IIT JEE Practice Question and Answer

Q: In general, which is the cause of a land breeze? 1267 0

  • 1
    Pressure
    Correct
    Wrong
  • 2
    Heat
    Correct
    Wrong
  • 3
    Temperature
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Temperature"
Explanation :

Answer: C) Temperature Explanation: The land breeze is a coastal breeze at night blowing from the land to the ocean. It is caused by the difference in the rates of cooling of the land and of the ocean. Once again, the bigger the difference in temperature between the two, the stronger the wind.

Q: Impulse conduction is fastest in neurons that are 1881 0

  • 1
    Myelinated
    Correct
    Wrong
  • 2
    Motor
    Correct
    Wrong
  • 3
    Unmyelinated
    Correct
    Wrong
  • 4
    Sensory
    Correct
    Wrong
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Answer : 1. "Myelinated"
Explanation :

Answer: A) Myelinated Explanation: A myelinated nerve can be found int the brain or spinal cord as well as the peripheral nervous system, it is white and is surrounded by schwann cells or oligodendrocytes.

Q: 9 tens 10 ones equals 1913 0

  • 1
    910
    Correct
    Wrong
  • 2
    90
    Correct
    Wrong
  • 3
    91
    Correct
    Wrong
  • 4
    100
    Correct
    Wrong
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Answer : 4. "100"
Explanation :

Answer: D) 100 Explanation: 9 tens 10 ones equals => 9 x 10 + 10 x 1 => 90 + 10 => 100.

Q: 7 C in the R? 1306 0

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Answer :
Explanation :

The given letter equation implies that,   7 C in the R = 7 Colours in a Rainbow.

Q: I have a face but no eyes Puzzle 1016 0

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Answer :
Explanation :

A Clock has a face, but no eyes. It has 3 hands i.e, hours, minutes and seconds hands but no arms.

Q: Waksman got the noble prize for the discovery of 1058 0

  • 1
    Streptomycin
    Correct
    Wrong
  • 2
    Chloromycetin
    Correct
    Wrong
  • 3
    Pencillin
    Correct
    Wrong
  • 4
    Neomycin
    Correct
    Wrong
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Answer : 1. "Streptomycin"
Explanation :

Answer: A) Streptomycin Explanation: In 1952, Waksman was awarded the Nobel Prize in Physiology or Medicine in recognition "for his discovery of streptomycin," the first antibiotic active against tuberculosis.

Q: The oldest form of composition of Hindustan Vocal music is 1325 1

  • 1
    Thumri
    Correct
    Wrong
  • 2
    Ghazal
    Correct
    Wrong
  • 3
    Dhrupad
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Dhrupad"
Explanation :

Answer: C) Dhrupad Explanation:

Q: Two bottles contains mixture of milk and water. First bottle contains 64% milk and second bottle contains 26% water. In what ratio these two mixtures are mixed so that new mixture contains 68% milk? 1821 0

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

Answer: A) 3 : 2 Explanation: % of milk in first bottle = 64% % of milk in second bottle = 100 - 26 = 74% Now, ATQ   64%            74%                   68%   6                    4   Hence, by using allegation method,   Required ratio = 3 : 2

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