IIT JEE Practice Question and Answer

Q: Which day is declared as " International Day of Sport for Development and Peace (IDSDP) " by the UN General Assembly ? 1023 0

  • 1
    5th April
    Correct
    Wrong
  • 2
    6th April
    Correct
    Wrong
  • 3
    7th April
    Correct
    Wrong
  • 4
    8th April
    Correct
    Wrong
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Answer : 2. "6th April"
Explanation :

Answer: B) 6th April Explanation: 6 April was declared as the International Day of Sport for Development and Peace (IDSDP) by the UN General Assembly. On the occasion of the 2017 International Day of Sport for Development and Peace (IDSDP), the United Nations Office on Sport for Development and Peace (UNOSDP) launches the digital campaign #WePlayTogether to encourage organizations and individuals.

Q: 5 L from A are V? 1023 0

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Answer :
Explanation :

5 L from A are V means 5 Letters from Alphabet are Vowels.   Some more of that are: 1. 7 W of the W  :  7 wonders of the world. 2. 5 T on a F       :   5 toes on a foot. 3. 12 S of the Z   : 12 signs of the zodiac. 4. 90 D in a R A 5. 9 P in SS

Q: A train is moving and crossing a man who is running on a  platform of 100 m at a speed of 8 kmph in the direction of the train, in 9 sec. If the speed of the train is 74 kmph. Find the length of the train ? 1023 0

  • 1
    202 mts
    Correct
    Wrong
  • 2
    188 mts
    Correct
    Wrong
  • 3
    165 mts
    Correct
    Wrong
  • 4
    156 mts
    Correct
    Wrong
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Answer : 3. "165 mts"
Explanation :

Answer: C) 165 mts Explanation: Let the length of the train = L mts Relative speed of train and man = 74 - 8 = 66 kmph = 66 x 5/18 m/s => 66 x 5/18 = L/9 => L = 165 mts.

Q: 36 of what number is 18? 1021 0

  • 1
    38
    Correct
    Wrong
  • 2
    42
    Correct
    Wrong
  • 3
    50
    Correct
    Wrong
  • 4
    62
    Correct
    Wrong
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Answer : 3. "50"
Explanation :

Answer: C) 50 Explanation: Let the required number be 'p' 36 of what number is 18 implies 36% of p = 18 => 36 x p/100 = 18 => p = 1800/36 => p = 50.   Hence, 36% of 50 is 18.

Q: A man has only 20-paise and 25-paise coins in a bag. If he has 50 coins in all totaling to Rs.10.25, then the number of 20-paise coins is 1020 0

  • 1
    42
    Correct
    Wrong
  • 2
    45
    Correct
    Wrong
  • 3
    38
    Correct
    Wrong
  • 4
    36
    Correct
    Wrong
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Answer : 2. "45"
Explanation :

Answer: B) 45 Explanation: Let number of 20 ps coins = x and number of 25 ps coins = y Given total coins in the bag = 50 x + y = 50.......(1) But the total money in the bag = Rs. 10.25 0.20x + 0.25y = 10.25 20x + 25y = 1025.........(2) Now multiplying (1) by 25 we get 25x+25y=1250.............(3) By solving (2) and (3) 20x + 25y = 1025; => x = 45; Then, the no. of 20 ps coins are 45.

Q: Study Of Cells Is Called 1019 0

  • 1
    Cellogysm
    Correct
    Wrong
  • 2
    Cell biology
    Correct
    Wrong
  • 3
    Cell Organism
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Cell biology"
Explanation :

Answer: B) Cell biology Explanation: The branch of biology that studies the different structures and functions of the cell is called Cell Biology or Cytology.    A cell is the smallest unit of life that can replicate independently, and cells are often called the "building blocks of life"    Cell Biology deals with : Life cycle  Structure and organisation of cell organelles and their physiological properties.  Metabolic processes  Interactions with their environment  Signalling pathways.

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Answer : 3. "Neither A nor B follows"
Explanation :

Answer: C) Neither A nor B follows Explanation: There is no indication that Indian scientists are incapable of developing enzymes. There could be any number of reasons why Indian scientists used Russian enzymes. So conclusion A does not follow. In addition, cost is not discussed in the passage at all. There is no mention of a correlation between cost and extraction of proteins. Thus, conclusion B does not follow either.

Q: An automobile financier claims to be lending money at S.I., but he includes the interest every six months for calculating the principal. If he is charging an interest of 8%, the effective rate of interest becomes ? 1016 0

  • 1
    10.25 %
    Correct
    Wrong
  • 2
    8.16 %
    Correct
    Wrong
  • 3
    9.63 %
    Correct
    Wrong
  • 4
    0.16 %
    Correct
    Wrong
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Answer : 2. "8.16 %"
Explanation :

Answer: B) 8.16 % Explanation: Let the sum be Rs. 100. Then,S.I. for first 6 months = (100 x 8 x 1) / (100 x 2) = Rs. 4S.I. for last 6 months = (104 x 8 x 1) / (100 x 2) = Rs. 4.16So, amount at the end of 1 year = (100 + 4 + 4.16) = Rs. 108.16Effective rate = (108.16 - 100) = 8.16%.

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