IIT JEE Practice Question and Answer

Q: What stops one branch of government from becoming too powerful? 1684 0

  • 1
    State governments
    Correct
    Wrong
  • 2
    Every 4 years of President election
    Correct
    Wrong
  • 3
    Members of congress
    Correct
    Wrong
  • 4
    Checks and Balances
    Correct
    Wrong
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Answer : 4. "Checks and Balances"
Explanation :

Answer: D) Checks and Balances Explanation: A procedure or method called Checks and Balances stops one branch of government from becoming too powerful. In the United States, there are three branches of government: The Executive, Legislative, and Judicial.   Each has its own responsibilities and at the same time they work together to make the country run smoothly and to assure that the rights of citizens are not ignored or disallowed.   There is a clear separation of powers between them.   Checks and Balances limit the power within each branch.   Each branch can stop and/or override processes within other branches in manners that are outlined in federal laws, regulations, and the constitution.   This way, their powers are balanced because the branches of government have the responsibility to check each other.

Q: Which of the following is an Autotroph? 1808 0

  • 1
    Fish
    Correct
    Wrong
  • 2
    Algae
    Correct
    Wrong
  • 3
    Butterfly
    Correct
    Wrong
  • 4
    Mushroom
    Correct
    Wrong
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Answer : 2. "Algae"
Explanation :

Answer: B) Algae Explanation: Here from the above options, Algae is an Autotroph. Autotrophs :  An Autotroph is also called as Producer, is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.

Q: Which is the gas used for making vegetables and vanaspathi from vegetable oils? 5783 0

  • 1
    Hydrogen
    Correct
    Wrong
  • 2
    Nitrogen
    Correct
    Wrong
  • 3
    Argon
    Correct
    Wrong
  • 4
    Helium
    Correct
    Wrong
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Answer : 1. "Hydrogen"
Explanation :

Answer: A) Hydrogen Explanation: Hydrogen gas is used for making vegetables and vanaspathi from vegetable oils. As it is colourless, odourless, tasteless, flammable gaseous substance, it is added to oils to make them more solid or spreadable. The use of hydrogenation helps to prolong the shelf life of the food and maintain flavour stability.

Q: Find the Odd One Out of the following Number Series? 3, 14, 36, 67, 113, 168 4803 0

  • 1
    14
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    67
    Correct
    Wrong
  • 4
    113
    Correct
    Wrong
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Answer : 3. "67"
Explanation :

Answer: C) 67 Explanation: Here the given number series is 3, 14, 36, 67, 113, 168 It follows a pattern that 3 3 + 1 x 11 = 3 + 11 = 14 14 + 2 x 11 = 14 + 22 = 36 36 + 3 x 11 = 36 + 33 = 69 69 + 4 x 11 = 69 + 44 = 113 113 + 5 x 11 = 113 + 55 = 168   Hence, the wrong number is 67.

Q: For Galvanizing Iron which of the following Metals is used? 2572 0

  • 1
    Zinc
    Correct
    Wrong
  • 2
    Lead
    Correct
    Wrong
  • 3
    Aluminium
    Correct
    Wrong
  • 4
    Copper
    Correct
    Wrong
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Answer : 1. "Zinc"
Explanation :

Answer: A) Zinc Explanation: Zinc metal is used for Galvanizing Iron.   Galvanization or Galvanizing :: Galvanization is the process of applying a protective zinc coating to steel or iron, to prevent rusting. Most common method of Galvanization is Hot-Dip Galvanizing in which parts are submerged in a bath of molten zinc.

Q: Namitha sold a powerbank which is at the cost of Rs. 1950 at a loss of 25%. Find at what cost will she have to sell it to get a profit of 25%? 1728 0

  • 1
    Rs. 3680
    Correct
    Wrong
  • 2
    Rs. 3560
    Correct
    Wrong
  • 3
    Rs. 3320
    Correct
    Wrong
  • 4
    Rs. 3250
    Correct
    Wrong
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Answer : 4. "Rs. 3250"
Explanation :

Answer: D) Rs. 3250 Explanation: Let the Cost price of the powerbank = Rs. P But given that by selling it at Rs. 1950, it gives a loss of 25% => P x 75100 = 1950=>P = 1950 x 10075 = Rs. 2600Now, to get a profit of 25% Selling Price = 2600 x 125100 = Rs. 3250.

Q: The capacity of a tank is 2400 m3.  A pump can be used both for filling and emptying the tank.  The emptying capacity of the pump is 10 m3/minute higher than its filling capacity. And also, the pump needs 8 minutes less to empty the tank than to fill it. Find the filling capacity of the pump. 2256 0

  • 1
    46 cub.m/min
    Correct
    Wrong
  • 2
    44 cub.m/min
    Correct
    Wrong
  • 3
    48 cub.m/min
    Correct
    Wrong
  • 4
    50 cub.m/min
    Correct
    Wrong
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Answer : 4. "50 cub.m/min"
Explanation :

Answer: D) 50 cub.m/min Explanation: Let filling capacity of the pump be 'F' m3/min Then, the filling capacity of the pump will be (F + 10) m3/min From the given data, 2400F - 2400F+10= 8⇒ 2400 F+10-FF(F+10) =8⇒ F2 + 10F - 3000 = 0⇒ F = 50 m3/min

Q: Kudos means 1563 0

  • 1
    blame
    Correct
    Wrong
  • 2
    shame
    Correct
    Wrong
  • 3
    fame
    Correct
    Wrong
  • 4
    angry
    Correct
    Wrong
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Answer : 3. "fame"
Explanation :

Answer: C) fame Explanation: Kudos means Praise or Congrats or Compliments. Fame is Synonym of Kudos. Blame, Shame and Angry are Antonyms of Kudos.

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