$A$ pink colored salt on dry heating becomes blue in colour. The salt may contain:
- A$Cu^{2+}$
- B$Fe^{2+}$
- C$Zn^{2+}$
- D$Co^{2+}$
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Similar Questions
Match the following columns:
Column-$I$ Column-$II$ $(i)$ Solvay process $(p)$ $Na_2O$ $(ii)$ Evolve $CO_2$ on heating $(q)$ $Na_2O_2$ $(iii)$ Aqueous solution is not neutral towards litmus $(r)$ $NaHCO_3$ $(iv)$ Used as air purifier in submarine $(s)$ $Na_2CO_3$
| Column-$I$ | Column-$II$ |
|---|---|
| $(i)$ Solvay process | $(p)$ $Na_2O$ |
| $(ii)$ Evolve $CO_2$ on heating | $(q)$ $Na_2O_2$ |
| $(iii)$ Aqueous solution is not neutral towards litmus | $(r)$ $NaHCO_3$ |
| $(iv)$ Used as air purifier in submarine | $(s)$ $Na_2CO_3$ |
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Which pair of substances gives the same gaseous product when they react with water?
MediumAIPMT 1994
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