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The formation of sulphurous acid involves ? |
A) Sulphur B) Sulphuric acid C) Sulphur dioxide D) Sulphur trioxide Correct Answer : Sulphur dioxide Explanation : Sulphur dioxide(SO2) is a colourless gas with a penetrating, choking odour. It dissolves readily in water to form an acidic solution (sulphurous acid). Sulfuric acid is a major component of acid rain. |