IIT JEE Practice Question and Answer

Q: How many words can be formed with or without meaning by using three letters out of k, l, m, n, o without repetition of alphabets. 1441 0

  • 1
    60
    Correct
    Wrong
  • 2
    120
    Correct
    Wrong
  • 3
    240
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 1. "60"
Explanation :

Answer: A) 60 Explanation: Given letters are k, l, m, n, o = 5 number of letters to be in the words = 3 Total number of words that can be formed from these 5 letters taken 3 at a time without repetation of letters = 5P3 ways. ⇒ 5P3 = 5 x 4 x 3 = 60 words.

Q: What is formed by all the ecosystems of the earth? 1440 0

  • 1
    Biosphere
    Correct
    Wrong
  • 2
    Troposphere
    Correct
    Wrong
  • 3
    Stratosphere
    Correct
    Wrong
  • 4
    Ionosphere
    Correct
    Wrong
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Answer : 1. "Biosphere"
Explanation :

Answer: A) Biosphere Explanation: A biosphere is the sum of all the ecosystems established on planet Earth. An ecosystem is an area in which the plants and animals all interact to create a living environment. Therefore ecosystem is a smaller unit of earth, all ecosystems together form the earth.

Q: 3 : 12 :: 5 : ? 1440 0

  • 1
    17
    Correct
    Wrong
  • 2
    30
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    32
    Correct
    Wrong
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Answer : 2. "30"
Explanation :

Answer: B) 30 Explanation: 332 + 3 = 12552 + 5 = 30

Q: Simplify  413 + 215 + 414 = ? 1439 0

  • 1
    10 47/60
    Correct
    Wrong
  • 2
    11 45/73
    Correct
    Wrong
  • 3
    11 47/36
    Correct
    Wrong
  • 4
    10 35/48
    Correct
    Wrong
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Answer : 1. "10 47/60"
Explanation :

Answer: A) 10 47/60 Explanation: The given equation is in Mixed fraction. Now to solve this type of fractions, 413 + 215 + 414 =?? = 4 + 2 + 4 + 13 + 15 + 14 ? = 10 + 4760? = 104760

Q: The World Music Day is celebrated across the world on 1438 0

  • 1
    June 26
    Correct
    Wrong
  • 2
    June 21
    Correct
    Wrong
  • 3
    June 17
    Correct
    Wrong
  • 4
    June 11
    Correct
    Wrong
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Answer : 2. "June 21"
Explanation :

Answer: B) June 21 Explanation: The World Music Day is celebrated across the world on 21 June.   The day is also known as 'Fete de la Musique' after a music festival that began in France in 1982.   This Day was first celebrated on 21st June 1982.

Q: What are the end products of cellular respiration? 1437 0

  • 1
    ATP, Glucose
    Correct
    Wrong
  • 2
    Glucose, Oxygen
    Correct
    Wrong
  • 3
    Oxygen, Water
    Correct
    Wrong
  • 4
    ATP, Water
    Correct
    Wrong
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Answer : 4. "ATP, Water"
Explanation :

Answer: D) ATP, Water Explanation: Cellular respiration is the three-step process by which cells make ATP using glucose and oxygen. Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP, waste products include carbon dioxide and water.

Q: When is 99 more than 100? 1436 0

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Answer :
Explanation :

A microwave. Generally when you run a microwave for '99' it runs for 1 minute and 39 seconds. '100' runs for 1 minute.

Q: What is the currency of South Korea? 1435 0

  • 1
    Krona
    Correct
    Wrong
  • 2
    Zloty
    Correct
    Wrong
  • 3
    Won
    Correct
    Wrong
  • 4
    Nakfa
    Correct
    Wrong
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Answer : 3. "Won"
Explanation :

Answer: C) Won Explanation:

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