197774b700- 1420false
- 2210true
- 370false
- 435false
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Answer : 2. "210"
Explanation :
Answer: B) 210 Explanation: Let the required number be 'p' We know, sum of angles in a triangle are 180 deg According to given data, p - p/7 = 180 7p - p = 180 x 7 => 6p = 1260 => p = 1260/6 = 210
Q: Who has the best overall health? 2416 05b5cc698e4d2b4197774c609
5b5cc698e4d2b4197774c609- 1a person who exercises regularly and is not overweightfalse
- 2a person who is not ill and is physically activefalse
- 3a person who lives longer than his or her grandparentsfalse
- 4a person who balances social, physical, and mental healthtrue
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Answer : 4. "a person who balances social, physical, and mental health"
Explanation :
Answer: D) a person who balances social, physical, and mental health Explanation: A person who balances all the three healths such as Physical, mental and Social healths has the best overall health.
Q: Which of the following animals have teeth in their stomach? 2412 05b5cc6bde4d2b4197774d8f7
5b5cc6bde4d2b4197774d8f7- 1Frogsfalse
- 2Crabstrue
- 3Snakesfalse
- 4Cockroachfalse
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Answer : 2. "Crabs"
Explanation :
Answer: B) Crabs Explanation:
Q: Statements : All keys are locks. All locks are bangles. All bangles are cars. Conclusion : a. Some cars are locks.┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а b. Some bangles are keys.┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а c. Some cars are keys. 2409 05b5cc736e4d2b4197774f897
5b5cc736e4d2b4197774f897- 1Only a followsfalse
- 2Only c followsfalse
- 3Only a & b followsfalse
- 4a, b & c followstrue
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Answer : 4. "a, b & c follows"
Explanation :
Answer: D) a, b & c follows Explanation: All locks are bangles + All bangles are cars = A + A = A= All locks are cars => Some cars are locks.Hence conclusion (a) follows.All keys are locks + All locks are bangles = A + A = A= All keys are bangles => some bangles are keys.Hence conclusion (b) follows.All keys are bangles + All bangles are cars = A + A = A= All keys are cars => Some cars are keys.Hence conclusion (C) follows. Thus all a, b and c follows.
Q: The product of two positive numbers is p. If each of the numbers is increased by 2, the new product is how much greater than twice the sum of the two original numbers ? 2407 05b5cc74ae4d2b4197774faae
5b5cc74ae4d2b4197774faae- 1p timesfalse
- 22p timesfalse
- 3(p + 4) timestrue
- 4(2p + 3) timesfalse
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Answer : 3. "(p + 4) times"
Explanation :
Answer: C) (p + 4) times Explanation: Let the two no's be a and b;Given product of the no's is p = ab;If the each nos is increased by 2 then the new product will be (a+2)(b+2) = ab + 2a + 2b + 4= ab + 2(a+b) + 4= p + 2(a+b) + 4Hence the new product is (p+4) times greater than twice the sum of the two original numbers.
Q: I have four wings, but cannot fly, I never laugh and never cry; On the same spot I'm always found, toiling away with little sound. ┬аWhat am I? 2404 05b5cc611e4d2b4197774b66f
5b5cc611e4d2b4197774b66f- Show AnswerHide Answer
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Answer :
Explanation :
A Windmill.
Q: A boat takes 2 hours to travel from point A to B in still water. To find out its speed upstream, which of the following information is/are required? A. Distance between point A and B. B. Time taken to travel downstream from B to A. C. Speed of the stream of water. 2403 05b5cc69fe4d2b4197774c9f1
5b5cc69fe4d2b4197774c9f1- 1Only A and Bfalse
- 2Only B and Cfalse
- 3All are requiredfalse
- 4Any one pair of A and B, B and C or C and A is sufficienttrue
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Answer : 4. "Any one pair of A and B, B and C or C and A is sufficient"
Explanation :
Answer: D) Any one pair of A and B, B and C or C and A is sufficient Explanation: Let distance between A & B = d kmLet speed in still water = x kmphLet speed of current = y kmph from the given data,d/x = 2 From A) we get dFrom B) we get d/x+yFrom C) we get y ┬а So, Any one pair of A and B, B and C or C and A is sufficient to give the answer i.e, the speed of upstream.