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Iron Ion

A yellow colo...

Question

A yellow coloured subatance changed into brown colour when it was kept in sunlight . What is that substance

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Solution

Silver bromide(AgBr)

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Q. A student carries out the decomposition reaction of lead nitrate to form three simpler substances. One of the substances formed during this reaction is a brown coloured gas whereas another substance formed is a yellow coloured solid.
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C O_{2}

(g) under pressure is passed into

N a_{2} C r O_{4}

(aq), yellow colour solution changes to another coloured solution. What is it ?

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