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Assertion : Brown ring test is not valid for $\mathrm{Fe}^{+3}$ ion.
Reason : Because $\mathrm{NO}_3^{-}$ion first gets converted into $\mathrm{NO}_2^{-}$ion.
Options:
Reason : Because $\mathrm{NO}_3^{-}$ion first gets converted into $\mathrm{NO}_2^{-}$ion.
Solution:
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Verified Answer
The correct answer is:
If assertion is true but reason is false.
In brown ring test, $\mathrm{Fe}^{2+}$ ion oxidises to $\mathrm{Fe}^{3+}$ ion, and $\mathrm{NO}_3^{-}$ion reduces to NO. Brown ring test is valid for $\mathrm{Fe}^{2+}$ ion.
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