Dimethyl ether and ethyl alcohol are from Chemistry Alcohols, Ph

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 Multiple Choice QuestionsMultiple Choice Questions

561.

Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH gives:

  • o-cresol

  • p-cresol

  • mixture of o-cresol and p-cresol

  • benzoic acid


562.

Which of the following compounds forms an addition compound with CH3MgBr2 which on hydrolysis produce a secondary alcohol ?

  • HCHO

  • CH3CHO

  • CH3OCH3

  • CH3COCH3


563.

Which of the following compounds on treatment first with NaNO2/ HCl and then coupled with phenol produces p-hydroxyazobenzene ?

  • Nitrobenzene

  • Aniline

  • Azobenzene

  • Phenol


564.

The compound used as an explosive is:

  • 2,4,6-tribromoaniline

  • 2,4,6-trinitrotoluene (TNT)

  • 1,3,5-trinitrobenzene

  • 2,4,6-trichlorotoluene


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565.

Complete the following chemical reaction

RCOOH P2O5

  • acid anhydride

  • ketone

  • aldehyde

  • ester


566.

Williamson's synthesis is used for the preparation of

  • acid

  • ester

  • ether

  • alcohol


567.

2, 4, 6-trinitro phenol is

  • tear gas

  • picric acid

  • chloropicrin

  • All of these


568.

Fruity smell is given by

  • esters

  • alcohols

  • chloroform

  • acid anhydrides


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569.

Dimethyl ether and ethyl alcohol are

  • metamers

  • homologues

  • functional isomers

  • position isomers


C.

functional isomers

(i) Metamers have different alkyl groups attached to same functional group.

(ii) Functional isomers have different functional groups.

(iii) Homologous are represented by same general formula and two successive homologous differ by CH2.

(iv) Position isomers differ in position of double bond or triple bond or functional group.

CH3—O—CH3                   CH3CH2OH

(dimethyl ether)               (ethyl alcohol)

∴ Dimethyl ether and ethyl alcohol have same formula but different functional groups.
∴ They are functional isomers.


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570.

CH3COOC2H5 with excess of C2H5MgBr and hydrolysis gives


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