Transition and InnerTransition Elements - Result Question 40
41. Which of the following dissolves in concentrated $NaOH$ solution?
$(1980,1 M)$
(a) $Fe$
(b) $Zn$
(c) $Cu$
(d) $Ag$
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Answer:
Correct Answer: 41. (b)
Solution:
- $Zn$ being amphoteric, dissolves in both acid and base :
$ Zn+2 NaOH \longrightarrow Na _2 ZnO _2+H _2 $
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