A) cold water
B) hot\[NaOH\]solution
C) dil. sulphuric acid
D) dilute\[HCl\]
Correct Answer: A
Solution :
Zinc, does not react with cold water. \[Zn+\underset{steam}{\mathop{{{H}_{2}}\text{O}}}\,\xrightarrow{{}}ZnO+{{H}_{2}}\] \[Zn+2NaOH\xrightarrow{{}}N{{a}_{2}}Zn{{O}_{2}}+{{H}_{2}}\] \[Zn+\underset{dill.}{\mathop{2HCl}}\,\xrightarrow{{}}ZnC{{l}_{2}}+{{H}_{2}}\] \[Zn+\underset{dill.}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,\xrightarrow{{}}ZnS{{O}_{4}}+{{H}_{2}}\]
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