IIT JEE Practice Question and Answer

Q: Which of the following is not a polymer? 2302 0

  • 1
    DNA
    Correct
    Wrong
  • 2
    Glucose
    Correct
    Wrong
  • 3
    Starch
    Correct
    Wrong
  • 4
    Cellulose
    Correct
    Wrong
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Answer : 2. "Glucose"
Explanation :

Answer: B) Glucose Explanation: Since A polymer is a large molecule, or macromolecule, composed of many repeated subunits. Glucose is not a polymer.

Q: Pride is to lion as shoal is to 2301 0

  • 1
    Fish
    Correct
    Wrong
  • 2
    School
    Correct
    Wrong
  • 3
    Deer
    Correct
    Wrong
  • 4
    Plants
    Correct
    Wrong
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Answer : 1. "Fish"
Explanation :

Answer: A) Fish Explanation: Given Pride is to lion as shoal is to ?. Pride means a group of lions. Similarly, Shoal means a group of fish swimming. Here the other options have no relation with the given word in that manner.   Hence, Pride is to Lion as Shoal is to Fish.

Q: The longest period of prenatal development is the 2300 0

  • 1
    Germinal period
    Correct
    Wrong
  • 2
    Fetal period
    Correct
    Wrong
  • 3
    Embryonic period
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Fetal period"
Explanation :

Answer: B) Fetal period Explanation: The third and longest period of prenatal development, extending from the ninth week until birth is Fetal period.   The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week are known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.

Q: One type of liquid contains 25 % of benzene, the other contains 30% of benzene. A can is filled with 6 parts of the first liquid and 4 parts of the second liquid. Find the percentage of benzene in the new mixture. 2299 0

  • 1
    27 %
    Correct
    Wrong
  • 2
    26 %
    Correct
    Wrong
  • 3
    29 %
    Correct
    Wrong
  • 4
    21 %
    Correct
    Wrong
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Answer : 1. "27 %"
Explanation :

Answer: A) 27 % Explanation: Let the percentage of benzene = X(30 - X)/(X- 25) = 6/4 = 3/2 => 5X = 135  X = 27 So, required percentage of benzene = 27 %

Q: What has to be broken before you can use or eat it? 2299 0

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Answer :
Explanation :

Egg. Egg is to be broken if we want to use or eat it.

Q: Assertion( 2298 0

  • 1
    : Most of the Himalayan rivers are perennial.Reason(R) : They are fed by melting snow. A) R correctly explains A
    Correct
    Wrong
  • 2
    R is true but A is fale
    Correct
    Wrong
  • 3
    A is true but R is false
    Correct
    Wrong
  • 4
    A) R correctly explains A B) R is true but A is fale C) A is true but R is false D)
    Correct
    Wrong
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Answer : 1. ": Most of the Himalayan rivers are perennial.Reason(R) : They are fed by melting snow. A) R correctly explains A"
Explanation :

Answer: A) R correctly explains A Explanation: Most Himalayan rivers are perennial because they are fed by the melting snow throughout the year.Thus, both A and R are true & R correctly explains A.

Q: Which of the following is NOT a constitutional body? 2298 0

  • 1
    National Advisory Council
    Correct
    Wrong
  • 2
    Law Commission
    Correct
    Wrong
  • 3
    Election Commission
    Correct
    Wrong
  • 4
    Finance Commission
    Correct
    Wrong
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Answer : 1. "National Advisory Council"
Explanation :

Answer: A) National Advisory Council Explanation: National Advisory Council is NOT a constitutional body.   The National Advisory Council (NAC) of India was an advisory body set up by the first United Progressive Alliance (UPA) government to advise the Prime Minister of India.

Q: In how many ways the letters of the word NUMERICAL can be arranged so that the consonants always occupy the even places ? 2298 0

  • 1
    5!
    Correct
    Wrong
  • 2
    6!
    Correct
    Wrong
  • 3
    4!
    Correct
    Wrong
  • 4
    Can't determine
    Correct
    Wrong
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Answer : 4. "Can't determine"
Explanation :

Answer: D) Can't determine Explanation: NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions. And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions. Therefore, Can't be determined.

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