Question

The only natural source of sulphur dioxide is ............ which contribute 2 $\times {10}^9$ kg to 5$\times {10}^9$ kg sulphur per year.

• A. Acid rain
• B. Sea
• C. Volcanoes
• D. Industrial waste

Answer 1

The correct option is C Volcanoes

Sulphur dioxide is a colourless gas with a pungent, irritating odour and taste. It is highly soluble in water forming weakly acidic sulphurous acid. Natural sources of sulphur dioxide include volcanoes and hot springs.