Question

what will the action of gas on dry litmus paper and moist litmus paper

Answer 1

Answer: There will be no action on dry litmus paper. Answer: Since the gas is an oxide of a non-metal hence it will turn moist blue litmus paper to red.

hope i was helpful

Answer 2

Answer:

• The gas ( sulphur dioxide) has no effect on dry litmus paper.
• Sulphur dioxide converts moist blue litmus paper to red due to formation of sulphurous acid ( as sulphur dioxide reacts with moisture to produce acid).