Q21 / 160 · TS EAMCET 2020 (10 Sep Shift 2) · Chemistry

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

  • A
    Addition of hydrogen
  • B
    Addition of hydrogen bromide
  • C
    Addition of hypobromous acid
  • Correct answer
    D
    Addition of bromine

Solution

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.

Hence, the correct answer is option: 'D'.

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