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 Multiple Choice QuestionsMultiple Choice Questions

251.

Which one of the following compounds, is most acidic?

  • Cl-CH2-CH2-OH


252.

Alcoholic beverages contain :

  • isopropyl alcohol

  • n- propyl alcohol

  • ethyl alcohol

  • methyl alcohol


253.

In the reaction AH2SO4K2Cr2O7 acetone oxidation  acetic acid, A is

  • 1- propanol

  • 2- butanol

  • 2- propanol

  • ethanol


254.

Picric acid is :

  • 2, 4, 6-tribromophenol

  • sym-trinitrophenol

  • trinitrophenol

  • 2, 4, 6-trinitrotoluene


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255.

The cleavage of an aryl-alkyl ether with cold HI gives:

  • alkyl iodide and water

  • aryl iodide and water

  • alkyl iodide, aryl iodide and water

  • phenol and alkyl iodide


256.

In Lucas test an alcohol reacts immediately and gives insoluble chloride. The alcohol is

  • CH3OH

  • CH3CH2OH

  • (CH3)2CHOH

  • (CH3)3COH


257.

Glycerol is more viscous than ethanol due to

  • high molecular weight

  • high boiling point

  • many hydrogen bonds per molecule

  • Fajan's rule


258.

Toluene on treatment with CrOand (CH3CO)2O followed by hydrolysis with dil HCl gives

  • benzaldehyde

  • benzoic acid

  • phenol

  • phenylacetaldehyde


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259.

Diacidic base is

  • CH2(OH)2

  • Ca(OH)2

  • CH3CH(OH)2

  • All of these


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260.

Phenol on treatment with diethyl sulphate in presence of NaOH give

  • phenetole

  • anisole

  • diphenyl ether

  • diethyl ether


A.

phenetole

Phenol on alkylation gives phenoliv ether. Since, diethyl sulphate in the presence of NaOH acts as alkylating agent, it causes alkylation of phenol to give ethyl phenyl ether which is also called phenetole.

C2H5OH + NaOH C2H5O-Na+ + H2OC2H5O-Na+ + (C2H5)2SO4diethyl sulphate  C6H5OC2H5phentole + C2H5NaSO4


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