GATE Practice Question and Answer

Q: When 5% is lost in grinding Maize, a country has to import 20 million bags; but when only 2% is lost, it has to import only 15 million bags. Find the quantity of Maize, which grows in the country ? 1954 0

  • 1
    188 million
    Correct
    Wrong
  • 2
    166 2/3 million
    Correct
    Wrong
  • 3
    192 3/4 million
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "166 2/3 million"
Explanation :

Answer: B) 166 2/3 million Explanation: 5% - 2% = 3%=> 3% ------ 5 million bags 100% ---- ? => 166 2/3 million bags.

Q: A train covered k km at 40 kmph and another 2k km at 20 kmph. Find the average speed of the train in covering the entire 3k km ? 1954 0

  • 1
    28 kmph
    Correct
    Wrong
  • 2
    24 kmph
    Correct
    Wrong
  • 3
    26 kmph
    Correct
    Wrong
  • 4
    32 kmph
    Correct
    Wrong
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Answer : 2. "24 kmph"
Explanation :

Answer: B) 24 kmph Explanation: Total time taken = k/40 + 2k/20 hours = 5k/40 = k/8 hours Average speed = 3k/(k/8) = 24 kmph.

Q: Which of the following is a renewable source of energy 1954 0

  • 1
    Natural gas
    Correct
    Wrong
  • 2
    Coal
    Correct
    Wrong
  • 3
    Wind
    Correct
    Wrong
  • 4
    Oil
    Correct
    Wrong
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Answer : 3. "Wind"
Explanation :

Answer: C) Wind Explanation: The energy sources that are constantly being replenished, such as sunlight, wind, and water. This means that we can use them as much as we want, and we do not have to worry about them running out. Additionally, renewable energy sources are usually much more environmentally friendly than fossil fuels. Overall, they release very few chemicals, like carbon dioxide, that can harm the environment. Most of this energy comes from fossil fuels, such as coal, oil, and natural gas. These are nonrenewable energy sources, which means that if we use them all up, we can never get more during our lifetime. Fossil fuels also contribute greatly to global climate change by releasing carbon dioxide into the air when they are burned.

Q: Guess the Hidden Alphabet in this Puzzle ? 1953 0

  • 1
    X
    Correct
    Wrong
  • 2
    Y
    Correct
    Wrong
  • 3
    B
    Correct
    Wrong
  • 4
    D
    Correct
    Wrong
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Answer : 1. "X"
Explanation :

Answer: A) X Explanation: The logic in the given puzzle is  Addition of numeric values of corresponding letters in the first three figures gives respective corresponding letter in fourth figure.  i.e, A = 1 , W = 23 , B = 2 => 2 + 1 + 23 =26 = 'Z' Similarly, L = 12, K = 11 , A = 1 => 1 + 11 + 12 = 24 = 'X' Here the missing letter is 'X'.

Q: At what rate percent on simple interest will Rs.415 amount to Rs.514 in 4 years  ? 1953 0

  • 1
    4.58 %
    Correct
    Wrong
  • 2
    5.96 %
    Correct
    Wrong
  • 3
    6.52 %
    Correct
    Wrong
  • 4
    4.98 %
    Correct
    Wrong
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Answer : 2. "5.96 %"
Explanation :

Answer: B) 5.96 % Explanation: Difference in amount = 514 - 415 = 99 99 = (415 x 4 x R)/100 R = 5.96%

Q: You can drop me from the longest building & I will be LIVE, but if you drop me in the water I DIE. WHO AM I? 1953 0

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Answer :
Explanation :

A Paper.

Q: If two line pa + b = 2 and 3a + b = 4 are parallel to each other, then what is the value of p ? 1952 0

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

Answer: C) 3 Explanation: Given two lines are parallel pa+b=2 b=-pa+2..........(1) 3a+b=4 b=-3a+4 ...........(2) m1 = -p m2= -3 The condition for the two lines to be parallel is m1=m2 p = 3

Q: What is 85 of 352? 1952 0

  • 1
    21.5%
    Correct
    Wrong
  • 2
    24.14%
    Correct
    Wrong
  • 3
    23.68%
    Correct
    Wrong
  • 4
    25.47%
    Correct
    Wrong
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Answer : 2. "24.14%"
Explanation :

Answer: B) 24.14% Explanation: Here 85 of 352 => 85 is what percent in 352 Let p% of 352 is 85 Percentage(%) is generally calculated in the total of 100. => p x 352/100  = 85 => p = 8500/352  = 24.14%   Hence, 85 is 24.14% of 352.

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