IIT JEE Practice Question and Answer

Q: Which of the following is a Decomposition Reaction? 1732 0

  • 1
    2HgO ----> 2Hg + O2
    Correct
    Wrong
  • 2
    6NaNO3 ----> 6NaNO2 + 3O2
    Correct
    Wrong
  • 3
    ZnCO3 ----> ZnO + CO2
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: All the given reactions are Decomposition reactions. Decomposition reaction is a reaction in which only one reactant is splitted into two or more products.

Q: Lipids are insoluble in water because lipids are 1286 0

  • 1
    Hydrophobic
    Correct
    Wrong
  • 2
    Zwitter ions
    Correct
    Wrong
  • 3
    Hydrophylic
    Correct
    Wrong
  • 4
    Neutral
    Correct
    Wrong
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Answer : 1. "Hydrophobic"
Explanation :

Answer: A) Hydrophobic Explanation: Lipids are soluble in solvents of low polarity, which simply means that lipids are soluble in nonpolar solvents. This solubility property is a result of the large nonpolar regions that are indicative of the lipid molecule.

Q: What gets wetter and wetter the more it dries? 2026 0

  • 1
    Soap
    Correct
    Wrong
  • 2
    Towel
    Correct
    Wrong
  • 3
    Clothes
    Correct
    Wrong
  • 4
    Sponge
    Correct
    Wrong
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Answer : 2. "Towel"
Explanation :

Answer: B) Towel Explanation: Towel gets wetter and wetter the more it dries because we use that towel which is dried after used.

Q: Which of the following is NOT a constitutional body? 2190 0

  • 1
    National Advisory Council
    Correct
    Wrong
  • 2
    Law Commission
    Correct
    Wrong
  • 3
    Election Commission
    Correct
    Wrong
  • 4
    Finance Commission
    Correct
    Wrong
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Answer : 1. "National Advisory Council"
Explanation :

Answer: A) National Advisory Council Explanation: National Advisory Council is NOT a constitutional body.   The National Advisory Council (NAC) of India was an advisory body set up by the first United Progressive Alliance (UPA) government to advise the Prime Minister of India.

Q: Patents, Copyrights and Trademarks are examples of 1423 0

  • 1
    Short-term investments
    Correct
    Wrong
  • 2
    Fixed assets
    Correct
    Wrong
  • 3
    Long-term investments
    Correct
    Wrong
  • 4
    Intangible assets
    Correct
    Wrong
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Answer : 4. "Intangible assets"
Explanation :

Answer: D) Intangible assets Explanation: Intangible asset that consists of original creative work manifested in a tangible form that can be legally protected. Intellectual property consists of copyrights, patents, trade-marks and trade secrets. Examples include literary or artistic works, business methods and industrial processes.

Q: What is the name of the World's smallest republic which has an area of 21 sq.km.? 1779 0

  • 1
    Palermo
    Correct
    Wrong
  • 2
    Nauru
    Correct
    Wrong
  • 3
    Vatican City
    Correct
    Wrong
  • 4
    Namur
    Correct
    Wrong
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Answer : 2. "Nauru"
Explanation :

Answer: B) Nauru Explanation:

Q: Find the Odd One Out? 3 24 186 1008 5040 20160 2157 0

  • 1
    24
    Correct
    Wrong
  • 2
    20160
    Correct
    Wrong
  • 3
    186
    Correct
    Wrong
  • 4
    5040
    Correct
    Wrong
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Answer : 3. "186"
Explanation :

Answer: C) 186 Explanation: The given number series is 3  24  186  1008  5040  20160 Here  the given series follows a pattern that, 3 3 x 8 = 24 24 x 7 = 168 not 186 168 x 6 = 1008 1008 x 5 =  5040 5040 x 4 = 20160   Hence the Odd One in the number series is 186.

Q: Study of Rocks is called 1765 0

  • 1
    Geology
    Correct
    Wrong
  • 2
    Cytology
    Correct
    Wrong
  • 3
    Petrology
    Correct
    Wrong
  • 4
    Petology
    Correct
    Wrong
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Answer : 3. "Petrology"
Explanation :

Answer: C) Petrology Explanation: The scientific study of rocks is called petrology, which is an essential component of geology.

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