Which one of the following metal salts produces a blue coloured bead in cobalt nitrate charcoal cavity test?

Which one of the following metal salts produces a blue coloured bead i

1.	Which one of the following metal salts produces a blue coloured bead in cobalt nitrate charcoal cavity test?
A.	\[Z{{n}^{2+}}\]
B.	\[M{{g}^{2+}}\]
C.	\[S{{n}^{2+}}\]
D.	\[A{{l}^{3+}}\]
Answer» E.

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Which one of the following metal salts produces a blue coloured bead in cobalt nitrate charcoal cavity test?

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