IIT JEE Practice Question and Answer

Q: What is the currency of South Korea? 1027 0

  • 1
    Krona
    Correct
    Wrong
  • 2
    Zloty
    Correct
    Wrong
  • 3
    Won
    Correct
    Wrong
  • 4
    Nakfa
    Correct
    Wrong
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Answer : 3. "Won"
Explanation :

Answer: C) Won Explanation:

Q: There are five bags. In the first bag we put some fruits. Each bag the number of fruits is reduced by 1/4. The last bag contains 4. Then the number of fruits in the first bag is ? 1025 0

  • 1
    2596
    Correct
    Wrong
  • 2
    1024
    Correct
    Wrong
  • 3
    256
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
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Answer : 2. "1024"
Explanation :

Answer: B) 1024 Explanation: Fruits reduced by 1/4.Total no. of bags N = 5Formula to find no. of fruits in 1st bag = 4^nLast Bag = 4 fruits.That means, 4th bag = 4 x 4 = 16 fruits3rd bag = 16 x 4 = 64 fruits2nd bag = 64 x 4 = 256 fruits1st bag = 256 x 4= 1024 fruits.

Q: Simplify  413 + 215 + 414 = ? 1025 0

  • 1
    10 47/60
    Correct
    Wrong
  • 2
    11 45/73
    Correct
    Wrong
  • 3
    11 47/36
    Correct
    Wrong
  • 4
    10 35/48
    Correct
    Wrong
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Answer : 1. "10 47/60"
Explanation :

Answer: A) 10 47/60 Explanation: The given equation is in Mixed fraction. Now to solve this type of fractions, 413 + 215 + 414 =?? = 4 + 2 + 4 + 13 + 15 + 14 ? = 10 + 4760? = 104760

Q: Which part of the respiratory system does emphysema damage? 1025 0

  • 1
    Nose
    Correct
    Wrong
  • 2
    Lungs
    Correct
    Wrong
  • 3
    Trachea
    Correct
    Wrong
  • 4
    Mouth
    Correct
    Wrong
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Answer : 2. "Lungs"
Explanation :

Answer: B) Lungs Explanation: Emphysema is a condition that involves damage to the walls of the air sacs (alveoli) of the lung i.e, primarily causes shortness of breath due to over-inflation of the alveoli.   First, emphysema causes holes to gradually form inside the lungs' air sacs, thereby weakening their internal structure and inhibiting the exchange of oxygen and carbon dioxide.

Q: In how many ways can the letters of the word 'LEADER' be arranged ? 1024 0

  • 1
    360
    Correct
    Wrong
  • 2
    420
    Correct
    Wrong
  • 3
    576
    Correct
    Wrong
  • 4
    220
    Correct
    Wrong
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Answer : 1. "360"
Explanation :

Answer: A) 360 Explanation: No. of letters in the word = 6No. of 'E' repeated = 2Total No. of arrangement = 6!/2! = 360

Q: What is the number that should come in the place of question mark ? 1050    420    168     67.2     ? 1024 0

  • 1
    19.11
    Correct
    Wrong
  • 2
    14.25
    Correct
    Wrong
  • 3
    10.752
    Correct
    Wrong
  • 4
    26.88
    Correct
    Wrong
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Answer : 4. "26.88"
Explanation :

Answer: D) 26.88 Explanation: Given series follows the rule of 1050/2.5 = 420420/2.5 = 168168/2.5 = 67.2so 67.2/2.5 = 26.88

Q: "The Law of Kepler" is related with which among the following ? 1023 0

  • 1
    Planetary Motion
    Correct
    Wrong
  • 2
    Law of Conservation of energy
    Correct
    Wrong
  • 3
    Law of Gravitation
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Planetary Motion"
Explanation :

Answer: A) Planetary Motion Explanation: Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun. Kepler’s three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. (3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.

Q: Rifath Sharook has designed the world’s lightest satellite “KalamSat”. He hails from which country  ? 1022 0

  • 1
    Russia
    Correct
    Wrong
  • 2
    Pakistan
    Correct
    Wrong
  • 3
    Dubai
    Correct
    Wrong
  • 4
    India
    Correct
    Wrong
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Answer : 4. "India"
Explanation :

Answer: D) India Explanation: Indian teen Rifath Sharook from Tamil Nadu has designed the world’s lightest & smallest satellite named “KalamSat”. The satellite weighs only 64 grams and will be launched by NASA on June 21, 2017. With this, he will become the first Indian student to have his experiment launched by NASA. The main role of the satellite will be to demonstrate the performance of 3-D printed carbon fibre. The satellite has been designed in a way which will have a 240-minute mission in space and will operate for 12 minutes in a micro-gravity environment of space.

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