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 Multiple Choice QuestionsMultiple Choice Questions

61.

Ethyl amine reacts with nitrous acid to form :

  • C2H5OH

  • C2H5OH , N2 , H2O

  • C2H5N2+Cl-

  • C2H5NHOH , NH3


62.

The reaction of chloroform with alcoholic KOH and p toluidine form :


63.

Which one of the following does not participate in the carbylamine reaction ?

  • KOH

  • Ethanol

  • Chloroform

  • Aniline


64.

Alkyl halides react with Mg in dry ether to form :

  • magnesium halide

  • Grignard's reagent

  • alkene

  • alkyne


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65.

If phthalic acid is treated with NH3 and then it is first heated weakly then strongly, the final product formed is


66.

Which of the following will give carbylamine test?

  • CH3NH2

  • CH3NHCH3

  • CH3N(CH3)CH3

  • CH3CONH2


67.

Nitrobenzene (PhNO2Zn + NH4ClP ?

  • C6H5NH2

  • C6H5NHOH

  • C6H5-N=O

  • C6H6


68.

PhCH2Cla.q. NaCl? Catalytic hydrogenation(U)

The final product (U) is:

  • C6H5CH2CH2NH2

  • C6H5CH2CONH2

  • C6H5CH2NH2

  • C6H5CH2NHCH3


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69.

Among the following, the correct order of basicity is :

  • NH2- > OH- > RO- > RCOO-

  • NH2- > RO- > OH- > RCOO-

  • RCOO- > NH2- > RO- > OH-

  • RCOO- > RO- > NH2- > OH-


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70.

Amides are converted to amines by the following reaction :

  • Perkin

  • Claisen

  • Hofmann

  • Clemmensen


C.

Hofmann

Amides are converted to amines by Hofmann reaction .In this reaction , when an amide is heated with an aqueous solution of KOH and Br2 , it gives a primary amine with one carbon atom less .

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


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