IIT JEE Practice Question and Answer

Q: Choose the word which gives similar meaning to the given word from the following options. 'Autopsy' 1686 0

  • 1
    Diagnosis
    Correct
    Wrong
  • 2
    Rebuild
    Correct
    Wrong
  • 3
    Manufacture
    Correct
    Wrong
  • 4
    Postmortem
    Correct
    Wrong
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Answer : 4. "Postmortem"
Explanation :

Answer: D) Postmortem Explanation: Autopsy is the medical term for postmortem.

Q: The ability to do work is called Energy. 1685 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE Answer & Explanation Answer:
    Correct
    Wrong
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Answer : 1. "TRUE"
Explanation :

Answer: A) TRUE Explanation: Yes, the ability to do work is called Energy is True.

Q: What can go up a chimney down, but cannot go down a chimney up? 1685 0

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Answer :
Explanation :

An Umbrella. Yes, when it is open it can't be fit under a chimney but when it is closed it can be fit down a chimney.

Q: Choose the synonym of 'Hypothesis' from the following options ? 1685 0

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    Theory
    Correct
    Wrong
  • 2
    Fascination
    Correct
    Wrong
  • 3
    Complexity
    Correct
    Wrong
  • 4
    Falling
    Correct
    Wrong
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Answer : 1. "Theory"
Explanation :

Answer: A) Theory Explanation: 'Hypothesis' is a word that gives a brief explanation of the concepts based on the limited evidence. The word 'theory' is closest in meaning to it.

Q: What is the interest rate per annum, if a sum of money invested at compound interest amount to Rs. 2400 in 3 years and in 4 years to Rs. 2,520? 1684 0

  • 1
    3.5%
    Correct
    Wrong
  • 2
    4%
    Correct
    Wrong
  • 3
    5%
    Correct
    Wrong
  • 4
    6.5%
    Correct
    Wrong
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Answer : 3. "5%"
Explanation :

Answer: C) 5% Explanation: Let 'R%' be the rate of interest From the given data, 25202400 = 1 + R10041 + R1003⇒1 + R100 = 6360⇒R = 5   Hence, the rate of interest R = 5% per annum.

Q: Find the sum of the Arithmetic Series upto 36 terms 2, 5, 8, 11,... 1683 1

  • 1
    3924
    Correct
    Wrong
  • 2
    1962
    Correct
    Wrong
  • 3
    1684
    Correct
    Wrong
  • 4
    1452
    Correct
    Wrong
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Answer : 2. "1962"
Explanation :

Answer: B) 1962 Explanation: Arithmetic Series ::   An Arithmetic Series is a series of numbers in which each term increases by a constant amount.   How to find the sum of the Arithmetic Sequence or Series for the given Series ::   When the series contains a large amount of numbers, its impractical to add manually. You can quickly find the sum of any arithmetic sequence by multiplying the average of the first and last term by the number of terms in the sequence.   That is given by Sn = n(a1 + an)2 Where n = number of terms, a1 = first term, an = last term   Here Last term is given by an = a1 + n-1d where d = common difference   Now given Arithmetic Series is    2, 5, 8, 11,...   Here a1 = 2,  d = 3, n = 36    Now, an= a1 + n - 1d a36= 2 + 36 - 13 = 105 + 2 = 107    Now, Sum to 36 terms is given by   S36 = 36(2 + 107)2 = 36 x 1092 = 39242 = 1962       Therefore, Sum to 36 terms of the series 2, 5, 8, 11,... is 1962.

Q: What stops one branch of government from becoming too powerful? 1683 0

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    State governments
    Correct
    Wrong
  • 2
    Every 4 years of President election
    Correct
    Wrong
  • 3
    Members of congress
    Correct
    Wrong
  • 4
    Checks and Balances
    Correct
    Wrong
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Answer : 4. "Checks and Balances"
Explanation :

Answer: D) Checks and Balances Explanation: A procedure or method called Checks and Balances stops one branch of government from becoming too powerful. In the United States, there are three branches of government: The Executive, Legislative, and Judicial.   Each has its own responsibilities and at the same time they work together to make the country run smoothly and to assure that the rights of citizens are not ignored or disallowed.   There is a clear separation of powers between them.   Checks and Balances limit the power within each branch.   Each branch can stop and/or override processes within other branches in manners that are outlined in federal laws, regulations, and the constitution.   This way, their powers are balanced because the branches of government have the responsibility to check each other.

Q: Floridian starch is characteristic energy storage material of which algae? 1683 0

  • 1
    Blue green algae
    Correct
    Wrong
  • 2
    Brown algae
    Correct
    Wrong
  • 3
    Red algae
    Correct
    Wrong
  • 4
    Green algae
    Correct
    Wrong
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Answer : 3. "Red algae"
Explanation :

Answer: C) Red algae Explanation: The floridian starch is reserve food materials in the red algae or the members of class Rhodophytae. It is a characteristic feature of this group.

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