A) Cu
B) Ag
C) Zn
D) Ni
Correct Answer: C
Solution :
\[Zn+\underset{\text{Conc}\text{.}}{\mathop{NaOH}}\,\to \underset{\text{Sodium zincate}}{\mathop{N{{a}_{2}}Zn{{O}_{2}}}}\,+\underset{\text{Hydrogen}}{\mathop{{{H}_{2}}}}\,\] Thus in this reaction hydrogen gas is produced when zinc is treated with concentrated NaOH.You need to login to perform this action.
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