Question

Ozone is ____ to oxygen in sunlight.

• A. reduced
• B. oxidised
• C. corroded
• D. synthesised

Answer 1

The correct option is A

reduced

Explanation:

• The reaction corresponding to the loss of oxygen $\left(\mathrm{O}\right)$ or gain of hydrogen $\left(\mathrm{H}\right)$ by a species is called a reduction reaction.
• The reaction in which either two or more than two products are formed from a single reactant molecule is termed as decomposition reaction.
• In the presence of sunlight, Ozone $\left({\mathrm{O}}_3\right)$ decomposes to form one oxygen molecule $\left({\mathrm{O}}_2\right)$ and one oxygen atom $\left(\mathrm{O}\right)$.

${\mathrm{O}}_3\left(\mathrm{g}\right)\to {\mathrm{O}}_2\left(\mathrm{g}\right)+\mathrm{O}$

• Due to the loss of oxygen by the ozone to form oxygen molecule, the decomposition of the ozone is classified as reduction reaction.

Hence, option A is correct. Ozone is reduced to oxygen in sunlight.