Which of the following chemicals is useful in photography?

A Aluminium hydroxide

B potassium nitrate

C Silver bromide

D Sodium chloride

Solution

Correct Answer: Option C

- The chemical that is useful in photography is Silver bromide.
-Silver bromide is a light-sensitive chemical that is used to coat photographic film and paper. When light hits silver bromide crystals, they are chemically changed. This change makes it possible to develop a latent image, which can then be fixed to create a permanent image.

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