IIT JEE Practice Question and Answer

Q: Raju sold an article by giving a discount of 8% for Rs. 17,940 and earn profit of 19.6 %. If he did not give discount then how much profit percentage he gets ? 1648 0

  • 1
    27%
    Correct
    Wrong
  • 2
    30%
    Correct
    Wrong
  • 3
    32%
    Correct
    Wrong
  • 4
    25%
    Correct
    Wrong
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Answer : 2. "30%"
Explanation :

Answer: B) 30% Explanation: Let the M.R.P of an article be 100 %   Selling price of article =Rs. 17940   If he give a discount of 8 % then S.P = 92 % 92 % = 17490 100 % = 19500   Now C.P of the article is    17490 x 100/119.6 = 15000   If he did not give the discount, then    Required profit percentage =

Q: What kind of creature is the heart on its head? 1648 0

  • 1
    Cockroach
    Correct
    Wrong
  • 2
    Snail
    Correct
    Wrong
  • 3
    Shrimps
    Correct
    Wrong
  • 4
    Honey bee
    Correct
    Wrong
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Answer : 3. "Shrimps"
Explanation :

Answer: C) Shrimps Explanation: A Shrimps heart is located on its head.

Q: A cuboid of dimension 24cm x 9cm x 8 cm is melted and smaller cubers are of side 3 cm is formed.find how many such cubes can be formed ? 1648 0

  • 1
    64
    Correct
    Wrong
  • 2
    56
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    40
    Correct
    Wrong
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Answer : 1. "64"
Explanation :

Answer: A) 64 Explanation: Volume of cuboid = (24 x 9 x 8) cm = 1728 cu.cmVolume of small cube = (3 x 3 x 3) cm = 27 cu.cm So, No. of small cubes formed = 1728/27 = 64.

Q: A is the father of B. But B is not the son of A. Then what is B to A? 1648 0

  • 1
    Grandfather
    Correct
    Wrong
  • 2
    Son-in-law
    Correct
    Wrong
  • 3
    Granddaughter
    Correct
    Wrong
  • 4
    Daughter
    Correct
    Wrong
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Answer : 4. "Daughter"
Explanation :

Answer: D) Daughter Explanation: The relation is father and daughter. As we go with male gender, will be son of A. But it is given in the question that B is not the son of A. Hence, te only possile is B is female and B is daughter of A.

Q: Select a suitable figure from the four alternatives that would complete the figure matrix.             (1)   (2)   (3)   (4) 1646 0

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

Answer: D) 2 Explanation: One line is increasing in each subsequent figue.

Q: Which of the following is Not a form of Energy? 1646 0

  • 1
    Heat
    Correct
    Wrong
  • 2
    Sound
    Correct
    Wrong
  • 3
    Motion
    Correct
    Wrong
  • 4
    Pressure
    Correct
    Wrong
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Answer : 4. "Pressure"
Explanation :

Answer: D) Pressure Explanation: Pressure is Not a form of Energy.   Energy : It is defined as the ability to do work. Energy comes in two basic forms. They are : 1. Potential Energy 2. Kinetic Energy   Potential Energy is any type of stored energy. It can be chemical, nuclear, gravitational, or mechanical. Kinetic Energy is found in movement. An airplane flying or a meteor plummeting each have kinetic energy. Even the tiniest things have kinetic energy, like atoms vibrating when they are hot or when they transmit sound waves. Electricity is the kinetic energy of flowing electrons between atoms.

Q: Alone I am 24th, with a friend I am 20. Another friend and I am unclean. What am I? 1646 0

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Answer :
Explanation :

The answer is 'X'. 1. It is the 24th letter in the alphabetical order. 2. XX (20 in Roman) 3. XXX is used to refer dirty.

Q: Which part of the flame is the hottest? 1645 0

  • 1
    Blue Zone
    Correct
    Wrong
  • 2
    Luminous Zone
    Correct
    Wrong
  • 3
    Dark Zone
    Correct
    Wrong
  • 4
    Non - Luminous Zone
    Correct
    Wrong
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Answer : 1. "Blue Zone"
Explanation :

Answer: A) Blue Zone Explanation: Blue Zone is the hottest part of the flame that is where the flame has the most Oxygen and you are getting complete combustion. It is about 1400 degrees Centigrades. The Reddish part (Non - Luminous Zone) is the coolest part, about 800 deg C.

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