IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Eric is the son of Tom who is the brother of Jerry who is the daughter of Sin. Doremon is the sister of Popoy who is son of Chain. Ivanka is the daughter of Popoy who is the husband of Jerry. Sin is the male person and Chain is the female person. How is Ivanka related to Eric ? 1922 0

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    Cousin sister
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  • 2
    Nephew
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  • 3
    Niece
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  • 4
    Daughter
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उत्तर : 1. "Cousin sister"
व्याख्या :

Answer: A) Cousin sister Explanation: Since Eric's father and Ivanka's mother are Brother and sister,  => Ivanka is Eric's Aunt Daughter => Cousin Sister.

प्र: 14 persons are seated around a circular table. Find the probability that 3 particular persons always seated together. 1921 0

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    11/379
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  • 2
    21/628
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  • 3
    24/625
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  • 4
    26/247
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उत्तर : 3. "24/625"
व्याख्या :

Answer: C) 24/625 Explanation: Total no of ways = (14 – 1)! = 13! Number of favorable ways = (12 – 1)! = 11!   So, required probability = 11!×3!13! = 39916800×66227020800 = 24625

प्र: What event prompted the formation of the first continental congress? 1921 0

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    The Boston Massacre
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  • 2
    The battles of Lexington and Concord
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  • 3
    The Boston Tea Party
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  • 4
    None of the above
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उत्तर : 3. "The Boston Tea Party"
व्याख्या :

Answer: C) The Boston Tea Party Explanation: Before the shots were fired at Lexington and Concord, the colonies made an attempt to settle the concerns and frustrations raised with the Intolerable Acts through debate and discussion. Thus, the First Continental Congress was called to order on September 5th, 1774. The First Continental Congress was a meeting of delegates from twelve of the Thirteen Colonies early in the American Revolution. It was called in response to the Intolerable Acts passed by the British Parliament, which the British referred to as the Coercive Acts, with which the British intended to punish Massachusetts for the Boston Tea Party.

प्र: What is the science of mapmaking called? 1921 0

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    Coriography
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    Cartography
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    Photograrnmetry
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  • 4
    Mapping
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उत्तर : 2. "Cartography"
व्याख्या :

Answer: B) Cartography Explanation: The art and science of map making is called Cartography.

प्र: How many seconds in 10 years? 1921 0

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    31523500 sec
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  • 2
    315360000 sec
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  • 3
    315423000 sec
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  • 4
    315354000 sec
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उत्तर : 2. "315360000 sec"
व्याख्या :

Answer: B) 315360000 sec Explanation: We know that, 1 year = 365 days 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds.   Then, 1 year = 365 x 24 x 60 x 60 seconds. = 8760 x 3600 1 year = 31536000 seconds.   Hence, 10 years = 31536000 x 10 = 315360000 seconds.

प्र: What important polymer is located in the nucleus? 1920 0

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    Ribosomes
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    Chromosomes
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    DNA
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    Proteins
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उत्तर : 3. "DNA"
व्याख्या :

Answer: C) DNA Explanation: The most important polymer present in the nucleus is DNA- the master molecule. It is a polymer of Nucleotides.

प्र: Find the next number in the number series? 1, 4, 12, 32, ? 1919 0

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    80
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  • 2
    100
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  • 3
    192
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  • 4
    169
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उत्तर : 1. "80"
व्याख्या :

Answer: A) 80 Explanation: Next number of the sequence 1, 4, 12, 32,... 1 = 2 x 20 4 = 2 x 21 12 = 3 x 22 32 = 4 x 23 80 = 5 x 24.

प्र: Mary is 12 years younger to Pinky. After 3 years, the ratio of their ages will be 5:8. If the present age of Sam is the sum of ages of Mary and Pinky, then what was the age of Sam 15 years back ? 1918 0

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    31 years
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    37 years
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    46 years
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  • 4
    29 years
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उत्तर : 1. "31 years"
व्याख्या :

Answer: A) 31 years Explanation: Let the present age of Pinky be x years   Then the age of Mary is x - 12 years   After 3 years,   Ratio of  MaryPinky = x - 9x + 3 = 58   8x - 72 = 5x +15   => 3x = 87   => x = 29   => Age of Pinky = 29 years   => Age of Mary = 29 - 12 = 17 years   Present age of Sam = 29 + 17 = 46   Before 15 years Sam age = 46 - 15 = 31 years.

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