IIT JEE Practice Question and Answer

Q: India has successfully test-fired the BrahMos supersonic cruise missile from Indian Air Force ___________ fighter aircraft for the first time. 1188 0

  • 1
    Sukhoi-29 MKI
    Correct
    Wrong
  • 2
    Sukhoi-32 MKI
    Correct
    Wrong
  • 3
    Sukhoi-31 MKI
    Correct
    Wrong
  • 4
    Sukhoi-30 MKI
    Correct
    Wrong
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Answer : 4. "Sukhoi-30 MKI"
Explanation :

Answer: D) Sukhoi-30 MKI Explanation: Brahmos, the world’s fastest supersonic cruise missile created history on today after it was successfully flight- tested for the first time from the IAF’s frontline fighter aircraft Sukhoi-30MKI against a sea-based target in the Bay of Bengal. The armed forces are now capable of launching the Brahmos, which has a strike range of around 290 km and is described as the world’s fastest supersonic cruise missile, from land, sea and air, completing the tactical cruise missile triad for the country.

Q: A man can row upstream at 16 km/hr and downstream at 24 km/hr. Find the speed of the current. 1847 0

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

Answer: A) 4 kmph Explanation: Speed of the current = 24-16/2 = 8/2 = 4 km/hr.

Q: If (89)2 is added to the square of a number, the answer so obtained is 16202. What is the (1/26) of that number? 3276 0

  • 1
    5.65
    Correct
    Wrong
  • 2
    2.7
    Correct
    Wrong
  • 3
    3.5
    Correct
    Wrong
  • 4
    6.66
    Correct
    Wrong
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Answer : 3. "3.5"
Explanation :

Answer: C) 3.5 Explanation: Let the number is = x (89)2 + x2 = 16202 x2 = 8281 x = 91 => (1/26) of 91 = 3.5

Q: In which city Indian Railways has installed Asia’s largest Solid State Interlocking (SSI) system? 1347 0

  • 1
    Kolkata
    Correct
    Wrong
  • 2
    Lucknow
    Correct
    Wrong
  • 3
    Hyderabad
    Correct
    Wrong
  • 4
    Kharagpur
    Correct
    Wrong
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Answer : 4. "Kharagpur"
Explanation :

Answer: D) Kharagpur Explanation:

Q: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 2007 0

  • 1
    16
    Correct
    Wrong
  • 2
    18
    Correct
    Wrong
  • 3
    19
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
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Answer : 2. "18"
Explanation :

Answer: B) 18 Explanation: Clearly total persons are increased in  28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.

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 1185 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)

Q: _________ is a specialized server that enables the client to share application and data across the network. 1920 4

  • 1
    Mass Server
    Correct
    Wrong
  • 2
    File server
    Correct
    Wrong
  • 3
    Data Server
    Correct
    Wrong
  • 4
    Host Server
    Correct
    Wrong
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Answer : 2. "File server"
Explanation :

Answer: B) File server Explanation:

Q: If 2 men and 3 women can do a piece of work in 8 days and 3 men and 2 women in 7 days. In how many days can the work be done by 5 men and 4 women working together? 1470 0

  • 1
    3 days
    Correct
    Wrong
  • 2
    6 days
    Correct
    Wrong
  • 3
    4 days
    Correct
    Wrong
  • 4
    2 days
    Correct
    Wrong
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Answer : 3. "4 days"
Explanation :

Answer: C) 4 days Explanation: From the given data, => (2 M + 3W) 8 = (3M + 2W)7 => 16M + 24W = 21M + 14 W => 10W = 5M => 2W = M => 14W × ? = 7W × 8 ? = 4 days

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