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An organic compound reacted with bromine water to give a colourless solution. The ...

An organic compound reacted with bromine water to give a colourless solution. The compound is probably an
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  • A Alkene
  • B Alkanal
  • C Alkyne
  • D Alkanone
Correct Answer: Option A
Explanation:
Alkenes react in the cold with pure liquid bromine, or with a solution of bromine in an organic solvent like tetrachloromethane. The double bond breaks, and a bromine atom becomes attached to each carbon. The bromine loses its original red-brown colour to give a colourless liquid.
Alkynes also react with bromine, decolorising it though not as immediate as alkenes.

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