IIT JEE Practice Question and Answer

Q: Which is the best definition of Federalism? 1968 0

  • 1
    Federalism encourages the practice of direct democracy at the state level rather than the national level.
    Correct
    Wrong
  • 2
    The quality of federal supremacy in government.
    Correct
    Wrong
  • 3
    A happy combination of mixed government.
    Correct
    Wrong
  • 4
    Federalism enables the state and the national government to share power.
    Correct
    Wrong
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Answer : 4. "Federalism enables the state and the national government to share power."
Explanation :

Answer: D) Federalism enables the state and the national government to share power. Explanation: Federalism :: Federalism is a system based upon democratic rules and institutions in which the power to govern is shared between national and provincial/state governments, creating what is often called a federation.   Federalism is a political concept in which a group of members are bound together with a governing representative head.  Federalism enables the state and the national government to share power.

Q: In a party there are male and female members. If 15 female quit then the number of females will become double the number of males. If 45 males quit no. of female becomes five times the number of males. Find the number of females ? 1967 0

  • 1
    175
    Correct
    Wrong
  • 2
    145
    Correct
    Wrong
  • 3
    165
    Correct
    Wrong
  • 4
    135
    Correct
    Wrong
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Answer : 1. "175"
Explanation :

Answer: A) 175 Explanation: Let the number of males be 'M'Let the number of females be 'F'From the given conditions,(F-15)=2M.....(i)F=5(M-45).....(ii)By solving the equations (1) & (2) we get M = 80 Then substitute M = 80 in (1)F = 2M + 15F = 2 x 80 + 15=> F = 175Therefore, number of males = 80 and females = 175 in the party.

Q: Today is Varun's birthday. One year, from today he will be twice as old as he was 12 years ago. How old is Varun today ? 1967 0

  • 1
    25 years
    Correct
    Wrong
  • 2
    24 years
    Correct
    Wrong
  • 3
    23 years
    Correct
    Wrong
  • 4
    22 years
    Correct
    Wrong
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Answer : 1. "25 years"
Explanation :

Answer: A) 25 years Explanation: Let varun's age = x yrs. From the given conditions, x+1  =  2(x-12) x = 25 years.

Q: What is harder to catch the faster you run? 1962 0

  • 1
    Breathe
    Correct
    Wrong
  • 2
    Fire
    Correct
    Wrong
  • 3
    Water
    Correct
    Wrong
  • 4
    Time
    Correct
    Wrong
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Answer : 1. "Breathe"
Explanation :

Answer: A) Breathe Explanation: It is very hard to catch breathe when you run fast.

Q: Lightning heats the surrounding air to 1961 0

  • 1
    300 deg Cent
    Correct
    Wrong
  • 2
    3000 deg Cent
    Correct
    Wrong
  • 3
    30000 deg Cent
    Correct
    Wrong
  • 4
    300000 deg Cent
    Correct
    Wrong
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Answer : 3. "30000 deg Cent"
Explanation :

Answer: C) 30000 deg Cent Explanation: Lightning is extremely hot — a flash can heat the air around it to temperatures five times hotter than the sun’s surface. This heat causes surrounding air to rapidly expand and vibrate, which creates the pealing thunder we hear a short time after seeing a lightning flash. Lightning heats the surrounding air to about 30,000 degrees Centigrades.

Q: Statement : Let there be a signboard also indicating the directions and instructions. Assumptions :a) Signboard can be prepared without using any language.b) Signboard is the only effective tool to indicate directions. 1961 0

  • 1
    Both a and b are not sufficient
    Correct
    Wrong
  • 2
    Only a is sufficient
    Correct
    Wrong
  • 3
    Only b is sufficient
    Correct
    Wrong
  • 4
    Both a and b are sufficient
    Correct
    Wrong
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Answer : 1. "Both a and b are not sufficient"
Explanation :

Answer: A) Both a and b are not sufficient Explanation: The statement doesn't give any clue to the use of language. Hence a is not implicit. b is also not implicit because in the sentence 'only' indicates false meaning.

Q: What is the Iupac name for the compound shown below. 1961 0

  • 1
    1-Bromo-3-chlorocyclohexene
    Correct
    Wrong
  • 2
    2-Bromo-6-chlorocyclohex-1-ene
    Correct
    Wrong
  • 3
    6-Bromo-2-chlorocyclohexene
    Correct
    Wrong
  • 4
    3-Bromo-1-chlorocyclohex-1-ene
    Correct
    Wrong
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Answer : 4. "3-Bromo-1-chlorocyclohex-1-ene"
Explanation :

Answer: D) 3-Bromo-1-chlorocyclohex-1-ene Explanation: In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

Q: Galileo was an Italian Astronomer who 1960 0

  • 1
    Discovered 4 satellites of Mars
    Correct
    Wrong
  • 2
    Developed the Telescope
    Correct
    Wrong
  • 3
    Discovered that the movement of pendulum produces a regular time measurement
    Correct
    Wrong
  • 4
    Both B & C
    Correct
    Wrong
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Answer : 4. "Both B & C"
Explanation :

Answer: D) Both B & C Explanation: Galileo Galilei (1564-1642) was an Italian Astronomer who        1) Discovered 4 satellites of Jupiter 2) Developed Telescope   3) Discovered that the movement of pendulum produces a regular time measurement He is Physicist, Mathematician, inventor, and philosopher Too.

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