IIT JEE Practice Question and Answer

Q: Which property would be classified as expendable? 1907 0

  • 1
    Food given to Army
    Correct
    Wrong
  • 2
    Cement
    Correct
    Wrong
  • 3
    Paint
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation: Expendable properties are those properties that are consume in use or that lose their identity in use. It also include those properties that become an integral part of other property when put to use and those properties which have an expected service life of less than one year.

Q: Fa Hien visited india during the reign of 1906 0

  • 1
    Harshavardhana
    Correct
    Wrong
  • 2
    Chandragupta Maurya
    Correct
    Wrong
  • 3
    Ashoka
    Correct
    Wrong
  • 4
    Chandragupta Vikramaditya
    Correct
    Wrong
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Answer : 4. "Chandragupta Vikramaditya"
Explanation :

Answer: D) Chandragupta Vikramaditya Explanation: Fahien came to India during the reign of┬аChandragupta Vikramaditya.

Q: Magnetic domains normally occur in 1906 0

  • 1
    copper
    Correct
    Wrong
  • 2
    silver
    Correct
    Wrong
  • 3
    iron
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 3. "iron"
Explanation :

Answer: C) iron Explanation: A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction.

Q: 1, 2, 8, 33, ? Find the next number in the given series? 1906 0

  • 1
    148
    Correct
    Wrong
  • 2
    145
    Correct
    Wrong
  • 3
    143
    Correct
    Wrong
  • 4
    141
    Correct
    Wrong
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Answer : 1. "148"
Explanation :

Answer: A) 148 Explanation: 1 x 1 + 1 x 1 = (1 + 1) = 2 2 x 2 + 2 x 2 = (4 + 4) = 8 8 x 3 + 3 x 3 = (24 + 9) = 33 33 x 4 + 4 x 4 = (132 + 16) = 148 148 x 5 + 5 x 5 = (740 + 25) = 765.

Q: What is the name of the World's smallest republic which has an area of 21 sq.km.? 1906 0

  • 1
    Palermo
    Correct
    Wrong
  • 2
    Nauru
    Correct
    Wrong
  • 3
    Vatican City
    Correct
    Wrong
  • 4
    Namur
    Correct
    Wrong
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Answer : 2. "Nauru"
Explanation :

Answer: B) Nauru Explanation:

Q: What are the Multiples of 6 and the Common Multiples of 4 and 6? 1906 0

  • 1
    12, 34, 42
    Correct
    Wrong
  • 2
    12, 18, 36,
    Correct
    Wrong
  • 3
    6, 4, 14
    Correct
    Wrong
  • 4
    4, 8, 16
    Correct
    Wrong
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Answer : 2. "12, 18, 36,"
Explanation :

Answer: B) 12, 18, 36, Explanation: The┬аMultiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, 54, 60. The┬аMultiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60. The Common Multiples of 4 & 6 upto 60 numbers are given as 12, 24, 36, 48, 60.

Q: The price of pulses has increased by 25%. The percentage of reduction that a family should effect in the use of pulses so as not to increase the expenditure on this account is ? 1906 0

  • 1
    16%
    Correct
    Wrong
  • 2
    20%
    Correct
    Wrong
  • 3
    84%
    Correct
    Wrong
  • 4
    72%
    Correct
    Wrong
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Answer : 2. "20%"
Explanation :

Answer: B) 20% Explanation: Reduction in consumption= P100+P┬аX 100%= 25100+25┬аX 100%= 20%

Q: If two cards are taken one after another without replacing from a pack of 52 cards. What is the probability for the two cards be Ace ? 1906 0

  • 1
    51/1221
    Correct
    Wrong
  • 2
    42/221
    Correct
    Wrong
  • 3
    1/221
    Correct
    Wrong
  • 4
    52/1245
    Correct
    Wrong
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Answer : 3. "1/221"
Explanation :

Answer: C) 1/221 Explanation: Total Combination of getting a card from 52 cards =┬аC152 Because there is no replacement, so number of cards after getting first card= 51 Now, Combination of getting an another card=┬аC151 Total combination of getting 2 cards from 52 cards without replacement= (C152├ЧC151)┬а There are total 4 Ace in stack. Combination of getting 1 Ace is =┬аC14 ┬а Because there is no replacement, So number of cards after getting first Ace = 3 Combination of getting an another Ace =┬аC13 Total Combination of getting 2 Ace without replacement=C14├ЧC13 Now,Probability of getting 2 cards which are Ace =C14├ЧC13C152├ЧC151┬а= 1/221.

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