Question
Chemistry Question on d -and f -Block Elements
Photographic plates and films have an essential ingredient of
A
silver nitrate
B
silver bromide
C
sodium chloride
D
oleic acid
Answer
silver bromide
Explanation
Solution
The photographic plate of film consists of a glass plate or thin strip of celluloid which is coated with the thin layer of an emulsion of silver bromide dispersed in gelatin.