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CHEMISTRY TEST-XII(Sub.)TOPIC REDOX REACTIONSMark-20Time: 1Hrs.Answer the following ...(20)

1. Define the term oxidation, reduction, oxidant and reductant in terms of electron transfer.

2. Assign oxidation number to all atom in C2O42-, Mn2O3, KAuCl4.

3. what is oxidation number or oxidation state? How it is useful to identify redox reactions, oxidant , reductant?

4. Write all the applications of redox reactions.

5. Write balancing of equations of redox reactions.