Silver salt used in photography is:

A g C l

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A g N O_{3}

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A g F

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A g B r

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Solution

The correct option is B $A g B r$
Silver salt used in photography is silver bromide $A g B r$ . On exposure to light, $A g B r$ is reduced to black silver.

$2 A g B r (s) l i g h t - - \to 2 A g (s) + B r_{2} (l)$

Bromide ion transfers an electron to silver ion forming silver metal.

Hence, option $D$ is correct.

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