A) reducing agent
B) acidic
C) oxidising agent
D) None of the above
Correct Answer: C
Solution :
[a] \[{{H}_{2}}S\] acts as a reducing agent, because it can reduce PbO into PbS. \[PbO+{{H}_{2}}S\xrightarrow{{}}PbS+{{H}_{2}}O\] [b] It is acidic in nature. In calcogens, the acidic nature of hydride increases from \[{{H}_{2}}O\] to \[{{H}_{2}}\]Te. [c] It is not an oxidising agent.
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