• Statement (I) is True: Photocatalytic oxidation of ethylene utilizes n-type semiconductor materials, primarily titanium dioxide ($\text{TiO}_2$). When illuminated with UV light (bandgap excitation $\lt 387\text{ nm}$), photo-generated holes ($h^+$) react with moisture and oxygen to produce hydroxyl radicals ($\text{OH}^\bullet$) that mineralize ethylene into $\text{CO}_2$ and $\text{H}_2\text{O}$:

• Statement (II) is False: Zeolites are crystalline aluminosilicate molecular sieves that function strictly through physical adsorption of ethylene into micro-pores, not by photocatalysis.
• Conclusion: Statement (I) is true but Statement (II) is false (Option 3).

Correct option: (3) Statement (I) is true but Statement (II) is false.