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NEET levelSingle correct optionDifficulty 1 of 3qc117

Addition of aqueous $KSCN$ to a solution containing $Fe X^{3 +}$ produces

Aa blood-red coloration due to $[Fe (SCN)] X^{2 +}$ (and related thiocyanato complexes)
Ba deep blue precipitate
Ca white precipitate of $Fe (SCN) X_{3}$
Da bright yellow precipitate

Answer: A

Fe X^{3 +}

forms intensely blood-red thiocyanato complexes such as

[Fe (SCN)] X^{2 +}

. It is a standard confirmatory test and gives a coloured solution rather than a deep blue or white precipitate.

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