(i) It acts as a bleaching agent in moist conditions.

(ii) Its molecule has linear geometry.

(iii) It’s dilute solution is used as a disinfectant.

(iv) It can be prepared by the reaction of dilute H2SO4 with metal sulphide.

Correct Answers: 

(i) It acts as a bleaching agent in moist conditions.

(iii) It’s dilute solution is used as a disinfectant.

Explanation: The molecule of SO2 gas does not have linear geometry and the SO2 gas can be prepared by the reaction of dilute H2SO4 with metal sulphide.