An aqueous solution of a salt X turns blood red on treatment with \[CN – McqOptions

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1.	An aqueous solution of a salt X turns blood red on treatment with \[CN{{S}^{-}}\] and blue on treatment with\[{{K}_{4}}[Fe{{\left( CN \right)}_{6}}]\]. X also gives a positive chromyl chloride test. The salt X is:
A.	\[CuC{{l}_{2}}\]
B.	\[FeC{{l}_{3}}\]
C.	\[Cu{{(N{{O}_{3}})}_{2}}\]
D.	\[Fe{{(N{{O}_{3}})}_{3}}\]
Answer» C. \[Cu{{(N{{O}_{3}})}_{2}}\]

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