Which of the following statement(s) is/are incorrect in case of H

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 Multiple Choice QuestionsMultiple Choice Questions

81.

An organic compound X having molecular formula C3H11N reacts with p-toluene sulphonyl chloride to form a compound Y that is soluble in aqueous KOH. Compound X is optically active and reacts with acety lchloride to form compound Z. Identify the compound Z

  • CH3CH2CH2CH2NHCOCH3

  • CH3CH2CH(CH3)NHCOCH3

  • CH3(CH3)CHCH2NHCOCH3


82.

Diethyl amine when treated with nitrous acid yields

  • diethyl ammonium nitrite

  • ethyl alcohol

  • N-nitroso diethyl amine

  • triethyl ammonium nitrite


83.

The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is

  • triethylamine

  • trimethylamine

  • aniline

  • methylphenylamine


84.

In case of substituted aniline the group which decreases the basic strength is

  • -OCH3

  • -CH3

  • -NH2

  • -C6H5


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85.

Which of the following statement(s) is/are incorrect in case of Hofmann bromamide degradation?

  • Reaction is useful for decreasing length of carbon chain by one carbon atom

  • It gives tertiary amine

  • It gives primary amine

  • Aqueous or alco. KOH is used with bromine


B.

It gives tertiary amine

Among all the given statements, statement b is incorrect. The given statement is used to synthesise primary amine.

In this reaction, amide on reaction with Br2 in an aqueous or ethanolic solution of NaOH give 1° amine with one C atom less than that present in the amide.

RCONH2 + Br2 + 4KOH  RNH2 + 2KBr + K2CO3 + 2H2O


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86.

The amine, which reacts with p-toluenesulphonyl chloride to give a clear solution, which on acidification gives insoluble compound is

  • C2H5NH2

  • (C2H5)2NH

  • (C2H5)3N

  • CH3NHC2H5


87.

Which one of the following can be prepared by Gabriel phthalimide synthesis?

  • Aniline

  • o- toluidine

  • Benzylamine

  • N-methylethanamine


88.

0ne mole of hydrazine (N2H4) loses 10 moles of electrons in a reaction to form a new compound X. Assuming that all the nitrogen atoms in hydrazine appear in the new compound, what is the oxidation state of nitrogen in X? (Note - There is no change in the oxidation state of hydrogen in the reaction).

  • -1

  • -3

  • +3

  • +5


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89.

Which one of the following is used as a test for aliphatic primary amines?

  • Tollen's test

  • Fehling's test

  • lsocyanide test

  • Azo dye test


90.

When methanamine is treated with benzoyl chloride, the major product is

  • N-phenylethanamide

  • N-methylbenzamide

  • benzanilide

  • acetophenone


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