Which compound has coloured aqueous solution [RPMT 2002]

1.	Which compound has coloured aqueous solution [RPMT 2002]
A.	\[Zn{{(N{{O}_{3}})}_{2}}\]
B.	\[LiN{{O}_{3}}\]
C.	\[Co{{(N{{O}_{3}})}_{2}}\]
D.	\[Ba{{(N{{O}_{3}})}_{2}}\]
Answer» D. \[Ba{{(N{{O}_{3}})}_{2}}\]

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Which compound has coloured aqueous solution [RPMT 2002]

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