GATE Practice Question and Answer

Q: Which of the Phrases (1), (2), (3) and (4) given below should replace the phrases printed in bold in the sentence to make it grammatically correct.    They claim that their employees are highly committing and disciplined. 2128 0

  • 1
    Have been highly committed
    Correct
    Wrong
  • 2
    Have high commitments
    Correct
    Wrong
  • 3
    Are highly committed
    Correct
    Wrong
  • 4
    No correction required
    Correct
    Wrong
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Answer : 3. "Are highly committed"
Explanation :

Answer: C) Are highly committed Explanation: As per the rule of adverb, the adverb is followed by the third form of verb.

Q: The purest form of iron is 2128 0

  • 1
    wrought iron
    Correct
    Wrong
  • 2
    steel
    Correct
    Wrong
  • 3
    pig iron
    Correct
    Wrong
  • 4
    nickel steel
    Correct
    Wrong
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Answer : 1. "wrought iron"
Explanation :

Answer: A) wrought iron Explanation: Wrought Iron is the purest form of iron. It contains 0.12 to 0.25% carbon and so it is the purest form of iron.

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Answer : 2. "1/6"
Explanation :

Answer: B) 1/6 Explanation: Total work is given by L.C.M of 72, 48, 36 Total work = 144 units Efficieny of A = 144/72 = 2 units/day Efficieny of B = 144/48 = 3 units/day Efficieny of C = 144/36 = 4 units/day   According to the given data, 2 x p/2 + 3 x p/2 + 2 x (p+6)/3 + 3 x (p+6)/3 + 4 x (p+6)/3 = 144 x (100 - 125/3) x 1/100 3p + 4.5p + 2p + 3p + 4p = 84 x 3 - 54 p = 198/16.5 p = 12 days.   Now, efficency of D = (144 x 125/3 x 1/100)/10 = 6 unit/day (C+D) in p days = (4 + 6) x 12 = 120 unit Remained part of work = (144-120)/144 = 1/6.

Q: A disaccharide is formed by the chemical bonding of 2124 0

  • 1
    two monosaccharides
    Correct
    Wrong
  • 2
    two polysaccharides
    Correct
    Wrong
  • 3
    one monosaccharide and one polysaccharide
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 1. "two monosaccharides"
Explanation :

Answer: A) two monosaccharides Explanation: Disaccharides are formed when two monosaccharides join together by the dehydration synthesis reaction resulting in a glycosidic bond between the two monosaccharide molecules. The reaction produces water as a side product.

Q: Choose the missing terms in the given series from the four alternatives given below. GMQ, JOT, MQW, ? 2124 0

  • 1
    PTZ
    Correct
    Wrong
  • 2
    ORY
    Correct
    Wrong
  • 3
    VXY
    Correct
    Wrong
  • 4
    PSZ
    Correct
    Wrong
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Answer : 4. "PSZ"
Explanation :

Answer: D) PSZ Explanation: The first letter moves three steps forward. The second letter moves two steps forward. The third letter moves three steps forward.

Q: Light from the sun reaches us in nearly 2123 0

  • 1
    5 min
    Correct
    Wrong
  • 2
    4.30 hrs
    Correct
    Wrong
  • 3
    8 min
    Correct
    Wrong
  • 4
    5.30 hrs
    Correct
    Wrong
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Answer : 3. "8 min"
Explanation :

Answer: C) 8 min Explanation: The light from the sun takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface.   The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury to about 5.3 hours for Pluto.

Q: Two numbers are 35% and 42% are less than a third number .How much percent is the second number less than the first ? 2123 0

  • 1
    10.769 %
    Correct
    Wrong
  • 2
    11.23 %
    Correct
    Wrong
  • 3
    10.4 %
    Correct
    Wrong
  • 4
    9.87 %
    Correct
    Wrong
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Answer : 1. "10.769 %"
Explanation :

Answer: A) 10.769 % Explanation: I      II     III 65   58   100 65 -------- 7100 ------ ?  => 10.769%

Q: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is  ? 2122 0

  • 1
    3 years
    Correct
    Wrong
  • 2
    4 years
    Correct
    Wrong
  • 3
    2.5 years
    Correct
    Wrong
  • 4
    2 years
    Correct
    Wrong
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Answer : 2. "4 years"
Explanation :

Answer: B) 4 years Explanation: P1+20100n > 2P        Now, (6/5 x 6/5 x 6/5 x 6/5) > 2.       So, n = 4 years.

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