IIT JEE Practice Question and Answer

Q: What is the first step when supervising detainee operations? 1766 0

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Answer :
Explanation :

The first step is to disarm and secure detainees when supervising detainee operations.

Q: An implied power is one that 1766 0

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Answer :
Explanation :

Implied powers are powers of U.S. government which have not been explicitly granted by the Constitution but that is implied by the necessary and proper clause to be delegated for the purpose of carrying out the enumerated powers.

Q: The average age of 80 boys in a class is 15. The average age of group of 15 boys in the class is 16 and the average of another 25 boys in the class is 14. What is the average age of the remaining boys in the class ? 1765 0

  • 1
    12.24 yrs
    Correct
    Wrong
  • 2
    13.25 yrs
    Correct
    Wrong
  • 3
    16 yrs
    Correct
    Wrong
  • 4
    15.25 yrs
    Correct
    Wrong
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Answer : 4. "15.25 yrs"
Explanation :

Answer: D) 15.25 yrs Explanation: Total ages of 80 boys = 15 x 80 = 1200 yrs.Total age of 16 boys = 15 x 16 = 240 yrsTotal age of 25 boys = 14 x 25 = 350 yrs.Average age of remaining boys = 1200 - (240+350) / 80 - (25+15) = 610/41 = 15.25 yrs.

Q: A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in  ? 1765 0

  • 1
    8 hrs
    Correct
    Wrong
  • 2
    12 hrs
    Correct
    Wrong
  • 3
    6 hrs
    Correct
    Wrong
  • 4
    4 hrs
    Correct
    Wrong
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Answer : 3. "6 hrs"
Explanation :

Answer: C) 6 hrs Explanation: Suppose A, B and C take x, x/2 and x/3 respectively to finish the work.  Then, (1/x + 2/x + 3/x) = 1/2  => 6/x = 1/2      => x = 12  So, B takes 6 hours to finish the work.

Q: Who got the ‘Transformative Chief Minister Award’ in USIBC in 2017 ? 1764 0

  • 1
    Mr. Vijay Singh
    Correct
    Wrong
  • 2
    Mr. Suresh Babu
    Correct
    Wrong
  • 3
    Mr.Chandrababu Naidu
    Correct
    Wrong
  • 4
    Mr. Achuathanan
    Correct
    Wrong
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Answer : 3. "Mr.Chandrababu Naidu"
Explanation :

Answer: C) Mr.Chandrababu Naidu Explanation: Andhra Pradesh Chief Minister Chandrababu Naidu has been selected for the  'Transformative Chief Minister Award 2017' in recognition for his role in advancing the US-India partnership at the state level.   ii. The award by the US-India Business Council (USIBC) would be presented to Mr. Naidu during the USIBC West Coast Summit in Bengaluru (the Silicon Valley) on May 8.     iii. Last year’s recipient of this award was Amitabh Kant, CEO of Niti Aayog.

Q: What is a Common Multiple? 1764 0

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Answer :
Explanation :

If the Multiples for two or more numbers which are Common, then those Multiples are said to be Common Multiples.    For Example : Multiples of 3 are 3, 6, 9, 12, 15, 18, 21, 24, 27, 30,... Multiples of 5 are 5, 10, 15, 20, 25, 30,... Here common multiples of 3 & 5 upto 30 are 15, 30.

Q: Which process removes carbon dioxide from the atmosphere? 1763 0

  • 1
    Combustion
    Correct
    Wrong
  • 2
    Photosynthesis
    Correct
    Wrong
  • 3
    Respiration
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 2. "Photosynthesis"
Explanation :

Answer: B) Photosynthesis Explanation: Photosynthesis process removes carbon dioxide from the atmosphere. Green plants remove carbon dioxide from the atmosphere by photosynthesis.  The level of carbon dioxide in the atmosphere is maintained by several processes, including photosynthesis, respiration and combustion.

Q: What time will it be in 8 hours? 1763 0

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Answer :
Explanation :

For exampe if it is 12:45 AM, then after 8 hours the time is  12 hrs 45 min + 8 hrs = 8 : 45 PM in the night on the same day.

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