IIT JEE Practice Question and Answer

Q: Round as a Dishpan, Deep as a Tub and Still the Oceans could not fill it up. What is it? 1779 0

  • 1
    Bath Tub
    Correct
    Wrong
  • 2
    A plug hole
    Correct
    Wrong
  • 3
    Sieve
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "Sieve"
Explanation :

Answer: C) Sieve Explanation: Sieve. A utensil consisting of a wire or plastic mesh held in a frame, used for straining solids from liquids.

Q: In a 40 litre mixture of alcohol & water, the ratio of alcohol and water is 5 : 3. If 20% of this mixture is taken out and the same amount of water is added then what will be the ratio of alcohol and water in final mixture? 2521 0

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

Answer: A) 1:1 Explanation: Quantity of alohol in the mixture = 40 x 5/8 = 25 lit Quantity of water = 40 - 25 = 15 lit According to question, Required ratio = 20 - 40 x 20100 x 5815 - 40 x 20100 x 38 + 40 x 20100 = 2015 - 3 + 8 = 1 : 1

Q: what is the missing number in the sequence given below? 12  9  13.50  30.37  ?  341.71 7952 0

  • 1
    87.63
    Correct
    Wrong
  • 2
    91.12
    Correct
    Wrong
  • 3
    93.41
    Correct
    Wrong
  • 4
    97.94
    Correct
    Wrong
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Answer : 2. "91.12"
Explanation :

Answer: B) 91.12 Explanation: Given number series is 12  9  13.5  30.3  ?  341.7 Here the pattern followed by the series is 12  12 x 0.75 = 9 9 x 1.5 = 13.5 13.5 x 2.25 = 30.3 30.37 x 3 = 91.12 91.12 x 3.75 = 341.71   Hence, the missing number in the sequence is 91.12.

Q: Natural Rubber is a Polymer of 2220 0

  • 1
    butadiene
    Correct
    Wrong
  • 2
    2methyl-1,3butadiene
    Correct
    Wrong
  • 3
    ethylene
    Correct
    Wrong
  • 4
    isoprene
    Correct
    Wrong
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Answer : 4. "isoprene"
Explanation :

Answer: D) isoprene Explanation: Natural Rubber is a Polymer derived from Isoprene.  Natural rubber is an addition polymer that is obtained as a milky white fluid known as Latex from a Tropical Rubber Tree.

Q: The respective ratio between the speed of a bike, a van  and lorry is 3 : 5 : 2. The speed of the van is 250 percent of the speed of the lorry which covers 360 km in 12 hours. What is the average speed of the bike and the van together? 2625 0

  • 1
    60 kmph
    Correct
    Wrong
  • 2
    62 kmph
    Correct
    Wrong
  • 3
    64 kmph
    Correct
    Wrong
  • 4
    63 kmph
    Correct
    Wrong
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Answer : 1. "60 kmph"
Explanation :

Answer: A) 60 kmph Explanation: Speed of lorry = 36012 = 30 kmph Speed of van =250100 x 30 = 75 kmph Speed of bike = 35 x 75 = 45 kmph Therefore, now required average speed of bike and van  = 75 + 452= 60 kmph.

Q: Foods that allow micro organisms to grow are called Parasites. 898 0

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

Answer: B) FALSE Explanation: No, the given statement is False. Parasites are organisms that feed on other organisms causing harm to them. Foods that allow micro organisms to grow are called Growth Mediums.

Q: Okhla Bird Sanctuary is located in 1995 0

  • 1
    Rajasthan
    Correct
    Wrong
  • 2
    West Bengal
    Correct
    Wrong
  • 3
    Maharashtra
    Correct
    Wrong
  • 4
    Uttar Pradesh
    Correct
    Wrong
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Answer : 4. "Uttar Pradesh"
Explanation :

Answer: D) Uttar Pradesh Explanation: Okhla Bird Sanctuary is located in Uttar Pradesh. Okhla Bird Sanctuary is a bird sanctuary at the Okhla barrage over Yamuna River. It is situated in Noida, Gautam Buddh Nagar district, on Delhi-Uttar Pradesh state border and known as a haven for over 300 bird species.

Q: Prophet of New India is 4579 0

  • 1
    Dayanand Saraswathi
    Correct
    Wrong
  • 2
    Sri Ramakrishna
    Correct
    Wrong
  • 3
    Swamy Vivekananda
    Correct
    Wrong
  • 4
    Raja Ram Mohan Roy
    Correct
    Wrong
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Answer : 2. "Sri Ramakrishna"
Explanation :

Answer: B) Sri Ramakrishna Explanation: Sri Ramakrishna is called as the Prophet of New India. Sri Ramakrishna (1836-86) mostly known as Ramakrishna Paramhamsa was a spiritual genius now respected in India and abroad as an outstanding saint of our times. His life and thoughts represents the highest and best of modern Hindu philosophy and practice. Reverence and admiration for him amongst Bengali elites led to the formation of the Ramakrishna Mission by his chief disciple Swami Vivekananda. His devotees look upon him as an incarnation or Avatara of the formless Supreme Brahman as described in the Vedanta while some devotees see him as an avatara of Vishnu.

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