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 Multiple Choice QuestionsMultiple Choice Questions

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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.


A.

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

Amides are R-CONH2

Acids are R-COOH

Due to the presence of -NH2 group in amides, there is stronger hydrogen bonding between the amide molecules than between the acid molecules. Some acids are rather present in dimers form due to the presence of intramolecular hydrogen bonding.


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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


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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