IIT JEE Practice Question and Answer

Q: Which of these relationships is true of an uncharged atom? 5738 0

  • 1
    The atomic mass is equal to the atomic number.
    Correct
    Wrong
  • 2
    The number of electrons is equal to the number of neutrons.
    Correct
    Wrong
  • 3
    The number of protons is equal to the number of electrons.
    Correct
    Wrong
  • 4
    The atomic mass is equal to the number of electrons.
    Correct
    Wrong
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Answer : 3. "The number of protons is equal to the number of electrons."
Explanation :

Answer: C) The number of protons is equal to the number of electrons. Explanation: The number of protons is equal to the number of electrons. That is the number of positive charges is equal to the number of negative charges.

Q: Which of the following statements about ddntps is true? 2685 0

  • 1
    They have a hydrogen at the 3’ carbon of the sugar.
    Correct
    Wrong
  • 2
    DNA polymerase can add a new dNTP to a 3’ ddNTP.
    Correct
    Wrong
  • 3
    They have a free 3’-hydroxyl group on the ribose sugar.
    Correct
    Wrong
  • 4
    They have an oxygen at the 2’ carbon of the ribose sugar.
    Correct
    Wrong
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Answer : 1. "They have a hydrogen at the 3’ carbon of the sugar."
Explanation :

Answer: A) They have a hydrogen at the 3’ carbon of the sugar. Explanation: ddNTPs - Dideoxynucleotides and abbreviated as ddNTPs.   They are chain-elongating inhibitors of DNA polymerase, used in the Sanger method for DNA sequencing.   They have a hydrogen at the 3’ carbon of the ribose sugar.

Q: Which statement best describes the cold war in 1989? 1940 0

  • 1
    The coldwar started
    Correct
    Wrong
  • 2
    Atom bomb on USSR
    Correct
    Wrong
  • 3
    Glorious revolution occured
    Correct
    Wrong
  • 4
    Beginning of the end of cold war
    Correct
    Wrong
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Answer : 4. "Beginning of the end of cold war"
Explanation :

Answer: D) Beginning of the end of cold war Explanation: The Cold War started with building tensions between the US and the USSR during World War II. As Stalin began to annex more countries and spread communism throughout Eastern Europe, the US began to feel threatened and feared that they would start a war amongst the capitalist nations. The US started an attempt to limit the spread of communism and protect capitalism, which led to a series of passive aggressive and indirectly hostile exchanges between the two nations.   The beginning of the end of the cold war, the Berlin Wall came down. The USSR began to collapse the following year, in 1990.

Q: Consumer protection laws are meant to 1671 0

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Answer :
Explanation :

Protect the consumer from the seller who cheat to sell his product.   The FTC’s Bureau of Consumer Protection stops unfair, deceptive and fraudulent business practices by collecting complaints and conducting investigations, suing companies and people that break the law, developing rules to maintain a fair marketplace, and educating consumers and businesses about their rights and responsibilities.

Q: What is another name for the governor of a state? 1390 0

  • 1
    Chief Executive
    Correct
    Wrong
  • 2
    Attorney General
    Correct
    Wrong
  • 3
    Secretary of the State
    Correct
    Wrong
  • 4
    Vice Pesident
    Correct
    Wrong
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Answer : 1. "Chief Executive"
Explanation :

Answer: A) Chief Executive Explanation: Another name for the governor of the state is Chief Executive of the state. And we also know that, The attorney general is the head of the US Department of Justice, The vice president is just under the president of the US and The secretary of state is the head of the US Department of State.

Q: 18 tens 20 ones = 1584 0

  • 1
    1820
    Correct
    Wrong
  • 2
    180
    Correct
    Wrong
  • 3
    200
    Correct
    Wrong
  • 4
    160
    Correct
    Wrong
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Answer : 3. "200"
Explanation :

Answer: C) 200 Explanation: 18 tens 20 ones, the given stateent can be split into 18 tens = 18 x 10 = 180 20 ones = 20 x 1 = 20   Then add both => 180 + 20 = 200   Hence, 18 tens 20 ones = 200.

Q: The longest period of prenatal development is the 2180 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: What was the topic of the book 'The Other America'? 1367 0

  • 1
    Poverty was widespread in America.
    Correct
    Wrong
  • 2
    Education was lacking in America.
    Correct
    Wrong
  • 3
    Racism was widespread in America.
    Correct
    Wrong
  • 4
    Americans needed more highways.
    Correct
    Wrong
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Answer : 1. "Poverty was widespread in America."
Explanation :

Answer: A) Poverty was widespread in America. Explanation: The book "The Other America" was written by Michael Harrington. The topic of the book 'The Other America' was Poverty was widespread in America.

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