Property of sulphur dioxide due to which it is used for refining of sugar.

Sulphur dioxide affects

Van Arkel method is used for refining

Sulphur shower is due to

van Arkel method is used for the refining of

Sulphur dioxide pollution affects

State the property of sulphur dioxide which causes potassium permanganate to change its colour from purple to colourless.

Sulphur dioxide pollution is indicated by

How is sulphur dioxide gas collected ?