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Q.

Which of the following reactions represents "developing" in photography

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a

AgNO3+NaBr→AgBr+NaNO3

b

AgBr+2Na2S2O3→Na3AgS2O32+NaBr

c

AgBr+hv→AgBr*

d

C6H4(OH)2++2AgBr∗→C6H4O2+2HBr+2Ag

answer is D.

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Detailed Solution

The reaction involves in developing a photographic plate is:
C6H4(OH)2+2AgBr*→C6H4O2+2HBr+2Ag

In this reaction, a mild reducing agent is used to reduce maximum amount of AgBr* in silver.

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