A) \[Fe\]
B) \[Zn\]
C) \[Cn\]
D) \[Ag\]
Correct Answer: B
Solution :
\[Zn\]dissolves in conc.\[NaOH\] due to the formation of sodium zincate. \[Zn+2NaOH\xrightarrow{{}}NaZn{{O}_{2}}+{{H}_{2}}\]
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