Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn Blue [MP PET 2002]

Colourless solutions of the following four salts are placed separately

1.	Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn Blue [MP PET 2002]
A.	\[KN{{O}_{3}}\]
B.	\[AgN{{O}_{3}}\]
C.	\[Zn{{(N{{O}_{3}})}_{2}}\]
D.	\[ZnS{{O}_{4}}\]
Answer» C. \[Zn{{(N{{O}_{3}})}_{2}}\]

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Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn Blue [MP PET 2002]

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