GATE Practice Question and Answer

Q: If the numerator of a fraction is increased by 150% and the denominator of the fraction is increased by 350%, the resultant fraction is 25/51. What is the original fraction ? 2106 0

  • 1
    31/25
    Correct
    Wrong
  • 2
    15/17
    Correct
    Wrong
  • 3
    14/25
    Correct
    Wrong
  • 4
    11/16
    Correct
    Wrong
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Answer : 2. "15/17"
Explanation :

Answer: B) 15/17 Explanation: The original fraction is  2551 × 350+100150+100  = 15/17.

Q: In how many ways word of 'GLACIOUS' can be arranged such that 'C' always comes at end? 2104 0

  • 1
    3360
    Correct
    Wrong
  • 2
    5040
    Correct
    Wrong
  • 3
    720
    Correct
    Wrong
  • 4
    1080
    Correct
    Wrong
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Answer : 2. "5040"
Explanation :

Answer: B) 5040 Explanation: Given word is GLACIOUS has 8 letters. => C is fixed in one of the 8 places Then, the remaining 7 letters can be arranged in 7! ways = 5040.

Q: Which of the following is not soluble in water? 2104 0

  • 1
    copper(II) hydroxide
    Correct
    Wrong
  • 2
    sodium chloride
    Correct
    Wrong
  • 3
    silver nitrate
    Correct
    Wrong
  • 4
    potassium sulfate
    Correct
    Wrong
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Answer : 1. "copper(II) hydroxide"
Explanation :

Answer: A) copper(II) hydroxide Explanation: Sodium chloride: The solubility rules tell you that all halides are soluble with the exception of those formed with siver, mercury, and lead ions. Since this is not the case here, sodium chloride will be soluble.   Silver nitrate: It is soluble because all nitrates are soluble, without exception.   Potassium sulfate: It is soluble because all sulfates are soluble with the exception of those formed with silver, calcium, barium, mercury, lead, and strontium ions.   Copper (II) hydroxyde: It is insoluble because all hydroxides are insoluble with the exception of those formed with alkali metal ions and barium.

Q: Kamal consistently runs 240 meters a day and on Saturday he runs for 400 meters. How many kilometers will he have to run in four weeks ? 2100 0

  • 1
    5.75 kms
    Correct
    Wrong
  • 2
    7.36 kms
    Correct
    Wrong
  • 3
    8.2 kms
    Correct
    Wrong
  • 4
    6.98 kms
    Correct
    Wrong
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Answer : 2. "7.36 kms"
Explanation :

Answer: B) 7.36 kms Explanation: Total running distance in four weeks = (24 x 240) + (4 x 400) = 5760 + 1600 = 7360 meters = 7360/1000 => 7.36 kms

Q: Rajeev's age after 15 years will be 5 times his age 5 years back. What is the present age of rajeev? 2096 0

  • 1
    12
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    22
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 4. "10"
Explanation :

Answer: D) 10 Explanation: Let Rajeev's present age be  x years. Rajeev's age after 15 years = (x + 15) years. Rajeev's age 5 years back = (x - 5) years Then ATQ,  x + 15 = 5 (x - 5) x + 15 = 5x - 25 => x = 10   Hence, Rajeev's present age = x = 10 years.

Q: Which of the following is the lightest metal? 2094 0

  • 1
    Lithium
    Correct
    Wrong
  • 2
    Silver
    Correct
    Wrong
  • 3
    Mercury
    Correct
    Wrong
  • 4
    Lead
    Correct
    Wrong
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Answer : 1. "Lithium"
Explanation :

Answer: A) Lithium Explanation: Lithium is the lightest metal and the lightest solid element. It is a soft, silvery-white alkali metal. Under standard conditions. Like all alkali metals, lithium is highly reactive and flammable and is stored in mineral oil.

Q: Which of the following is generally true about the stratosphere? 2091 0

  • 1
    It is very dry
    Correct
    Wrong
  • 2
    It is very moist
    Correct
    Wrong
  • 3
    The dryness level varies with the season
    Correct
    Wrong
  • 4
    The dryness level varies with the moon cycle
    Correct
    Wrong
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Answer : 1. "It is very dry"
Explanation :

Answer: A) It is very dry Explanation: The stratosphere layer of the atmosphere is very dry.

Q: Here are some words translated from an artificial language. briftamint means 'militant'uftonel means 'occupied'uftonalene means 'occupation' Which word could mean "Occupant"? 2090 0

  • 1
    elamint
    Correct
    Wrong
  • 2
    briftalene
    Correct
    Wrong
  • 3
    uftonamint
    Correct
    Wrong
  • 4
    elbrifta
    Correct
    Wrong
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Answer : 3. "uftonamint"
Explanation :

Answer: C) uftonamint Explanation: Brift means the root word mili; the suffix amint means the same as the English suffix –tant; the root word ufton– means occupy; el means the suffix –ied of occupied; and alene means the suffix –tion. (Because ufton means occupy, choices a, b, and d can be easily ruled out.)

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