GATE Practice Question and Answer

Q: Read the arrangement carefully and give the answer of following questions ? K$23DBE8HM4@5JF4%K1+WR#AA*415 How many such symbols are there which is not immediately preceded by a letter but immediately followed by a number ? 3686 0

  • 1
    1
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 1. "1"
Explanation :

Answer: A) 1 Explanation: Only one such symbol is there in the given arrangement. It is 4@5.

Q: Excel displays the current cell address in the 3679 0

  • 1
    Title Bar
    Correct
    Wrong
  • 2
    Name Box
    Correct
    Wrong
  • 3
    Status Bar
    Correct
    Wrong
  • 4
    Formula bar
    Correct
    Wrong
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Answer : 2. "Name Box"
Explanation :

Answer: B) Name Box Explanation:

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Answer : 4. "E = 4 & Y = 2"
Explanation :

Answer: D) E = 4 & Y = 2 Explanation: Let the the age of the elder boy = E   Let the the age of the younger boy = Y   Given that Y = cube root of EY   => Y3 = EY => E = Y2 .....(1)By the condition of number replacement the age of the father is YE   The Mother's age = EY/2   But she is 3 years less than father => EY/2 + 3 = YE2YE = EY + 6 ......(2)   Then now from the given options we can identify which satisfies the all the conditions.   Here Y =2 and E = 4 satisfies all the conditions.

Q: If there are 150 questions in a 3 hr examination. Among these questions 50 are type A problems, which requires twice as much as time be spent on the rest of the type B problems. How many minutes should be spent on type A problems ? 3663 0

  • 1
    75 min
    Correct
    Wrong
  • 2
    82 min
    Correct
    Wrong
  • 3
    90 min
    Correct
    Wrong
  • 4
    101 min
    Correct
    Wrong
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Answer : 3. "90 min"
Explanation :

Answer: C) 90 min Explanation: Let X = Time taken for each of Type B Problems(100 Problems)And 2X = Time taken for each of Type A problems(50 problems) Total time period = 3hrs = 3 x 60min = 180 minutes 100X + 50(2X) = 180100X + 100X = 180200X = 180 min X = 180/200X = 0.90 min By convertiing into seconds, X = 0.90 x 60 secondsX = 54 sec So, time taken for Part A problems is = 54 x 2 x 50 = 5400 seconds= 5400/60sec = 90 minutes.

Q: What word in the English language is always spelled incorrectly? 3652 0

  • 1
    Schezwan
    Correct
    Wrong
  • 2
    Yorker
    Correct
    Wrong
  • 3
    Incorrectly
    Correct
    Wrong
  • 4
    Psycologically
    Correct
    Wrong
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Answer : 3. "Incorrectly"
Explanation :

Answer: C) Incorrectly Explanation: INCORRECTLY is the only English word which is always spelled incorrectly.

Q: A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current  ? 3625 0

  • 1
    1 kmph
    Correct
    Wrong
  • 2
    3.2 kmph
    Correct
    Wrong
  • 3
    1.5 kmph
    Correct
    Wrong
  • 4
    2 kmph
    Correct
    Wrong
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Answer : 3. "1.5 kmph"
Explanation :

Answer: C) 1.5 kmph Explanation: 72 --- 9 ? ---- 1 => Down Stream = 8 45 ---- 9 ? ---- 1 => Up Stream = 5 Speed od current S = ? S = (8 - 5)/2 = 1.5 kmph.

Q: What is the main component of biogas and natural gas? 3621 0

  • 1
    Carbon dioxide
    Correct
    Wrong
  • 2
    Butane
    Correct
    Wrong
  • 3
    Hydrogen Sulphide
    Correct
    Wrong
  • 4
    Methane
    Correct
    Wrong
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Answer : 4. "Methane"
Explanation :

Answer: D) Methane Explanation: Methane is the main component of biogas and natural gas.

Q: Which of the following is biodegradable? 3621 0

  • 1
    Iron nails
    Correct
    Wrong
  • 2
    DDT
    Correct
    Wrong
  • 3
    Silver foil
    Correct
    Wrong
  • 4
    Leather bags
    Correct
    Wrong
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Answer : 4. "Leather bags"
Explanation :

Answer: D) Leather bags Explanation: Biodegradable substances can be broken down into simpler, harmless substances in nature with due course of time by the biological process such as action of microbes. They can be recycled as a part of food chain.   Here, Leather bags are biodegradable.

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