IIT JEE Practice Question and Answer

Q: The ratio of efficiencies of P, Q and R is 2 : 3 : 4. While P and R work on alternate days and Q work for all days. Now the work completed in total 10 days and the total amount they get is Rs. 1200. Find the amount of each person(respectively). 2350 0

  • 1
    200, 600, 400
    Correct
    Wrong
  • 2
    400, 600, 200
    Correct
    Wrong
  • 3
    600, 200, 400
    Correct
    Wrong
  • 4
    400, 200, 600
    Correct
    Wrong
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Answer : 1. "200, 600, 400"
Explanation :

Answer: A) 200, 600, 400 Explanation: Ratio of efficiencies of P, Q and R = 2 : 3 : 4 From the given data, Number of working days of P, Q, R = 5 : 10 : 5 Hence, ratio of amount of p, Q, R = 2x5 : 3x10 : 4x5 = 10 : 30 : 20 Amounts of P, Q, R = 200, 600 and 400.

Q: Oar is to rowboat as foot is to 2350 0

  • 1
    Walk
    Correct
    Wrong
  • 2
    Loafers
    Correct
    Wrong
  • 3
    Skateboard
    Correct
    Wrong
  • 4
    Running
    Correct
    Wrong
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Answer : 3. "Skateboard"
Explanation :

Answer: C) Skateboard Explanation: A rowboat can be put into motion by using oar. Similaarly, a skateboard can be put into motion by using foot. The other options like walk and running are not objects to be in motion. And loafers are something worn on foot.   Hence, Oar : Rowboat :: Foot : Skateboard.

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Answer : 4. "None of the statements is required"
Explanation :

Answer: D) None of the statements is required Explanation: From the given data, (60 - 45)% = 12.5 + 415% = 16.5=> 100% = ?100% = 16.5 x 100/15 = 110 Hence, P = 45% of 110 = 45x110/100 = 49.5 Q = 50% of 110 = 55R = 60% of 110 = 60 x 110/100 = 66M = 12.5 + 49.5 = 62 or 66 - 4 = 62   Hence, no statement is required to answer.

Q: 2.5, 3.5, 9, 40, ? Find the next number in the above-given series? 2349 0

  • 1
    316
    Correct
    Wrong
  • 2
    328
    Correct
    Wrong
  • 3
    323
    Correct
    Wrong
  • 4
    340
    Correct
    Wrong
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Answer : 2. "328"
Explanation :

Answer: B) 328 Explanation: 2.5 × 1 + 1 = 3.5 3.5 × 2 + 2 = 9 9 × 4 + 4 = 40 40 × 8 + 8 = 328

Q: The sum of three consecutive odd numbers is 93. What is the middle number? 2348 0

  • 1
    31
    Correct
    Wrong
  • 2
    33
    Correct
    Wrong
  • 3
    29
    Correct
    Wrong
  • 4
    27
    Correct
    Wrong
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Answer : 1. "31"
Explanation :

Answer: A) 31 Explanation: Let the three consecutive odd numbers be x, x+2, x+4 Then, x + x + 2 + x + 4 = 93 => 3x + 6 = 93 => 3x = 87 => x = 29 => 29, 31, 33 are three consecutive odd numbers.   Therefore, the middle number is 31.

Q: kuchipudi belongs to which state 2348 0

  • 1
    Telangana
    Correct
    Wrong
  • 2
    Tamilnadu
    Correct
    Wrong
  • 3
    Andhra Pradesh
    Correct
    Wrong
  • 4
    Kerala
    Correct
    Wrong
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Answer : 3. "Andhra Pradesh"
Explanation :

Answer: C) Andhra Pradesh Explanation: Kuchipudi is a dance-drama performance, with its roots in the ancient Hindu Sanskrit text of Natya Shastra.  It originated in a village named Kuchipudi in the Indian state of Andhra Pradesh. Kuchipudi is also known as Kuchelapuram or Kuchilapuri in Krishna district of Andhra Pradesh.

Q: Plants that grow in Saline Water are called 2347 1

  • 1
    Sciophytes
    Correct
    Wrong
  • 2
    Bryophytes
    Correct
    Wrong
  • 3
    Halophytes
    Correct
    Wrong
  • 4
    Hydrophytes
    Correct
    Wrong
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Answer : 3. "Halophytes"
Explanation :

Answer: C) Halophytes Explanation: Plants that grow in Saline Water are called Halophytes.

Q: Where is it legal to tie up your boat? 2347 0

  • 1
    to a lighted buoy
    Correct
    Wrong
  • 2
    to a mooring buoy
    Correct
    Wrong
  • 3
    to a non-lateral marker
    Correct
    Wrong
  • 4
    to a safe water marker
    Correct
    Wrong
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Answer : 2. "to a mooring buoy"
Explanation :

Answer: B) to a mooring buoy Explanation: Mooring buoy are white with a blue horizontal band. They usually are placed in marinas and other areas where boats are allowed to anchor. These are the only buoys you may tie up to legally.

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