A) A weak base
B) A weak acid
C) An oxidizing agent
D) A mild reducing agent
Correct Answer: D
Solution :
The treatment of the exposed photographic film with reducing agents is known as developing of the film. The chemicals used for developing are known as developers. A developer is usually a weak reducing agent like potassium ferrous oxalate of an alkaline solution of pyrogallol or an alkaline solution of quinol, etc. Hence, the correct option is (d).
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