IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Complete the missing number in the given series. 5,  20,  76,  (—),  448 3449 0

  • 1
    185
    सही
    गलत
  • 2
    225
    सही
    गलत
  • 3
    415
    सही
    गलत
  • 4
    232
    सही
    गलत
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उत्तर : 2. "225"
व्याख्या :

Answer: B) 225 Explanation: The series follows the following pattern 5 X 5 – 5 = 20 20 X 4 – 4 = 76 76 X 3 – 3 = 225 225 X 2 – 2 = 448 Hence, the term 225 denoted by (d) completes the series

प्र: Blotting paper absorbs ink due to 3448 0

  • 1
    Capillary action phenomenon
    सही
    गलत
  • 2
    Diffusion of ink through the blotting
    सही
    गलत
  • 3
    Siphon action
    सही
    गलत
  • 4
    Viscosity of ink
    सही
    गलत
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उत्तर : 1. "Capillary action phenomenon"
व्याख्या :

Answer: A) Capillary action phenomenon Explanation: Blotting paper absorbs ink by the process of capillary action. The capillary action is based on the property of surface tension of liquid.   All unsized paper will absorb water. Blotting paper is not sized and made bulkier to provide capillary action for faster absorption of liquid.   Blotting paper has also been sold as a cosmetic to aid in the removal of skin oils and makeup.

प्र: The average age of a class is 19 years. While the average age of girls is 18 and that of boys is 21. If the number of girls in the class is 16, Find the number of Boys in the class? 3443 0

  • 1
    12
    सही
    गलत
  • 2
    10
    सही
    गलत
  • 3
    8
    सही
    गलत
  • 4
    6
    सही
    गलत
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उत्तर : 3. "8"
व्याख्या :

Answer: C) 8 Explanation: Let the number of boys = x From the given data, => [21x + 16(18)]/(x+16) = 19 => 21x - 19x = 19(16) - 16(18) => 2x = 16 => x = 8 Therefore, the number of boys in the class = 8.

प्र: In an exam, a candidate secured 504 marks out of the maximum mark of 'M'. If the maximum mark 'M' is converted into 800 marks, he would have secured 384 marks. What is the value of 'M' ? 3433 0

  • 1
    910
    सही
    गलत
  • 2
    1000
    सही
    गलत
  • 3
    970
    सही
    गलत
  • 4
    None of the above
    सही
    गलत
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उत्तर : 4. "None of the above"
व्याख्या :

Answer: D) None of the above Explanation: 504/M = 384/800 (504 x 800) / 384 = M M = 1050

प्र: A milkman claims to sell milk at its cost price, still, he is making a profit of 30% since he has mixed some amount of water in the milk. What is the % of milk in the mixture? 3432 0

  • 1
    71.02%
    सही
    गलत
  • 2
    76.92%
    सही
    गलत
  • 3
    63.22%
    सही
    गलत
  • 4
    86.42%
    सही
    गलत
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उत्तर : 2. "76.92%"
व्याख्या :

Answer: B) 76.92% Explanation: Let the milk he bought is 1000 ml Let C.P of 1000 ml is Rs. 100 Here let he is mixing K ml of water He is getting 30% profit => Now, the selling price is also Rs. 100 for 1000 ml => 100 : K% = 100 : 30 10 : 3 is ratio of milk to water => Percentage of milk = 10 x 100/13 = 1000/13 = 76.92%

प्र: Which organisation among the following gave a slogan "Hyderabad for Hyderabadies" ? 3431 0

  • 1
    Ittehadul Musleemeen
    सही
    गलत
  • 2
    Jameeyat Riya Mame Nizam
    सही
    गलत
  • 3
    Deccan-e-Shabbir
    सही
    गलत
  • 4
    Jamia Islamia
    सही
    गलत
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उत्तर : 2. "Jameeyat Riya Mame Nizam"
व्याख्या :

Answer: B) Jameeyat Riya Mame Nizam Explanation:

प्र: If a trader sold two cars each at Rs. 325475 and gains 12% on the first and loses 12% on the second, then his profit or loss percent on the whole is ? 3416 0

  • 1
    1.44% loss
    सही
    गलत
  • 2
    14.4% loss
    सही
    गलत
  • 3
    0%
    सही
    गलत
  • 4
    14.4% profit
    सही
    गलत
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उत्तर : 1. "1.44% loss"
व्याख्या :

Answer: A) 1.44% loss Explanation: SP of each car is Rs. 325475, he gains 12% on first car and losses 12% on second car.In this case, there will be loss and percentage of loss is given by = [(profit%)(loss%)]/100 = (12)(12)/100 % = 1.44%

प्र: A check returned by the bank marked nsf means 3414 0

  • 1
    Cheque has been forged
    सही
    गलत
  • 2
    Cheque can't be cashed being illegal
    सही
    गलत
  • 3
    There are not sufficient funds in your accoun
    सही
    गलत
  • 4
    Bank can't verify your identity
    सही
    गलत
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उत्तर : 3. "There are not sufficient funds in your accoun"
व्याख्या :

Answer: C) There are not sufficient funds in your accoun Explanation: NSF means - Not Sufficient Funds.

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