IIT JEE Practice Question and Answer

Q: ______ was named by the Arabs as City of gold ? 1568 1

  • 1
    Mumbai
    Correct
    Wrong
  • 2
    Jaipur
    Correct
    Wrong
  • 3
    Cooch Behar
    Correct
    Wrong
  • 4
    Multan
    Correct
    Wrong
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Answer : 4. "Multan"
Explanation :

Answer: D) Multan Explanation: Mumbai - City of Wealth Jaipur - Pink City Cooch Behar - City of Beauty

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Answer : 4. "Rs. 500"
Explanation :

Answer: D) Rs. 500 Explanation: Watson bought the book for Rs. 240 and sold to Johny at a profit of 50%. S.P = C.P(1 + P%/100) => S.P for Watson = C.P for Johny = 240(1 + 50/100) = 240 x 1.5 = Rs. 360 Let Johny quoted the marked price of the book as Rs. M We know, SP = M.P(1 - Discount(%)/100) Here discount = 10% to Shekar, S.P for Johny = M(1 - 10/100) = 0.9M But Johny want to earn 25% profit, => S.P = C.P(1 + P%/100) => 0.9M = 360(1 + 25/100) => M = (360x1.25)/0.9 => M = Rs. 500 Therefore, Johny should quote Rs. 500 as the marked price of the book to get 25% profit and allowing 10% discount to Shekar.

Q: The world's tallest twisted tower is ? 1568 0

  • 1
    Tokyo Sky Tree
    Correct
    Wrong
  • 2
    BREN Tower
    Correct
    Wrong
  • 3
    Burj Khalifa
    Correct
    Wrong
  • 4
    Infinity Tower
    Correct
    Wrong
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Answer : 4. "Infinity Tower"
Explanation :

Answer: D) Infinity Tower Explanation: The world's tallest twisted tower, the Infinity Tower was launched in Dubai Marina on 10 June 2013.

Q: Is a mushroom an autotroph? 1568 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE
    Correct
    Wrong
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Answer : 2. "FALSE"
Explanation :

Answer: B) FALSE Explanation: Mushrooms are heterotrophs. They are not plants or autotrophs.   Every living thing that exists need energy in order to live. This energy ultimately comes from the sun, and only plants, or autotrophs, can directly use this energy to make food. Those organisms that cannot harness the sun's energy are known as heterotrophs.   Mushrooms belong to kingdom Fungi and are heterotrophs because they decompose and consume nutrients from the soil. They are not green so they cannot photosynthesize For this reason, mushrooms and all other fungi are heterotrophs.

Q: The headquarters of the International court of Justice is situated at _____ ? 1568 0

  • 1
    Sweden
    Correct
    Wrong
  • 2
    Geneva
    Correct
    Wrong
  • 3
    London
    Correct
    Wrong
  • 4
    Hague
    Correct
    Wrong
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Answer : 4. "Hague"
Explanation :

Answer: D) Hague Explanation: International court of Justice (ICJ) is the main judicial organ or branch of the United Nations, sometimes people call it the World Court. ICJ was established in the year 1945 and has its headquarters at The Hague, Netherlands.

Q: On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is  ? 1567 0

  • 1
    476190476
    Correct
    Wrong
  • 2
    48617
    Correct
    Wrong
  • 3
    47619
    Correct
    Wrong
  • 4
    4587962
    Correct
    Wrong
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Answer : 3. "47619"
Explanation :

Answer: C) 47619 Explanation: By hit and trail, we find that 47619 x 7 = 333333. 7) 333333 (47619    333333----------------        0 And 476190476 x 7 = 3333333333 but smallest number is 47619.

Q: Maximum age limit of President of India 1567 0

  • 1
    30
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    45
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 4. "None of the above"
Explanation :

Answer: D) None of the above Explanation: There is no maximum age limit for the President of India. Minimum age limit for president of India is 35 years.

Q: An item is sold at a loss of 10%. Had it sold for Rs. 9 more, a profit of 25/2% would have gained. What is the cost price of the item? 1567 0

  • 1
    Rs. 90
    Correct
    Wrong
  • 2
    Rs. 75
    Correct
    Wrong
  • 3
    Rs. 55
    Correct
    Wrong
  • 4
    Rs. 40
    Correct
    Wrong
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Answer : 4. "Rs. 40"
Explanation :

Answer: D) Rs. 40 Explanation: Let the cost price of the item = Rs. 50 Sold at 10% loss => for Rs. 50 loss  S.P = Rs. 45 From the  given data, 25/2 % gain if it is sold at Rs. 9 more 56.25 - 45 = 9 => 11.25 = 9 => 22.5 = 18 => 45 = 36 => 50 = ? => C.P = 50 x 3645 = 40   Hence, the Cost price of the item = Rs. 40.

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