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Potassium Dichromate

A salt which ...

Question

A salt which will turn dark on exposure to sunlight has the formula :

K_{2} C_{2} O_{4}

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{C a C l}_{2}

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A g C l

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{F e}_{4} [{F e (C N)}_{6}]

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Solution

The correct option is C $A g C l$
When silver chloride (AgCl) is exposed to sunlight, it decomposes into elemental chlorine and metallic silver. Hence, it turns dark.

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