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How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?

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How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?

(a) Green to orange

(b) Red to colorless

(c) Orange to green

(d) Blue to green

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(c) Orange to green

Explanation:

The color changes from orange to green due to the formation of iron (III) sulphate.

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