Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

Which one of the following is not expected to undergo iodoform reaction?

  • Propan-2-ol

  • Diphenyl methanol

  • 1-phenylethanol

  • 2-butanol


42.

Identify the combination of compounds that undergo aldol condensation followed by dehydration to produce but-2-enal

  • methanal and ethanal

  • two moles of ethanal

  • methanal and propanone

  • ethanal and propanone


43.

An organic compound with the molecular formula C8H8O forms 2,4-DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzenedicarboxylic acid. The organic compound is

  • 2-ethylbenzaldehyde

  • 2-methylbenzaldehyde

  • acetophenone

  • 3-methylbenzaldehyde


44.

Phenyl isocyanide is prepared from aniline by

  • Carbylamine reaction

  • Rosenmund's reaction

  • Koble's reaction

  • Reimer-Tiemann reaction


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45.

Gabriel's phthalimide synthesis can be used to prepare

  • ethanamine

  • N-methylmethanamine

  • benzene amine

  • N, N-dimethylmethanamine


46.

The sugar moiety present in RNA molecule is

  • β-D-2-deoxyribose

  • β-D-galactose

  • β-D-fructofuranose

  • β-D-ribose


47.

Novlac, the linear polymer used in paints is

  • copolymer of 1,3-butadiene and styrene

  • obtained by the polymerization of methyl methacrylate

  • nitial product obtained in the condensation of phenol and formaldehyde in the presence of acid catalyst

  • obtained by the polymerisation of caprolactam


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48.

The carbohydrate used as storage molecule in animal is

  • sucrose

  • glycogen

  • maltose

  • glucose


B.

glycogen

In animals, the carbohydrate used as a storage molecule is glycogen. It is synthesised and stored in liver and muscles. It consists of long polymeric chains of glucose units connected by an alpha-acetal linkage.


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