IIT JEE प्रश्न और उत्तर का अभ्यास करें

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

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    The atomic mass is equal to the atomic number.
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  • 2
    The number of electrons is equal to the number of neutrons.
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  • 3
    The number of protons is equal to the number of electrons.
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  • 4
    The atomic mass is equal to the number of electrons.
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उत्तर : 3. "The number of protons is equal to the number of electrons."
व्याख्या :

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.

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

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

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.

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

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    The coldwar started
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  • 2
    Atom bomb on USSR
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  • 3
    Glorious revolution occured
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  • 4
    Beginning of the end of cold war
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उत्तर : 4. "Beginning of the end of cold war"
व्याख्या :

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.

प्र: Consumer protection laws are meant to 1669 0

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उत्तर :
व्याख्या :

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.

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

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    Chief Executive
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    Attorney General
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    Secretary of the State
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  • 4
    Vice Pesident
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उत्तर : 1. "Chief Executive"
व्याख्या :

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.

प्र: 18 tens 20 ones = 1584 0

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    1820
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  • 2
    180
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  • 3
    200
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  • 4
    160
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उत्तर : 3. "200"
व्याख्या :

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.

प्र: The longest period of prenatal development is the 2179 0

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    Germinal period
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  • 2
    Fetal period
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  • 3
    Embryonic period
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  • 4
    None
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उत्तर : 2. "Fetal period"
व्याख्या :

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.

प्र: What was the topic of the book 'The Other America'? 1367 0

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    Poverty was widespread in America.
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    Education was lacking in America.
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    Racism was widespread in America.
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  • 4
    Americans needed more highways.
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उत्तर : 1. "Poverty was widespread in America."
व्याख्या :

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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