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Which of the following statements about the reaction is/are correct?

HgS+HCl+HNO3H2HgCl4+NO+S+H2O

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a
Hg is reduced
b
Sulphide is oxidised
c
N is reduced.
d
HNO3 is an oxidant

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detailed solution

Correct option is B

(2) S2−⟶S+2e−(Oxidised) 3e−+NO3⊖⟶NON is reduced and HNO3 is oxidising agent)

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