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Which of the following will decolourize ${Br}_{2}$ water?

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{CH}_{2} = {CH}_{2}

Me - C \equiv C - Me

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detailed solution

Correct option is A

Bromine water can be changed in colour using ethene, butyne, and hexyne. The bromine turns into a colourless liquid after losing its original reddish-brown hue. Bromine decolorization is frequently used to check for $C-C$ double and triple bonds.

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Which of the following will decolourize Br2 water?