GATE Practice Question and Answer

Q: Who has the power to expel senators from office? 1503 0

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Answer :
Explanation :

House of representatives has the power of impeachment in the office.

Q: 6 choose 3 = 1503 0

  • 1
    20
    Correct
    Wrong
  • 2
    30
    Correct
    Wrong
  • 3
    18
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 1. "20"
Explanation :

Answer: A) 20 Explanation: 6 choose 3 means number of possible unordered combinations when 3 items are selected from 6 available items i.e, nothing but 6C3. Now 6C3 = 6 x 5 x 4/3 x 2 x 1 = 120/6 = 20.

Q: Vishal is 24th from either end of the row of boys ? How many boys are there in the row ? 1502 0

  • 1
    48
    Correct
    Wrong
  • 2
    49
    Correct
    Wrong
  • 3
    46
    Correct
    Wrong
  • 4
    47
    Correct
    Wrong
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Answer : 4. "47"
Explanation :

Answer: D) 47 Explanation: Given that Vishal is 24th from either end of the row i.e from two sides   1 2 3 4 5 . . . . . .24 23 22 21 20 . . . . . 5 4 3 2 1    Here before Vishal there are 23 members and after Vishal there are 23 members   = 23+1+23 --> 47 members in the row.

Q: What animal has the highest blood pressure? 1501 0

  • 1
    Elephant
    Correct
    Wrong
  • 2
    Giraffe
    Correct
    Wrong
  • 3
    Lion
    Correct
    Wrong
  • 4
    Rabbit
    Correct
    Wrong
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Answer : 2. "Giraffe"
Explanation :

Answer: B) Giraffe Explanation: Giraffe has the highest blood pressure among animals.  This is due to the fact that there is a large pressure drop (~100 mmhg) as the blood is transported from the heart, up the neck, to the brain. This is about twice the normal blood pressure of humans (120/80 mmhg).

Q: Find the Missing Number Puzzle for the Given 1501 0

  • 1
    8
    Correct
    Wrong
  • 2
    16
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 3. "9"
Explanation :

Answer: C) 9 Explanation: Given   6 = 3 => Number of letters in SIX = 3   12 = 6 => Number of letters in TWELVE = 6   14 = 8 => Number of letters in FOURTEEN = 8   Similarly,   22 = 9 => Number of letters in TWENTY TWO = 9           Therefore, 22 = 9.

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 ? 1500 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: Which of the following vitamin helps in clotting of blood? 1500 0

  • 1
    Vitamin K
    Correct
    Wrong
  • 2
    Vitamin D
    Correct
    Wrong
  • 3
    Vitamin B1
    Correct
    Wrong
  • 4
    Vitamin B2
    Correct
    Wrong
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Answer : 1. "Vitamin K"
Explanation :

Answer: A) Vitamin K Explanation: Vitamin K helps in clotting of blood. It is used by the body to help blood clot.   Warfarin (Coumadin) is used to slow blood clotting. By helping the blood clot, vitamin K might decrease the effectiveness of warfarin (Coumadin).

Q: In a mixture of milk and water the proportion of water by weight was 75%. If in 60 gm of mixture 15 gm water was added, what would be the percentage of water ? (Weight in gm) 1499 0

  • 1
    80%
    Correct
    Wrong
  • 2
    70%
    Correct
    Wrong
  • 3
    75%
    Correct
    Wrong
  • 4
    62%
    Correct
    Wrong
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Answer : 1. "80%"
Explanation :

Answer: A) 80% Explanation: Water in 60 gm mixture=60 x 75/100 = 45 gm. and Milk = 15 gm.   After adding 15 gm. of water in mixture, total water = 45 + 15 = 60 gm and weight of a mixture = 60 + 15 = 75 gm.   So % of water = 100 x 60/75 = 80%.

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