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Question

Which among the following statements are correct for the given redox reaction:
Pb3O4+8HClHeat−−3PbCl2+Cl2+4H2O
I. HCl is oxidised
II. HCl is reduced
III. Pb3O4 is reduced
IV. Pb3O4 is oxidised

A
I only
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B
II only
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C
I & III
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D
II & IV
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Solution

The correct option is C I & III
The chemical reaction which involves addition of oxygen or removal of hydrogen or loss of electrons is called oxidation.

The chemical reaction which involves addition of hydrogen or removal of oxygen or gain of electrons is called reduction.

In the given reaction, HCl is oxidised to Cl2 by losing hydrogen whereas Pb3O4 is reduced to PbCl2 by losing oxygen.

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