IIT JEE Practice Question and Answer

Q: Find which of the two conclusions I and II given below is/are definitely true from the the given statements.   Statements: I > W > T > N, I = F = G = C   Conclusions:    I. W > I                                           II. C > N 1038 0

  • 1
    Only Conclusion I is true
    Correct
    Wrong
  • 2
    Only Conclusion II is true
    Correct
    Wrong
  • 3
    Both conclusions I & II are true
    Correct
    Wrong
  • 4
    Neither conclusion I nor II is true
    Correct
    Wrong
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Answer : 2. "Only Conclusion II is true"
Explanation :

Answer: B) Only Conclusion II is true Explanation: From the given Statements :   1. I > W > T > N  2. F = G = C  Conclusions are :   I. W > I (False)  II. C > N (True)

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Answer :
Explanation :

From given data, (C.P. of 17 balls) - (S.P. of 17 balls) = (C.P. of 5 balls) C.P. of 12 balls = S.P. of 17 balls = Rs.720. Hence, C.P. of 1 ball = Rs.720/12 = Rs. 60.

Q: Guess the Number missed in Number Challenge ? 1037 0

  • 1
    3
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 2. "5"
Explanation :

Answer: B) 5 Explanation: Sum of numbers in all individual boxes must be equal. Here sum must be equal to 30. => x + 14 + 9 + 2 = 30 => x = 5.

Q: Which of the following team has won the 37th and final edition of the Hockey Champions Trophy at Breda, the Netherlands? 1037 0

  • 1
    India
    Correct
    Wrong
  • 2
    Australia
    Correct
    Wrong
  • 3
    Brazil
    Correct
    Wrong
  • 4
    The Netherlands
    Correct
    Wrong
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Answer : 2. "Australia"
Explanation :

Answer: B) Australia Explanation: In the summit clash of the 37th and final edition of the Hockey Champions Trophy at Breda, the Netherlands, India lost to defending champions Australia via penalty shoot-off. The match went into the shoot-off after both the teams were locked at 1-1 in regulation time.

Q: The compound interest on Rs. 8000 for 3 year at 10% p.a. is 1036 0

  • 1
    2648
    Correct
    Wrong
  • 2
    2145
    Correct
    Wrong
  • 3
    2587
    Correct
    Wrong
  • 4
    2784
    Correct
    Wrong
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Answer : 1. "2648"
Explanation :

Answer: A) 2648 Explanation: 8000 × 33.1% = 2648

Q: Two dice are rolled simultaneously. Find the probability of getting the sum of numbers on the on the two faces divisible by 3 or 4? 1035 0

  • 1
    3/7
    Correct
    Wrong
  • 2
    7/11
    Correct
    Wrong
  • 3
    5/9
    Correct
    Wrong
  • 4
    6/13
    Correct
    Wrong
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Answer : 3. "5/9"
Explanation :

Answer: C) 5/9 Explanation: Here n(S) = 6 x 6 = 36 E={(1,2),(1,5),(2,1),(2,4),(3,3),(3,6),(4,2),(4,5),(5,1),(5,4),(6,3) ,(6,6),(1,3),(2,2),(2,6),(3,1),(3,5), (4,4),(5,3),(6,2)} => n(E)=20 Required Probability n(P) = n(E)/n(S) = 20/36 = 5/9.

Q: Which Bank has made online transactions through RTGS and NEFT free of cost from November 1? 1035 0

  • 1
    HDFC Bank
    Correct
    Wrong
  • 2
    Karur Vysya Bank
    Correct
    Wrong
  • 3
    ICICI Bank
    Correct
    Wrong
  • 4
    SBI Bank
    Correct
    Wrong
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Answer : 1. "HDFC Bank"
Explanation :

Answer: A) HDFC Bank Explanation: Private sector lender HDFC Bank has made online fund transfer through RTGS (Real Time Gross Settlement) and NEFT (National Electronic Funds Transfer) free with effect from November 1, with an aim to promote digital economy. According to the revised charges, customers of savings and salary accounts of HDFC Bank will not have to pay any charge for transferring funds online using its RTGS and NEFT facilities.

Q: A train travelling at 48 kmph crosses another train, having half its length and travelling in opposite direction at 42 kmph, in 12 sec. It also covers a bridge in 45 sec. Find the length of the bridge ? 1034 0

  • 1
    250 mts
    Correct
    Wrong
  • 2
    400 mts
    Correct
    Wrong
  • 3
    320 mts
    Correct
    Wrong
  • 4
    390 mts
    Correct
    Wrong
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Answer : 2. "400 mts"
Explanation :

Answer: B) 400 mts Explanation: Let the length of the 1st train = L mts Speed of 1st train = 48 kmph Now the length of the 2nd train = L/2 mts Speed of 2nd train = 42 kmph Let the length of the bridge = D mts Distance = L + L/2 = 3L/2 Relative speed = 48 + 42 = 90 kmph = 90 x 5/18 = 25 m/s(opposite) Time = 12 sec => 3L/2x25 = 12 => L = 200 mts Now it covers the bridge in 45 sec => distance = D + 200 Time = 45 sec Speed = 48 x5/18 = 40/3 m/s => D + 200/(40/3) = 45 => D = 600 - 200 = 400 mts Hence, the length of the bridge = 400 mts.

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