IIT JEE Practice Question and Answer

Q: The first 8 alphabets are written down at random. what is the probability that the letters b,c,d,e always come together ? 2291 0

  • 1
    1/7
    Correct
    Wrong
  • 2
    8!
    Correct
    Wrong
  • 3
    7!
    Correct
    Wrong
  • 4
    1/14
    Correct
    Wrong
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Answer : 4. "1/14"
Explanation :

Answer: D) 1/14 Explanation: The 8 letters can be written in 8! ways.n(S) = 8!Let E be the event that the letters b,c,d,e always come together when the first 8 alphabets are written down.Now the letters a, (bcde), f, g and h can be arranged in 5! ways.The letters b,c,d and e can be arranged themselves in 4! ways.n(E) = 5! x 4!Now, the required P(E) = n(E)/n(S) = 5! x 4!/8! = 1/14Hence the answer is 1/14.

Q: What sugar is found in RNA? 2290 0

  • 1
    Deoxyribose
    Correct
    Wrong
  • 2
    Ribose
    Correct
    Wrong
  • 3
    Pentose
    Correct
    Wrong
  • 4
    Sucrose
    Correct
    Wrong
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Answer : 2. "Ribose"
Explanation :

Answer: B) Ribose Explanation: RNA - ribonucleic acid is a type of nucleic acid. The sugar contained in it is called Ribose.

Q: Tractor : Trailer :: Horse : ? 2289 0

  • 1
    Saddle
    Correct
    Wrong
  • 2
    Engine
    Correct
    Wrong
  • 3
    Cart
    Correct
    Wrong
  • 4
    Stable
    Correct
    Wrong
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Answer : 3. "Cart"
Explanation :

Answer: C) Cart Explanation: Here the given words are related in such a way that, Trailer is pulled by Tractor and similarly, Cart is pulled by Horse.   Hence, Tractor : Trailer :: Horse : Cart.

Q: Who translated Mahabharata into Persian? 2289 0

  • 1
    Jahangir
    Correct
    Wrong
  • 2
    Aurangzeb
    Correct
    Wrong
  • 3
    Akbar
    Correct
    Wrong
  • 4
    Shahjahan
    Correct
    Wrong
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Answer : 3. "Akbar"
Explanation :

Answer: C) Akbar Explanation: The Mahabharata was translated into Persian at Akbar’s orders, by Faizi and 'Abd al-Qadir Bada' uni (c. 1540 – 1615) and named Razmnameh.

Q: The Peacock Throne was a famous jeweled throne that was the seat of the ________ emperors of India. 2288 0

  • 1
    Mughal
    Correct
    Wrong
  • 2
    Maurya
    Correct
    Wrong
  • 3
    Gupta
    Correct
    Wrong
  • 4
    Maratha
    Correct
    Wrong
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Answer : 1. "Mughal"
Explanation :

Answer: A) Mughal Explanation: The Peacock Throne was a famous jeweled throne that was the seat of the Mughal emperors of India. It was commissioned in the early 17th century by emperor Shah Jahan and was located in the Red Fort of Delhi.

Q: If (2a + 3b)/(5a - 3b) = 23/5 , then the value of ba is ? 2288 0

  • 1
    5
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 3. "20"
Explanation :

Answer: C) 20 Explanation: Given (2a + 3b)/(5a - 3b) = 23/5 => 10a + 15b = 115a - 69b=> 105a = 84b => 5a = 4b a/b = 4/5 => a=4 & b=5=> bxa = 5x4 = 20.

Q: Which word in the dictionary is spelled incorrectly? 2288 0

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Answer :
Explanation :

Incorrectly is the only word which is spelled incorrectly in the dictionary.

Q: The coldest planet in the solar system is ? 2287 0

  • 1
    Venus
    Correct
    Wrong
  • 2
    Jupiter
    Correct
    Wrong
  • 3
    Uranus
    Correct
    Wrong
  • 4
    Pluto
    Correct
    Wrong
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Answer : 3. "Uranus"
Explanation :

Answer: C) Uranus Explanation:

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