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Compounds Containing Nitrogen question

2023 · 24 Jan · Shift 2 · Q14
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Compounds Containing Nitrogen question

2023 · 24 Jan · Shift 2 · Q14

JEE MainChemistryCompounds Containing NitrogenMCQ+4 / −1
Given below are two statements: Statement I : Pure Aniline and other arylamines are usually colourless. Statement II : Arylamines get coloured on storage due to atmospheric reduction. In the light of the above statements, choose the most appropriate answer from the options given below :
  1. A
    Both Statement I and Statement II are correct
  2. B
    Statement I is correct but Statement II is incorrect
  3. C
    Both Statement I and Statement II are incorrect
  4. D
    Statement I is incorrect but Statement I is correct
View written solutionFree

Correct answer: B

  1. Evaluate Statement I

    Statement I says: Pure aniline and other arylamines are usually colourless.

    This is correct.

    • Pure aniline is a colourless oily liquid.
    • Many pure arylamines are colourless in the fresh state.
    • They may appear yellow or brown only after exposure to air for some time.

  2. Evaluate Statement II

    Statement II says: Arylamines get coloured on storage due to atmospheric reduction.

    This is incorrect.

    • Arylamines like aniline become coloured on storage because they undergo oxidation by atmospheric oxygen, not reduction.
    • Oxidation leads to formation of coloured impurities.

  3. Choose the correct option

    • Statement I: Correct
    • Statement II: Incorrect

    Therefore, the correct option is:

    B\boxed{\text{B}}B​

  4. Compare with stored answer

    • Derived answer: B
    • Stored correct answer: B

    These match.

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