IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: A sum of Rs. 427 is to be divided among A, B and C in such a way that 3 times A’s share, 4 times B’s share and 7 times C’s share are all equal. The share of C is ? 5519 0

  • 1
    64
    सही
    गलत
  • 2
    76
    सही
    गलत
  • 3
    84
    सही
    गलत
  • 4
    98
    सही
    गलत
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उत्तर : 3. "84"
व्याख्या :

Answer: C) 84 Explanation: Given total sum = Rs. 427And given that 3 times A’s share, 4 times B’s share and 7 times C’s share are all equal.=> 3A = 4B = 7CBut given=> A + B + C = 427Now express A and B in terms of C i.e=> (7C/3) + (7C/4) + C = 427=> C = 84

प्र: Find the odd number out of the following number series? 2 4 8 11.5 18.25 28.375 5496 0

  • 1
    18.25
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  • 2
    28.375
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    गलत
  • 3
    11.5
    सही
    गलत
  • 4
    8
    सही
    गलत
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उत्तर : 4. "8"
व्याख्या :

Answer: D) 8 Explanation: Given number series follows a pattern that, 2 2 x 1.5 + 1 = 4 4 x 1.5 + 1 = 7 (not equal to 8) 7 x 1.5 + 1 = 11.5 11.5 x 1.5 + 1 = 18.25 18.25 x 1.5 + 1 = 28.375   Hence, the odd number in the given number series is 8.

प्र: Which is the gas used for making vegetables and vanaspathi from vegetable oils? 5483 0

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    Hydrogen
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  • 2
    Nitrogen
    सही
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  • 3
    Argon
    सही
    गलत
  • 4
    Helium
    सही
    गलत
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उत्तर : 1. "Hydrogen"
व्याख्या :

Answer: A) Hydrogen Explanation: Hydrogen gas is used for making vegetables and vanaspathi from vegetable oils. As it is colourless, odourless, tasteless, flammable gaseous substance, it is added to oils to make them more solid or spreadable. The use of hydrogenation helps to prolong the shelf life of the food and maintain flavour stability.

प्र: 'P' walked 1 km towards south direction and turned  90oACW and walked 2 km. Then he turned his left and walked 1 km and then he turned his right and walked 2 km. After that he turned 90o ACW and walked 3 km. How far is he from the starting point ? 5462 0

  • 1
    5 km
    सही
    गलत
  • 2
    4 km
    सही
    गलत
  • 3
    2 km
    सही
    गलत
  • 4
    0 km
    सही
    गलत
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उत्तर : 1. "5 km"
व्याख्या :

Answer: A) 5 km Explanation:

प्र: Amar can do a piece of work in 10 days. He works at it for 4 days and then Arun finishes it in 9 days. In how many days can Amar and Arun together finish the work ? 5451 0

  • 1
    4 days
    सही
    गलत
  • 2
    8 days
    सही
    गलत
  • 3
    3 days
    सही
    गलत
  • 4
    6 days
    सही
    गलत
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उत्तर : 4. "6 days"
व्याख्या :

Answer: D) 6 days Explanation: 4/10 + 9/x = 1     => x = 15    Then both can do in  1/10 + 1/15 = 1/6     => 6 days

प्र: In a beach, Renu is running with her children and there she met Vishal and Laxmi. Vishal introduces Ravi to those children as " This person is the daughter of your mother's father's mother and is my sister." How is Vishal and Laxmi related to Renu ? 5439 0

  • 1
    Brother and Sister
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  • 2
    Uncle and Aunt
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  • 3
    Father and Mother
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    गलत
  • 4
    Can't determine
    सही
    गलत
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उत्तर : 2. "Uncle and Aunt"
व्याख्या :

Answer: B) Uncle and Aunt Explanation: Daughter of your mother's father's mother => Maternal grandmother => Renu's Aunt. Hence, Laxmi is Renu's Aunt and Vishal is Renu's Uncle.

प्र: Microprocessors as switching devices are for which generation computers? 5423 0

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    Fourth generation
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  • 2
    Third generation
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  • 3
    Second generation
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  • 4
    First generation
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उत्तर : 1. "Fourth generation"
व्याख्या :

Answer: A) Fourth generation Explanation: Microprocessors are used in the computers of fourth generation computers. Personal microcomputers were possible due to the microprocessors.   Microprocessors further revolutionized the development of computers.   The first microprocessor called Intel 4004 was developed by American Intel Corporation in 1971.

प्र: If today is Saturday, what will be the day 350 days from now  ? 5382 0

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    Saturday
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    गलत
  • 2
    Friday
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  • 3
    Sunday
    सही
    गलत
  • 4
    Monday
    सही
    गलत
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उत्तर : 1. "Saturday"
व्याख्या :

Answer: A) Saturday Explanation: 350 days, 350/7 = 50, no odd days, so it will be a Saturday.

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