Which chemical is used in developing photographic films? Photogra

Which chemical is used in developing photographic films?

A. Silver bromide

B. Hypo

C. Sodium sulphate

D. Hydroquinone

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Photographic film is a strip of transparent plastic film base coated on one side with a gelatin emulsion.
It contains small light-sensitive silver halide crystals.
It is used to record pictures.
The light sensitivity of the silver halides is key to the photographic process, that's why silver chloride, silver bromide and silver iodide, are used to make photographic film.