IIT JEE प्रश्न और उत्तर का अभ्यास करें

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

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    Diagnosis
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    Rebuild
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    Manufacture
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    Postmortem
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उत्तर : 4. "Postmortem"
व्याख्या :

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

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

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    TRUE
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    FALSE Answer & Explanation Answer:
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उत्तर : 1. "TRUE"
व्याख्या :

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

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

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उत्तर :
व्याख्या :

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.

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

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    Theory
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    Fascination
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    Complexity
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    Falling
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उत्तर : 1. "Theory"
व्याख्या :

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.

प्र: 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

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    3.5%
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    4%
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    5%
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    6.5%
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उत्तर : 3. "5%"
व्याख्या :

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.

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

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    3924
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    1962
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    1684
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    1452
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उत्तर : 2. "1962"
व्याख्या :

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.

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

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    State governments
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    Every 4 years of President election
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    Members of congress
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    Checks and Balances
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उत्तर : 4. "Checks and Balances"
व्याख्या :

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.

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

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    Blue green algae
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    Brown algae
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    Red algae
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    Green algae
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उत्तर : 3. "Red algae"
व्याख्या :

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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