Which of the following reagent is used in the isomerisation of alkanes?

C u / 300^{o} C

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L i A l H_{4}

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Anhy.

A l C l_{3} / H C l

gas

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V_{2} O_{5} / 500^{o} C

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Solution

The correct option is B Anhy. $A l C l_{3} / H C l$ gas

Process of conversion of one isomer into another is called isomerisation, in this process $A l C l_{3} + H C l$ is used as catalyst under high temp. and pressure.

In isomerisation n-alkanes on heating in the presence of anhydrous $A l C l_{3}$ and $H C l$ gas isomerise to branched-chain alkanes.

Option C is correct.

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