IIT JEE Practice Question and Answer

Q: Simplify the fraction? 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17) 1681 0

  • 1
    -4 (1/17)
    Correct
    Wrong
  • 2
    5 (2/17)
    Correct
    Wrong
  • 3
    -2 (1/17)
    Correct
    Wrong
  • 4
    3 (3/17)
    Correct
    Wrong
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Answer : 1. "-4 (1/17)"
Explanation :

Answer: A) -4 (1/17) Explanation: Given fraction is 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17)  It can be written as  (5 - 3 - 2 - 1) + (2/7 - 1/14 - 1/14 - 1/7) = ? +  3 (1/17)  -1 + 0 - 3 (1/17) = ? => ? = -4 (1/17)

Q: Find the odd man out of the number series? 18, 37, 76, 155, 314, 635 5429 0

  • 1
    37
    Correct
    Wrong
  • 2
    155
    Correct
    Wrong
  • 3
    314
    Correct
    Wrong
  • 4
    635
    Correct
    Wrong
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Answer : 4. "635"
Explanation :

Answer: D) 635 Explanation: Given Number series is 18     37     76     155     314     635   follows a pattern that,    18   18 x 2 +1 = 37   37 x 2 +2 = 76   76 x 2 +3 = 155   155 x 2 +4 = 314   314 x 2 +5 = 633 not 635       Hence, the odd man is 635.

Q: Glass is made of the mixture of 1495 0

  • 1
    sand and silicates
    Correct
    Wrong
  • 2
    quartz and sand
    Correct
    Wrong
  • 3
    mica and quartz
    Correct
    Wrong
  • 4
    mica and silicates
    Correct
    Wrong
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Answer : 1. "sand and silicates"
Explanation :

Answer: A) sand and silicates Explanation: A glass is made of liquid sand. You can make glass by heating ordinary sand and made into a liquid and mix with silicates to form a glass.

Q: Metals are good conductors of electricity because 1628 0

  • 1
    The atoms are lightly packed
    Correct
    Wrong
  • 2
    They contain free electrons
    Correct
    Wrong
  • 3
    They have high melting point
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 2. "They contain free electrons"
Explanation :

Answer: B) They contain free electrons Explanation: Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity. Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive.   For example, copper is used for electrical wiring because it is a good conductor of electricity.

Q: Can character data be stored in computer memory? 2102 1

  • 1
    Yes---a primitive data type is used to store characters
    Correct
    Wrong
  • 2
    No---computer memory can only store patterns
    Correct
    Wrong
  • 3
    Yes---characters are stored in special memory
    Correct
    Wrong
  • 4
    No---computers can only store numbers
    Correct
    Wrong
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Answer : 1. "Yes---a primitive data type is used to store characters"
Explanation :

Answer: A) Yes---a primitive data type is used to store characters Explanation:

Q: Rangaswamy Cup is associated with 1399 0

  • 1
    Football
    Correct
    Wrong
  • 2
    Badminton
    Correct
    Wrong
  • 3
    Cricket
    Correct
    Wrong
  • 4
    Hockey
    Correct
    Wrong
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Answer : 4. "Hockey"
Explanation :

Answer: D) Hockey Explanation:

Q: If a barometric reading is falling, this usually indicates what 1565 0

  • 1
    Increasing pressure
    Correct
    Wrong
  • 2
    Decreasing pressure
    Correct
    Wrong
  • 3
    No pressure
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Decreasing pressure"
Explanation :

Answer: B) Decreasing pressure Explanation: A barometer is a tool that measures air pressure A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure. In space, there is a nearly complete vacuum, so the air pressure is zero.

Q: What kind of apple isn't an apple? 1363 0

  • 1
    Pineapple
    Correct
    Wrong
  • 2
    Akero apple
    Correct
    Wrong
  • 3
    Adanac apple
    Correct
    Wrong
  • 4
    Aceymac apple
    Correct
    Wrong
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Answer : 1. "Pineapple"
Explanation :

Answer: A) Pineapple Explanation: Except pineapple remaining all three are types of apples. Pineapple is what kind of apple isn't an apple.

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