A) Cold water
B) Hot \[NaOH\] solution
C) Conc. sulphuric acid
D) dilute \[HCl\]
Correct Answer: C
Solution :
\[Zn+{{H}_{2}}O\to ZnO+{{H}_{2}}\] \[Zn+2NaOH\to N{{a}_{2}}Zn{{O}_{2}}+{{H}_{2}}\] \[Zn+2HCl\to ZnC{{l}_{2}}+{{H}_{2}}\] \[Zn+2{{H}_{2}}S{{O}_{4}}\to ZnS{{O}_{4}}+S{{O}_{2}}+2{{H}_{2}}O\].
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