IIT JEE Practice Question and Answer

Q: 1001 A N means 1843 0

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Answer :
Explanation :

1001 A N means 1001 Arabian Nights.   These are same as 12 S of the Z, 64 S on a C, 19 C in CB, 8 S on SS, ...

Q: What makes an election democratic? 1843 0

  • 1
    Elections should be held at regular intervals.
    Correct
    Wrong
  • 2
    The candidate preferred by the people should get elected.
    Correct
    Wrong
  • 3
    Every citizen should have one vote ad every vote should have an equal value.
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: In short, Democracy is a government "of the people, by the people, and for the people."   Definition : Democracy "is government by the people in which the supreme power is vested in the people and exercised directly by them or by their elected agents under a free electoral system."  The conditions of a democratic election are:   * Every citizen should have one vote ad every vote should have an equal value. * Voters choose from the political parties and candidates should be free to contest elections giving the voters a real choice. * Elections should be held at regular intervals. * The candidate preferred by the people should get elected. * Elections should be conducted in free and fair manner where people can choose as they really wish.

Q: A seller uses 840 gm in place of 1 kg to sell his goods. Find his actual profit/loss % When he sells his article on 4% loss on cost price ? 1842 1

  • 1
    14.28 % profit
    Correct
    Wrong
  • 2
    24.18 % profit
    Correct
    Wrong
  • 3
    14.28 % loss
    Correct
    Wrong
  • 4
    24.18 % loss
    Correct
    Wrong
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Answer : 1. "14.28 % profit"
Explanation :

Answer: A) 14.28 % profit Explanation: Let 1kg of Rs. 100 then 840gm is of Rs. 84.Now (label on can 1kg but contains 840kg ) so for customer it is of Rs. 100 and further gives 4% discount [he sells his article on 4% loss on cost price.] So now S.P = Rs. 96But actually it contains 840 gm so C.P for shopkeeper = Rs. 84S.P = Rs. 96C.P = Rs. 84Profit% = {(S.P-C.P)/C.P}x100{(96-84)/84} x 100 = 14.28571429% PROFIT.

Q: Crack the code & Unlock the Key ? 1841 0

  • 1
    062
    Correct
    Wrong
  • 2
    602
    Correct
    Wrong
  • 3
    042
    Correct
    Wrong
  • 4
    204
    Correct
    Wrong
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Answer : 3. "042"
Explanation :

Answer: C) 042 Explanation: From all the hints given,  only 042 satisfies and it unlocks the key.

Q: According to experts what percentage of trash is recyclable? 1841 0

  • 1
    16%
    Correct
    Wrong
  • 2
    36%
    Correct
    Wrong
  • 3
    72%
    Correct
    Wrong
  • 4
    90%
    Correct
    Wrong
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Answer : 4. "90%"
Explanation :

Answer: D) 90% Explanation:

Q: India derives its name from 1841 0

  • 1
    The Hindus
    Correct
    Wrong
  • 2
    The Aryans
    Correct
    Wrong
  • 3
    Indus River
    Correct
    Wrong
  • 4
    Lord Indra
    Correct
    Wrong
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Answer : 3. "Indus River"
Explanation :

Answer: C) Indus River Explanation: The name India is originally derived from the name of the river Sindhu (Indus River).

Q: Find the quadratic equations whose roots are the reciprocals of the roots of 2x2+5x+3? 1840 0

  • 1
    3x2+5x+2=0
    Correct
    Wrong
  • 2
    5x2+3x+2=0
    Correct
    Wrong
  • 3
    3x2-5x-2=0
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "3x2+5x+2=0"
Explanation :

Answer: A) A Explanation: The quadratic equation whose roots are reciprocal of 2x2+5x+3=0 can be obtained by replacing x by 1/x.   Hence, 2(1/x)(1/x)+ 5(1/x) + 3 = 0   => 3x2+5x+2=0

Q: Which player has become the first left-arm spinner to take 400 wickets in Test cricket ? 1840 0

  • 1
    Ravindra Jadeja
    Correct
    Wrong
  • 2
    Mitchell Starc
    Correct
    Wrong
  • 3
    Rangana Herath
    Correct
    Wrong
  • 4
    Kuldeep Yadav
    Correct
    Wrong
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Answer : 3. "Rangana Herath"
Explanation :

Answer: C) Rangana Herath Explanation:

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