A) they form oxide with air
B) they react with steam readily
C) they react with dil.\[{{H}_{2}}S{{O}_{4}}\]
D) they react with hot\[NaOH\]
Correct Answer: A
Solution :
Both Zn and Hg react with air (oxygen). On heating, they form\[ZnO\]and\[HgO\] respectively. \[2Zn+{{O}_{2}}\xrightarrow[{}]{{}}2ZnO\] \[2Hg+{{O}_{2}}\xrightarrow[{}]{{}}2HgO\]
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