Question

Which of the following reaction is an example of a photochemical reaction?

• A. Dissolving pottasium permanganate in water
• B. Bioluminescence in fireflies.
• C. Reaction of sodium with water
• D. Dissolving ink droplets in water

Answer 1

The correct option is B Bioluminescence in fireflies.

Bioluminescence is the production and emission of light by a living organism which is nothing but a photochemical reaction. This is commonly observed in fireflies and jellyfish.
Dissolving potassium permanganate in water creates a magenta to the purple coloured solution.
Sodium is added to water gives an explosive reaction in which sodium hydroxide and hydrogen gas are eliminated.
Dissolving ink droplets in water gives a bluish coloured solution of the dissolved pigments of ink.