IIT JEE Practice Question and Answer

Q: In how many different ways can the letters of the word 'ABYSMAL' be arranged ? 1739 0

  • 1
    5040
    Correct
    Wrong
  • 2
    3650
    Correct
    Wrong
  • 3
    4150
    Correct
    Wrong
  • 4
    2520
    Correct
    Wrong
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Answer : 4. "2520"
Explanation :

Answer: D) 2520 Explanation: Total number of letters in the word ABYSMAL are 7   Number of ways these 7 letters can be arranged are 7! ways   But the letter is repeated and this can be arranged in 2! ways   Total number of ways arranging ABYSMAL = 7!/2! = 5040/2 = 2520 ways.

Q: The rate of change of linear momentum of a body falling freely under gravity is equal to it's ____ ? 1739 0

  • 1
    Kinetic Energy
    Correct
    Wrong
  • 2
    Weight
    Correct
    Wrong
  • 3
    Potential Energy
    Correct
    Wrong
  • 4
    Impulse
    Correct
    Wrong
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Answer : 2. "Weight"
Explanation :

Answer: B) Weight Explanation: Rate of change of impulse equals the force . In case of freely falling body the only force is the weight.

Q: 12 as a percentage? 1739 0

  • 1
    50%
    Correct
    Wrong
  • 2
    5%
    Correct
    Wrong
  • 3
    0.5%
    Correct
    Wrong
  • 4
    0.05%
    Correct
    Wrong
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Answer : 1. "50%"
Explanation :

Answer: A) 50% Explanation: 1/2 as a percentage means 1/2 = 0.5 in decimal Now, in percentage means 0.5 x 100% = 50%.

Q: Which ocean surrounds Antarctica? 1739 0

  • 1
    Atlantic ocean
    Correct
    Wrong
  • 2
    Indian ocean
    Correct
    Wrong
  • 3
    Pacific ocean
    Correct
    Wrong
  • 4
    Southen ocean
    Correct
    Wrong
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Answer : 4. "Southen ocean"
Explanation :

Answer: D) Southen ocean Explanation: Antarctica is surrounded on all sides by water. The Indian, Pacific and Atlantic Oceans surround it on all sides. These three Oceans all meet at Antarctica. The three oceans are collectively called the Southern Ocean. This is the area located south of 50° latitude.

Q: In a mixture of 240 lt. water is 20% and rest is Milk. What quantity of mixture should be taken out and replaced with water so that water becomes 40%? 1739 0

  • 1
    60 lit
    Correct
    Wrong
  • 2
    55 lit
    Correct
    Wrong
  • 3
    45 lit
    Correct
    Wrong
  • 4
    50 lit
    Correct
    Wrong
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Answer : 1. "60 lit"
Explanation :

Answer: A) 60 lit Explanation:

Q: The court language during the reign of Akbar was _____ ? 1738 0

  • 1
    Urdu
    Correct
    Wrong
  • 2
    Persian
    Correct
    Wrong
  • 3
    Arabic
    Correct
    Wrong
  • 4
    Hindi
    Correct
    Wrong
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Answer : 2. "Persian"
Explanation :

Answer: B) Persian Explanation:

Q: Replace each letter for a unique digit so that the equation is correct 1738 0

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Answer :
Explanation :

(1+9+6+8+3) x (1+9+6+8+3) x (1+9+6+8+3) = 19683

Q: Which was the first Hydel power projects in India? 1737 0

  • 1
    Paikara in Tamilnadu
    Correct
    Wrong
  • 2
    Nizamsagar in Telangana
    Correct
    Wrong
  • 3
    Siva Samudram in Karnataka
    Correct
    Wrong
  • 4
    Palli vasal in Kerela
    Correct
    Wrong
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Answer : 3. "Siva Samudram in Karnataka"
Explanation :

Answer: C) Siva Samudram in Karnataka Explanation: Siva Samudram in Karnatka. The potential for hydroelectric power in India is one of the greatest in the world.   The first hydro-electric power station in India was established in Karnataka at "shivana samudra".

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