Question

Photolysis of water involves

• A. Excitement of water
• B. Evolution of oxygen
• C. Breakdown of water by light
• D. Splitting of water into its ions, $H^{+}$ and $OH$

Answer 1

The correct option is C Breakdown of water by light

Photolysis, as the name suggests, is the breakdown of water in the presence of sunlight to form H⁺ and O₂ and electron. This takes place during the light phase of photosynthesis in the PS-II. This creates the oxygen which is the net product of photolysis.

So, the correct option is 'Breakdown of water by light'