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 Multiple Choice QuestionsMultiple Choice Questions

211.

Which of the following does not give benzoic acid on hydrolysis?

  • Phenyl cyanide

  • Benzoyl chloride

  • Benzyl chloride

  • Methyl benzoate


212.

Waxes are esters of

  • glycerol

  • long chain alcohols

  • glycerol and fatty acid

  • long chain alcohols and long chain fatty acids


213.

Among the following, which is least acidic?

  • phenol

  • o-cresol

  • p-nitrophenol

  • p-chlorophenol


214.

The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with

  • PCl3

  • PCl5

  • SOCl2 in presence of pyridine

  • dry HCl in the presence of anhydrous ZnCl2


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215.

The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is

  • methanal

  • propanal

  • propanone

  • ethanal


216.

The reaction involved in the oil of winter green test is salicylic acid conc. H2SO4 product. The product is treated with Na2CO3 solution. The missing reagent in the above reaction is

  • phenol

  • NaOH

  • ethanol

  • methanol


217.

Lucas test is associated with

  • aldehydes

  • phenols

  • carboxylic acids

  • alcohols


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218.

Out of the compounds below the vapour pressure of (B) at a particular temperature is

                     

  • higher than that of (A)

  • lower than that of (A)

  • higher or lower than (A), depending on the size of the vessel

  • same as that of (A)


A.

higher than that of (A)

In (A) para-nitro phenol intermolecular (between two molecules) H-bonding exists while in (B) ortho- nitro phenol, intramolecular H-bonding exists. Because of the presence of intramolecular H-bonding, 'the boiling point of (B) is lower as compared to (A) and thus, (B) is more volatile, ie, has higher vapour pressure as compared to (A).


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219.

An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is

  • an aldehyde

  • a primary alcohol

  • a secondary alcohol

  • a ketone


220.

Phenol X forms a tribromo derivative, 'X' is

  • bromine in benzene

  • bromine in water

  • potassium bromide solution

  • bromine in carbon tetrachloride at 0°C


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