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Problem

Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d) out of which ONLY ONE option is correct. Insoluble As2S3\text{As}_2\text{S}_3 is dissolved in conc. HNO3\text{HNO}_3 when a. As3+\text{As}^{3+} and S2−\text{S}^{2-} both are oxidised and HNO3\text{HNO}_3 is reduced b. As3+\text{As}^{3+} is oxidised and HNO3\text{HNO}_3 is reduced c. S2−\text{S}^{2-} is oxidised and HNO3\text{HNO}_3 is reduced d. HNO3\text{HNO}_3 is oxidised and S2−\text{S}^{2-} is reduced

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