The most appropriate reagent to distinguish between acetaldehyde

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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71.

The most appropriate reagent to distinguish between acetaldehyde and formaldehyde is :

  • Fehling's solution

  • Tollen's reagent

  • Schiffs reagent

  • iodine in presence of base


D.

iodine in presence of base

Iodine in presence of base is used to detect presence of CH3CO group in compound.

Therefore, formaldehyde and acetaldehyde are distinguished by using I2 and base.


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72.

A polymer containing nitrogen is :

  • bakelite

  • dacron

  • rubber

  • nylon-66


73.

The conversion of acetophenone to acetanilide is best accomplished by using :

  • Beckmann rearrangement

  • Curtius rearrangement

  • Lassen rearrangement

  • Hofmann rearrangement


74.

Formation of terylene is an example of:

  • condensation polymerisation

  • addition polymerisation

  • esterification

  • saponification


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75.

The dehydration of 2-methyl butanol with conc. H2SO4 gives :

  • 2-methyl butene as major product

  • pentene

  • 2-methyl but-2-ene as major product

  • 2-methyl pent-2-ene


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