IIT JEE Practice Question and Answer

Q: What organelle is responsible for photosynthesis? 1356 0

  • 1
    mitochondria
    Correct
    Wrong
  • 2
    Cytoplasm
    Correct
    Wrong
  • 3
    Chloroplasts
    Correct
    Wrong
  • 4
    Ribosomes
    Correct
    Wrong
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Answer : 3. "Chloroplasts"
Explanation :

Answer: C) Chloroplasts Explanation: Chloroplasts are organelles in plant and bacteria cells that contain the chlorophyll is responsible for photosynthesis.

Q: What is the number that should come in the place of question mark ? 1050    420    168     67.2     ? 1355 0

  • 1
    19.11
    Correct
    Wrong
  • 2
    14.25
    Correct
    Wrong
  • 3
    10.752
    Correct
    Wrong
  • 4
    26.88
    Correct
    Wrong
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Answer : 4. "26.88"
Explanation :

Answer: D) 26.88 Explanation: Given series follows the rule of 1050/2.5 = 420420/2.5 = 168168/2.5 = 67.2so 67.2/2.5 = 26.88

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? 1355 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 of the following is a polymer? 1353 0

  • 1
    Glycerol
    Correct
    Wrong
  • 2
    Amino acid
    Correct
    Wrong
  • 3
    Nucleic acid
    Correct
    Wrong
  • 4
    Fatty acid
    Correct
    Wrong
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Answer : 3. "Nucleic acid"
Explanation :

Answer: C) Nucleic acid Explanation: Nucleic acid is a polymer among the given options.

Q: Keoladeo National Park is situated in which state? 1352 0

  • 1
    Jharkand
    Correct
    Wrong
  • 2
    Rajasthan
    Correct
    Wrong
  • 3
    Madhya Pradesh
    Correct
    Wrong
  • 4
    Uttar Pradesh
    Correct
    Wrong
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Answer : 2. "Rajasthan"
Explanation :

Answer: B) Rajasthan Explanation:

Q: If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is  ? 1352 0

  • 1
    1
    Correct
    Wrong
  • 2
    1/2
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    3/5
    Correct
    Wrong
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Answer : 2. "1/2"
Explanation :

Answer: B) 1/2 Explanation: The number of exhaustive outcomes is 36.Let E be the event of getting an even number on one die and an odd number on the other. Let the event of getting either both even or both odd then = 18/36 = 1/2P(E) = 1 - 1/2 = 1/2.

Q: As per the decision of the GST Council, e-Way Bill system has been rolled out from 1351 0

  • 1
    1st March 2018
    Correct
    Wrong
  • 2
    1st April 2018
    Correct
    Wrong
  • 3
    1st May 2018
    Correct
    Wrong
  • 4
    1st January 2018
    Correct
    Wrong
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Answer : 2. "1st April 2018"
Explanation :

Answer: B) 1st April 2018 Explanation: As per the decision of the GST Council, e-Way Bill system has been rolled out from 1st of April this year (2018).

Q: What has 4 Eyes But cannot see? 1351 0

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Answer :
Explanation :

What has 4 Eyes But cannot see is Mississippi. The wording of Mississippi has 4 'i''s. But it can't see.

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