GATE Practice Question and Answer

Q: CTRL + ] is used for 1831 0

  • 1
    Re-do
    Correct
    Wrong
  • 2
    Right align text
    Correct
    Wrong
  • 3
    Increase in font size
    Correct
    Wrong
  • 4
    Expand or collapse the ribbon
    Correct
    Wrong
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Answer : 3. "Increase in font size"
Explanation :

Answer: C) Increase in font size Explanation: CTRL + ] is a computer shortcut and is used for Increase in font size.   Shortcuts : Re-do ---- Ctrl + Y Right align text ---- Ctrl + R Expand or collapse the ribbon ---- Ctrl + F1

Q: Which of the following is a Decomposition Reaction? 1831 0

  • 1
    2HgO ----> 2Hg + O2
    Correct
    Wrong
  • 2
    6NaNO3 ----> 6NaNO2 + 3O2
    Correct
    Wrong
  • 3
    ZnCO3 ----> ZnO + CO2
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: All the given reactions are Decomposition reactions. Decomposition reaction is a reaction in which only one reactant is splitted into two or more products.

Q: The average of the ages of Sushanth, Krish and Rishi is 43 years and the average of the ages of Sushanth, Rishi and Rohit is 49 years. If Rohit is 54 years old, what is Krish's age ? 1830 0

  • 1
    34 years
    Correct
    Wrong
  • 2
    26 years
    Correct
    Wrong
  • 3
    24 years
    Correct
    Wrong
  • 4
    36 years
    Correct
    Wrong
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Answer : 4. "36 years"
Explanation :

Answer: D) 36 years Explanation: Let present ages of Sushanth = w, Krish = x, Rishi = y and Rohit = z , thenw + x + y = 43 x 3 = 129 ---(i) andw + y + z = 49 x 3 = 147 ---(ii)Subtracting (i) from (ii), (w+y+z) - (w+x+y) = 147 - 129 , z - x = 18 ---(iii)Given Rohit's age=z=54, so from (iii), x = 54 - 18 = 36.Therefore, Krish age is 36 years.

Q: If J is the interest on K and K is the interest on L, the rate and time is the same on both the cases. What is the relation between J, K and L  ? 1830 0

  • 1
    J x J = KL
    Correct
    Wrong
  • 2
    K x K= JL
    Correct
    Wrong
  • 3
    L x L = JK
    Correct
    Wrong
  • 4
    JKL = 1
    Correct
    Wrong
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Answer : 2. "K x K= JL"
Explanation :

Answer: B) K x K= JL Explanation: Let the Time be 'N' and Rate be 'R'  J = (K x NR)/100 K = (L x NR)/100  J/K = NR/100 K/L = NR/100  J/K = K/L  K x K = JL

Q: Find the Next Number in the given number series? 3, 10.5, 36.75, 128.625, ? 1829 0

  • 1
    450.187
    Correct
    Wrong
  • 2
    442.151
    Correct
    Wrong
  • 3
    441.231
    Correct
    Wrong
  • 4
    456.852
    Correct
    Wrong
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Answer : 1. "450.187"
Explanation :

Answer: A) 450.187 Explanation: Pattern is 3 3 x 3.5 = 10.5 10.5 x 3.5 = 36.75 36.75 x 3.5 = 128.625 128.625 x 3.5 = 450.187

Q: Who has become the 1st woman player from Jharkhand who has been awarded Dhyan Chand Award 2017  ? 1828 0

  • 1
    Poonam Rani
    Correct
    Wrong
  • 2
    Samurai Tete
    Correct
    Wrong
  • 3
    Monika Malik
    Correct
    Wrong
  • 4
    Navjot Kaur
    Correct
    Wrong
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Answer : 2. "Samurai Tete"
Explanation :

Answer: B) Samurai Tete Explanation: The Apex body for The national sport Hockey India pitched Jharkhand's Samurai Tete, former Team India skipper, for the Dhyan Chand Lifetime Achievement Award 2016. Sumrai Tete is a member of the India women's national field hockey team. She played with the team when it won the Gold at the Manchester 2002 Commonwealth Games.

Q: Which one of the following is not a prime number? 1828 0

  • 1
    91
    Correct
    Wrong
  • 2
    71
    Correct
    Wrong
  • 3
    41
    Correct
    Wrong
  • 4
    31
    Correct
    Wrong
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Answer : 1. "91"
Explanation :

Answer: A) 91 Explanation: Prime Numbers :: Numbers which are divisible by only 1 and itself are Prime Numbers.   It's answer will be 91. Because 91 can be divisible by 7,13,91,1. It is quite clear that prime number should be divisible only by itself and by 1.

Q: DNA is made of repeating units called 1827 0

  • 1
    Nucleotides
    Correct
    Wrong
  • 2
    Ribozomes
    Correct
    Wrong
  • 3
    Peptides
    Correct
    Wrong
  • 4
    Aminoacids
    Correct
    Wrong
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Answer : 1. "Nucleotides"
Explanation :

Answer: A) Nucleotides Explanation: DNA is a very long chain polymer made up of thousands of repeating units called nucleotides.   Nucleotide Unit is composed of a phosphate group, a pentose sugar, and a nitrogenous base.   The sides of the DNA ladder are made up of alternating deoxyribose sugar -- phosphate group units.

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