IIT JEE Practice Question and Answer

Q: Avanthi’s age is 1/6th of her father’s age. Her father’s age will be twice of Kapil’s age after 10 years. If Kapil’s eighth birthday was celebrated two years ago, then what is Avanthi’s present age ? 1785 0

  • 1
    6 years
    Correct
    Wrong
  • 2
    4 years
    Correct
    Wrong
  • 3
    7 years
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 4. "None"
Explanation :

Answer: D) None Explanation: As given Kapil's 8th birthday was celebrated 2 years ago, Kapil’s present age = 8 + 2 = 10 years. Father's age is twice of Kapil’s age after 10 years. => F + 10 = 2 (K + 10) = 2 (10+ 10)F = 30years, Avanthi's age =1/6(F) = 30/6 = 5 years.

Q: Which organelle is the control center of a cell? 1784 0

  • 1
    Nucleus
    Correct
    Wrong
  • 2
    Cytoplasm
    Correct
    Wrong
  • 3
    Cell membrane
    Correct
    Wrong
  • 4
    endoplasmic reticulum
    Correct
    Wrong
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Answer : 1. "Nucleus"
Explanation :

Answer: A) Nucleus Explanation: Nucleus serves as the control center for cell metabolism and reproduction.

Q: Who has become the first cricketer to score 10,000 runs in T20 cricket ? 1784 0

  • 1
    David Warner
    Correct
    Wrong
  • 2
    Virat Kohli
    Correct
    Wrong
  • 3
    Chris Gayle
    Correct
    Wrong
  • 4
    Suresh Raina
    Correct
    Wrong
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Answer : 3. "Chris Gayle"
Explanation :

Answer: C) Chris Gayle Explanation:

Q: If the price of diesel increases by 25% and Karthik intends to spend only an additional 15% on diesel, by how much % will he reduce the quantity of diesel purchased ? 1784 0

  • 1
    6.67 %
    Correct
    Wrong
  • 2
    8 %
    Correct
    Wrong
  • 3
    7.41 %
    Correct
    Wrong
  • 4
    9 %
    Correct
    Wrong
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Answer : 2. "8 %"
Explanation :

Answer: B) 8 % Explanation: Let the price of 1 litre of diesel be Rs.x and let Karthik initially buy 'y' litres of diesel. Therefore, he would have spent Rs. xy on diesel. When the price of diesel increases by 25%, the new price per litre of diesel is 1.25x. Karthik intends to increase the amount he spends on diesel by 15%.i.e., he is willing to spend xy + 15% of xy = 1.15xy Let the new quantity of diesel that he can get be 'q'.Then, 1.25x x q = 1.15xyOr q = (1.15/1.25)y = 0.92y. As the new quantity that he can buy is 0.92y, he gets 0.08y lesser than what he used to get earlier. Or a reduction of 8%.

Q: How many Types of Soil in India? 1784 0

  • 1
    4
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 4. "8"
Explanation :

Answer: D) 8 Explanation: There are 8 different types of Soils present in India. They are primarily differentiated on the basis of composition and structure. They are :: 1.  Alluvial soils,  2.  Black soils, 3.  Red soils, 4.  Laterite and Lateritic soils, 5.  Forest and Mountain soils, 6.  Arid and Desert soils, 7.  Saline and Alkaline soils and 8.  Peaty and Marshy soils.

Q: 1.12.91 is the first Tuesday. Which is the fourth Thursday of December 91  ? 1784 0

  • 1
    22.12.91
    Correct
    Wrong
  • 2
    25.12.91
    Correct
    Wrong
  • 3
    24.12.91
    Correct
    Wrong
  • 4
    23.12.91
    Correct
    Wrong
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Answer : 2. "25.12.91"
Explanation :

Answer: B) 25.12.91 Explanation: Given that 2.12.91 is the first TuesdayHence we can assume that 4.12.91 is the first Thursday If we add 7 days to 4.12.91, we will get second ThursdayIf we add 14 days to 4.12.91, we will get third ThursdayIf we add 21 days to 4.12.91, we will get fourth Thursday => fourth Thursday = (4.12.91 + 21 days) = 25.12.91.

Q: The most populous city in the world is  ? 1783 0

  • 1
    Tokyo
    Correct
    Wrong
  • 2
    Paris
    Correct
    Wrong
  • 3
    Peking
    Correct
    Wrong
  • 4
    London
    Correct
    Wrong
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Answer : 1. "Tokyo"
Explanation :

Answer: A) Tokyo Explanation:

Q: Function of Bile juice? 1783 0

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Answer :
Explanation :

Bile contains bile acids, which are critical for digestion and absorption of fats in the small intestine. Since bile increases the absorption of fats, it is an important part of the absorption of the fat-soluble substances, such as the vitamins A, D, E, and K. Besides its digestive function, many waste products, including bilirubin, a byproduct of red blood cells recycled by the liver are eliminated from the body by secretion into bile and elimination in feces.

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