1.

Which one of the following metals will give blue ash when its salt is heated with \[N{{a}_{2}}C{{O}_{3}}\] solid and \[Co{{\left( N{{O}_{3}} \right)}_{2}}\] on a charcoal piece [MNR 1987]

A. \[Cu\]
B. \[Mg\]
C. \[Al\]
D. \[Zn\]
Answer» D. \[Zn\]


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