Choose the incorrect statement. from Chemistry JEE Year 2011 Fre

Subject

Chemistry

Class

JEE Class 12

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41.

Choose the incorrect statement.

  • Primary amines show intermolecular hydrogen bonds

  • Tert-butylamine is a primary amine

  • Tertiary amines do not show intermolecular hydrogen bonds

  • Isopropylamine is a secondary amine


D.

Isopropylamine is a secondary amine

Among the given statements, statement d is the incorrect one. Isopropyl amine is a primary (1°) amine. It can be represented as-

CH3 - CH|CH3 - NH2


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42.

The monomers used for their preparation of nylon 2-nylon 6 is/are

  • caprolactam

  • alanine and amino caproic acid

  • glycine and amino caproic acid

  • hexamethylenediamine and adipic acid


43.

Zeigler-Natta catalyst is used in the preparation of

  • low density polythene

  • high density polythene

  • dacron

  • teflon


44.

The cationic detergent that is used in hair conditioners is

  • cetyltrimethyl ammonium bromide

  • sodium dodecylbenzene sulphonate

  • sodium lauryl sulphate

  • tetramethyl ammonium chloride


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45.

Salts of sorbic acid and propionic acid are used as

  • antioxidants

  • flavouring agents

  • food preservatives

  • nutritional supplements


46.

When 3-phenylpropene reacts with HBr in the presence of peroxide, the major product formed is

  • 2-bromo 1-phenylpropane

  • 1, 2-dibromo 3-phenylpropane

  • 3-(o-bromophenyl) propene

  • 1-bromo 3-phenylpropane


47.

Reaction of butanone with methylmagnesium bromide following by hydrolysis gives

  • 2-methyl-2-butanol

  • 2-butanol

  • 3-methyl-2-butanol

  • 2, 2-dimethyl-1- butanol


48.

The hydroxyl compound that gives a precipitate immediately when treated with concentrated hydrochloric acid and anhydrous zinc chloride is

  • 3-methyl-2-butanol

  • 3-methyl-1-butanol

  • 1-butanol

  • 2-methyl-2-butanol


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