Redox Reactions Ques 10
10. In which of the following reactions, there is no change in valency?
[1994]
(a) $4 $ $\mathrm{KClO}_3 \longrightarrow 3 $ $\mathrm{KClO}_4+\mathrm{KCl}$
(b) $\mathrm{SO}_2+2 $ $\mathrm{H}_2 \mathrm{~S} \longrightarrow 2 $ $\mathrm{H}_2 \mathrm{O}+3 \mathrm{~S}$
(c) $\mathrm{BaO}_2+\mathrm{H}_2 \mathrm{SO}_4 \longrightarrow \mathrm{BaSO}_4+\mathrm{H}_2 \mathrm{O}_2$
(d) $3 $ $\mathrm{BaO}+\mathrm{O}_2 \longrightarrow 2 $ $ \mathrm{BaO}_2$.
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Answer:
Correct Answer: 10.(c)
Solution: (c)
In this reaction, none of the elements undergoes a change in oxidation number or valency.
BETA
