GATE Practice Question and Answer

Q: Which of the following is a Heterogeneous Mixture? 2831 0

  • 1
    Air
    Correct
    Wrong
  • 2
    Table salt
    Correct
    Wrong
  • 3
    Soda
    Correct
    Wrong
  • 4
    Brass
    Correct
    Wrong
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Answer : 3. "Soda"
Explanation :

Answer: C) Soda Explanation: Here Soda is a Heterogenous Mixture.   A Heterogeneous Mixture is a mixture having a non-uniform composition i.e, the mixture contains components in different phases. Using various means, the parts in the mixture can be separated from one another.

Q: If two is subtracted from each odd digit and three is added to each even digit in the number 94257636, how many digits will appear twice in the new number thus formed ? 2830 0

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

Answer: D) 3 Explanation: Here 5, 7 & 9 are repeating after modulation.

Q: If log72 = m, then log4928 is equal to ? 2828 0

  • 1
    1/(1+2m)
    Correct
    Wrong
  • 2
    (1+2m)/2
    Correct
    Wrong
  • 3
    2m/(2m+1)
    Correct
    Wrong
  • 4
    (2m+1)/2m
    Correct
    Wrong
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Answer : 2. "(1+2m)/2"
Explanation :

Answer: B) (1+2m)/2 Explanation: log4928 = 12log77×4   = 12+122log72= 12+log72= 12 + m= 1+2m2.

Q: मेरे पैर हैं, लेकिन मैं चल नहीं सकता। मैं कौन हूँ? 2823 0

  • 1
    ड्रैगनफलीज़
    Correct
    Wrong
  • 2
    झींगे
    Correct
    Wrong
  • 3
    हाउसफलीज़
    Correct
    Wrong
  • 4
    उपरोक्त सभी
    Correct
    Wrong
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Answer : 1. "ड्रैगनफलीज़"
Explanation :

Answer: A) Dragonflies व्याख्या: Dragonflies के पैर होते हैं लेकिन वे चल नहीं सकते।

Q: An employee may claim Rs. 7.00 for each km when he travels by taxi and Rs. 6.00 for each km if he drives his own car. If in one week he claimed Rs. 595 for traveling 90 km. How many kms did he travel by taxi ? 2822 0

  • 1
    55 kms
    Correct
    Wrong
  • 2
    35 kms
    Correct
    Wrong
  • 3
    25 kms
    Correct
    Wrong
  • 4
    65 kms
    Correct
    Wrong
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Answer : 1. "55 kms"
Explanation :

Answer: A) 55 kms Explanation: Let x and y be the respective km's travelled by man via taxi and by his own car.Given x + y = 90 => x = 90 - yBut according to the question,7x + 6y = 5957(90-y) + 6y = 595=> 630 - 7y + 6y = 595=> y = 630 - 595 = 35=> x = 90 - 35 = 55Therefore, the distance travelled by taxi is 55 kms.

Q: Size of the primary memory of a pc ranges between 2822 0

  • 1
    256 kb to 640 kb
    Correct
    Wrong
  • 2
    64 kb to 256 kb
    Correct
    Wrong
  • 3
    256 kb to 512 kb
    Correct
    Wrong
  • 4
    2 kb to 8 kb
    Correct
    Wrong
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Answer : 1. "256 kb to 640 kb"
Explanation :

Answer: A) 256 kb to 640 kb Explanation: Size of the primary memory of a PC ranges between 256 KB to 640 KB.

Q: That which cannot be corrected 2821 0

  • 1
    Incorrigible
    Correct
    Wrong
  • 2
    Illegible
    Correct
    Wrong
  • 3
    Illegal
    Correct
    Wrong
  • 4
    Indelible
    Correct
    Wrong
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Answer : 1. "Incorrigible"
Explanation :

Answer: A) Incorrigible Explanation: The One-word substitute for That which cannot be corrected is Incorrigible.

Q: A F Z U G L T _  Find the next letter in the above given letter series? 2818 0

  • 1
    K
    Correct
    Wrong
  • 2
    M
    Correct
    Wrong
  • 3
    O
    Correct
    Wrong
  • 4
    Q
    Correct
    Wrong
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Answer : 3. "O"
Explanation :

Answer: C) O Explanation: Given series is A F Z U G L T _ Starts with A A + 5 letters = F go to end of alphabet= Z Z - 5 letters = U from F go one more to G + 5 letters = L from U go one back to U, T - 5 letters = O   Second Method :: Change the letters to their corresponding number. A=1 B=2 C=3 ... Z=26 A F Z U G L T _ 1 6 26 21 7 12 20 ? Look at the pattern: the 1st and 3rd numbers = 27, 1+26 the 2nd and 4th numbers = 27, 6+21 the 5th and 7th numbers = 27, so the 6 and 8th would also equal 27. 27 - 12 = 15, so the letter is O.

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