GATE Practice Question and Answer

Q: Madhu got 32% of the maximum marks in a Bank examination and failed by 8 marks. However, Kumar who took the same examination got 42% of the total marks and got 16 marks more than the cut-off marks. What was the cut-off marks in the examination ? 1913 0

  • 1
    76.8
    Correct
    Wrong
  • 2
    86.8
    Correct
    Wrong
  • 3
    78.8
    Correct
    Wrong
  • 4
    84.8
    Correct
    Wrong
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Answer : 4. "84.8"
Explanation :

Answer: D) 84.8 Explanation: Let 'M' be the maximum marks in the examination. Therefore, Madhu got 32% of M = 32M/100 = 0.32MAnd Kumar got 42% of M = 42M/100 = 0.42M.In terms of the maximum marks Kumar got 0.42M - 0.32M = 0.1M more than Madhu. ---- (1) The problem however, states that Kumar got 16 marks more than the cut-off mark and Madhu got 8 marks less than the cut-off mark. Therefore, Kumar has got 16 + 8 = 24 marks more than Madhu. ---- (2) Now, Equating (1) and (2), we get0.1M = 24 => M = 24/0.1 = 240'M' is the maximum mark and is equal to 240 marks.We know that Madhu got 32% of the maximum marks.Therefore, Madhu got 32 x 240/100 = 76.8 marks.We also know that Madhu got 8 marks less than the cut-off marks. Therefore, the cut-off marks will be 8 marks more than what Madhu got = 76.8 + 8 = 84.8.

Q: By investing Rs. 1620 in 8% stock, Michael earns Rs. 135. The stock is then quoted at ? 1913 0

  • 1
    Rs. 145
    Correct
    Wrong
  • 2
    Rs. 245.1
    Correct
    Wrong
  • 3
    Rs. 96
    Correct
    Wrong
  • 4
    Rs. 75
    Correct
    Wrong
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Answer : 3. "Rs. 96"
Explanation :

Answer: C) Rs. 96 Explanation: Michel earns Rs. 135 by investing Rs. 1620To earn Rs. 8 how much he have to invest...? = (8 x 1620)/135 = Rs. 96

Q: There is a clock which shows false timing ie it shows 20 minutes less for each 1 hour. If the clock shows 12 noon now how many minutes will be lost when it shows 2 pm ? 1913 0

  • 1
    36 minutes
    Correct
    Wrong
  • 2
    48 minutes
    Correct
    Wrong
  • 3
    35 minutes
    Correct
    Wrong
  • 4
    60 minutes
    Correct
    Wrong
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Answer : 4. "60 minutes"
Explanation :

Answer: D) 60 minutes Explanation: For 1 hour, 20 minutes is slower, then for 06 miuntes - 2 minutes is slower30 minutes - 10 minutesActual time | false time 12 12 01 PM 12:40 PM (20 minutes slower) 02 PM 01:20 PM 03 PM 02:00 PM So, when actual time is 3pm, the false time is 2 pm.So, it loses 60 minutes when it shows 2 pm.

Q: Which of the following is a Decomposition Reaction? 1912 0

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    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: Which of the following is not a compound? 1912 0

  • 1
    Brass
    Correct
    Wrong
  • 2
    Quick lime
    Correct
    Wrong
  • 3
    Marble
    Correct
    Wrong
  • 4
    Soda ash
    Correct
    Wrong
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Answer : 1. "Brass"
Explanation :

Answer: A) Brass Explanation: Among the given options Brass is not a compound. Since it is an alloy, it is a mixture.    The smallest part of a compound is called a molecule. It has a unique composition that is always the same. Compound is a substance that consists of two or more elements.

Q: which is a best way to measure Ground Distance? 1912 0

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Answer :
Explanation :

Pace Count is a way to measure to Ground Distance. Pace Count is nothing but regular single natural step of about 30 inches long.

Q: Whale : Mammal :: Rat : ? 1911 0

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    Rodent
    Correct
    Wrong
  • 2
    Mammal
    Correct
    Wrong
  • 3
    Amphibian
    Correct
    Wrong
  • 4
    Reptile
    Correct
    Wrong
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Answer : 1. "Rodent"
Explanation :

Answer: A) Rodent Explanation: Whale belongs to Mammal category whereas Rat belongs to Rodent.

Q: Square units 13 by 9 of an office area is 1910 0

  • 1
    97
    Correct
    Wrong
  • 2
    117
    Correct
    Wrong
  • 3
    107
    Correct
    Wrong
  • 4
    127
    Correct
    Wrong
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Answer : 2. "117"
Explanation :

Answer: B) 117 Explanation: Square units 13 by 9 of an office means office of length 13 units and breadth 9 units.   Now its area is 13x 9 = 117 square units or units square.

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