A mixture of magnesium chloride and calcium carbide on heating gives magnesium metal. In this process calcium carbide is:

oxidising agent

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reducing agent

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neither oxidising nor reducing agent

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dehydrating agent

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Solution

The correct option is C reducing agent
$M g C l_{2} + C a C_{2} \to C a C l_{2} + M g + 2 C$

In the above equation $C a C_{2}$ is a reducing agent because $M g$ undergoes reduction from $M g^{+ 2}$ to $M g$ .This reduction is carried out by $C a C_{2}$ .

Hence option B is correct.

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