Assertion: Alkenes decolorizes bromine in ${C C l}_{4}$ .
Reason: Double bond is present in alkenes.

Both Assertion and Reason are correct Reason is a correct explanation of Assertion

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Both Assertion and Reason are correct Reason is not a correct explanation of Assertion

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Assertion is True Reason is False

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Assertion is False Reason is True.

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Solution

The correct option is A Both Assertion and Reason are correct Reason is a correct explanation of Assertion
The reaction of process:
${C H}_{2} = {C H}_{2} + {B r}_{2} \to C H_{2} B r - C H_{2} B r$
In this reaction, brown colour of bromine gas decolourizes due to unsaturation of alkene.

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Assertion: Alkenes decolorizes bromine in CCl4.Reason: Double bond is present in alkenes.

The correct option is A Both Assertion and Reason are correct Reason is a correct explanation of AssertionThe reaction of process:CH2=CH2+Br2→CH2Br−CH2Br In this reaction, brown colour of bromine gas decolourizes due to unsaturation of alkene.

Assertion: Alkenes decolorizes bromine in ${C C l}_{4}$ .
Reason: Double bond is present in alkenes.

The correct option is A Both Assertion and Reason are correct Reason is a correct explanation of Assertion
The reaction of process:
${C H}_{2} = {C H}_{2} + {B r}_{2} \to C H_{2} B r - C H_{2} B r$
In this reaction, brown colour of bromine gas decolourizes due to unsaturation of alkene.