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Q.

Oxidation can be defined as the terms
(I) gain of electron and hydrogen
(II) gain of oxygen and loss of electron
(III) increase in oxidation number
(IV) decrease in oxidation number
Select the correct terms

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a

I and II

b

I and III

c

I and IV

d

II and III

answer is D.

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Detailed Solution

$\underset{0}{Zn} \overset{}{\to} \underset{+ 2}{{Zn}^{2 +}} + 2 e^{-} Zn + O \overset{}{\to} ZnO$

Oxidation number increases, oxygen gained and loss of electrons is oxidation.

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