Brown ring test is used for detection of:

Ferrous

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Nitrite

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Nitrate

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Ferric

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Solution

The correct option is C Nitrate
A common nitrate test, known as the brown ring test can be performed by adding iron (II) sulfate to a solution of nitrate, then slowly adding concentrated sulfuric acid such that the acid forms a layer below the aqueous solution.

Hence, option $C$ is correct.

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Similar questions

(a) Explain with the help of a balanced equation, the brown ring test for nitric acid.

(b) Why is freshly pepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test ?

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