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TS EAMCET · Chemistry · Hydrocarbons

Which of the following can be used as the test for unsaturation with regard to colour change of reaction?

  1. A Addition of hydrogen
  2. B Addition of hydrogen bromide
  3. C Addition of hypobromous acid
  4. D Addition of bromine
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Answer & Solution

Correct Answer

(D) Addition of bromine

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Detailed explanation

Addition of bromine can be used as the test for unsaturation with regard to colour change of reaction. e.g. Unsaturated compound \(+\mathrm{Br}_2 \rightarrow\) colour of \(\mathrm{Br}_2\) rapidly disappears. i.e. Bromine water is decolourised.