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 Multiple Choice QuestionsMultiple Choice Questions

731.

Assertion: Boiling and melting points of amides are higher than corresponding acids.
Reason: It is due to strong intermolecular hydrogen bonding in their molecules.

  • If both assertion and reason are true and the reason is a correct explanation of the assertion.

  • If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

  • If the assertion is true but the reason is false.

  • If both the assertion and reason are false.


732.

The basicity of aniline is weaker in comparison to that of methylamine due to:

  • hyper conjugative effect of Me-group in MeNH2

  • resonance effect of the phenyl group in aniline

  • the lower molecular weight of methylamine as compared to that of aniline

  • resonance effect of -NH2 group in MeNH2


733.

An amine C3H9N reacts with benzene sulphonyl chloride to form a white precipitate which is insoluble in aq. NaOH. The amine is


734.

The reaction of aniline with chloroform under alkaline conditions leads to the formation of 

  • phenylcyanide

  • phenylisonitrile

  • phenylcyanate

  • phenylisocyanate


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735.

In the reaction,

                     A is

  • HgSO4 /H2SO4

  • Cu2Cl2

  • H3PO2 and H2O

  • H+ /H2O


 Multiple Choice QuestionsShort Answer Type

736.

Write down true products when n-butyl trimethyl amine is heated strongly.


 Multiple Choice QuestionsMultiple Choice Questions

737.

Which one of the following is called a carbylamine?

  • RCN

  • RCONH2

  • RCH= NH

  • RNC


738.

How many primary amines are possible with the formula C4H11N?

  • 1

  • 2

  • 3

  • 4


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739.

When acetamide reacts with Br2 and caustic soda, then we get :

  • acetic acid

  • bromoacetic acid

  • methyl amine

  • ethyl amine


C.

methyl amine

When acetamide reacts with Br2 and caustic soda, it forms methyl amine. This reaction is known as Hofmann- bromamide reaction. In this reaction one carbon less amine are formed from amides.

CH3CONH2 Br2/ KOH CH3NH2


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740.

Which of the following gives oxalic acid?

  • Heating of acetic acid

  • Action of nitric acid on glucose

  • Acidic hydrolysis of cyanogen

  • Strong heating of sodium formate


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