Benzyl alcohol and sodium benzoate is obtained by the action of s

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 Multiple Choice QuestionsMultiple Choice Questions

751.

The reaction of an organic compound with ammonia followed by nitration of the product gives a powerful explosive, called RDX. The organic compound is

  • phenol

  • toluene

  • glycerine

  • formaldehyde


752.

The reagent which does not give acid chloride on treating with a carboxylic acid is

  • PCl5

  • Cl2

  • SOCl2

  • PCl3


753.

Identify the organic compound which, on heating with strong solution of NaOH, partly converted into an acid salt and partly into alcohol

  • benzyl alcohol

  • acetaldehyde

  • acetone

  • benzaldehyde


754.

When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is

  • methanoic acid

  • ethanal

  • methanol

  • methanal


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755.

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y respectively are,

  • zinc dust and soda lime

  • soda lime and zinc dust

  • zinc dust and sodium hydroxide

  • soda lime and copper


756.

An organic compound is boiled with alcoholic potash. The product is cooled and acidified with HCl. A white solid separates out. The starting compound may be

  • ethyl benzoate

  • ethyl formate

  • ethyl acetate

  • methyl acetate


757.

An important reaction of acetone is autocondensation in presence of concentrated sulphuric acid to give the aromatic compound

  • mesitylene

  • mesityl oxide

  • trioxan

  • phorone


758.

A nitrogen containing organic compound gave an oily liquid on heating with bromine and potassium hydroxide solution. On shaking the product with acetic anhydride, an antipyretic drug was obtained. The reactions indicate that the starting compound is

  • aniline

  • benzamide

  • acetamide

  • nitrobenzene


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759.

Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as

  • Perkin's reaction

  • Cannizaro's reaction

  • Sandmeyer's reaction

  • Claisen condensation


B.

Cannizaro's reaction

When benzyl alcohol and sodium benzoate reacts with sodium hydroxide on benzaldehyde, the reaction is known as Cannizaro's reaction.

2C6H5CHO Cannizaro's reactionNaOH C6H5CH2OH + C6H5COONa

This reaction is given by aldehydes which do not have α-hydrogen atom.


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760.

A compound, containing only carbon, hydrogen and oxygen, has a molecular weight of 44. On complete oxidation it is converted into a compound of molecular weight 60. The original compound is

  • an aldehyde

  • an acid

  • an alcohol

  • an ether


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