Alumina thermite process involves reduction of chromium(II) oxide with ..................... .

copper

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zinc

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iron

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aluminium

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Solution

The correct option is D aluminium
Aluminium is used in thermite process as it has high boiling point, low cost and more reactivity than many of the d-block metals. Oxidizers used are boron(III) oxide, chromium(III) oxide, iron(II,III) oxide and copper(II) oxide.

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