IIT JEE Practice Question and Answer

Q: In 1990 a person is 15 years old. In 2000 that same person is 5 years old. How can this be possible? 1720 0

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Answer :
Explanation :

It can be possible in only B.C. i.e, Before Christ. That was about 2000 years ago. Given In 1990 B.C = 2000 + 1990 = 3990 years ago, a person is 15 years Old => In 1995 B.C = 2000 + 1995 = 3995 years ago, the same person will be 10 years Old Therefore, In 2000 B.C = 2000 + 2000 = 4000 years ago, the same person will be 5 years Old.

Q: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1719 0

  • 1
    2 hrs 50 min
    Correct
    Wrong
  • 2
    3 hrs 25 min
    Correct
    Wrong
  • 3
    3 hrs
    Correct
    Wrong
  • 4
    2 hrs 5 min
    Correct
    Wrong
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Answer : 3. "3 hrs"
Explanation :

Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.

Q: Solve the MathPuzzle Challenge ? 1718 0

  • 1
    4!
    Correct
    Wrong
  • 2
    5!
    Correct
    Wrong
  • 3
    6!
    Correct
    Wrong
  • 4
    Can't be determined
    Correct
    Wrong
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Answer : 4. "Can't be determined"
Explanation :

Answer: D) Can't be determined Explanation: NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions. And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions. Therefore, Can't be determined.

Q: Internet was started in India on ? 1718 0

  • 1
    8 August,1994
    Correct
    Wrong
  • 2
    15 August,1995
    Correct
    Wrong
  • 3
    9 August,1995
    Correct
    Wrong
  • 4
    7 August,1996
    Correct
    Wrong
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Answer : 2. "15 August,1995"
Explanation :

Answer: B) 15 August,1995 Explanation:

Q: Compared to land, the open oceans 1718 0

  • 1
    are rich in silica and iron
    Correct
    Wrong
  • 2
    are nutrient-poor environments
    Correct
    Wrong
  • 3
    contain unlimited nitrogen
    Correct
    Wrong
  • 4
    are nutrient-rich environments
    Correct
    Wrong
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Answer : 2. "are nutrient-poor environments"
Explanation :

Answer: B) are nutrient-poor environments Explanation:

Q: The difference between two numbers is 3355. When the larger number is divided by the smaller one, the quotient is 6 and the remainder is 15. The smaller number and larger number respectively ? 1718 0

  • 1
    546, 3901
    Correct
    Wrong
  • 2
    415, 3770
    Correct
    Wrong
  • 3
    668, 4023
    Correct
    Wrong
  • 4
    404, 3759
    Correct
    Wrong
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Answer : 3. "668, 4023"
Explanation :

Answer: C) 668, 4023 Explanation: Let the smaller number be k.Then, larger number = (3355 + k)Therefore 3355 + k = (6k + 15)‹=› 5k = 3340‹=› k = 668. Therefore, the smaller number k = 668 and now the larger number = 3355+668 = 4023.

Q: Guess the Missing number in the Number Challenge ? 1716 0

  • 1
    8
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    44
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
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Answer : 4. "64"
Explanation :

Answer: D) 64 Explanation: The logic in the challenge is  81x6 = 9x6 = 54 144x7=84     Similarly, 64x8 = 8x8 = 64.

Q: Who is the present Attorney General of India? 1715 0

  • 1
    K.K. Venugopal
    Correct
    Wrong
  • 2
    Mukul Rohatgi
    Correct
    Wrong
  • 3
    Ranjit Kumar
    Correct
    Wrong
  • 4
    P. P. Malhotra
    Correct
    Wrong
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Answer : 1. "K.K. Venugopal"
Explanation :

Answer: A) K.K. Venugopal Explanation: K.K. Venugopal is the new Attorney General of India since 2017. Kottayan Katankot Venugopal, known generally to us as K. K. Venugopal is an eminent Indian constitutional lawyer and a senior advocate in the Supreme Court of India. He was preceded by Mukul Rohatgi.

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