Question

Consider the following compounds :

(i) Sulphur dioxide

(ii) Hydrogen peroxide

(iii) Ozone

Among these compounds, those which can act as bleaching agents would include :

• A. 1 and 3
• B. 2 and 3
• C. 1 and 2
• D. 1, 2 and 3

Answer 1

Answer: (D)

1, 2 and 3

Answer 2

H2S acts as strong reducing agent with nitric acid and acidified KMnO4 .

2HNO3 + H2S $\longrightarrow$2H2O + NO2 + S.