Two jars \( \mathrm{A} \) and \( \mathrm{B} \) are filled with hydr...

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Two jars \( \mathrm{A} \) and \( \mathrm{B} \) are filled with hydrocarbons. \( \mathrm{Br}_{2} \)
P in \( \mathrm{CCl}_{4} \) is added to these jars. A does not decolourise

W the \( \mathrm{Br}_{2} \) solution, but \( \mathrm{B} \) decolourises. What are \( A \) and B-
(1) Alkane and alkene
(2) Alkene and alkane
(3) Both
(4) None
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