Question : Match the gases in column I with their odour in column II.
Option 1: A – 1, B – 2, C – 3
Option 2: A – 2, B – 1, C – 3
Option 3: A – 2, B – 3, C – 1
Option 4: A – 3, B – 1, C – 2
Correct Answer: A – 2, B – 1, C – 3
Solution : The correct option is A – 2, B – 1, C – 3 .
Carbon dioxide (CO 2 ) is a colourless, odourless gas. Hydrogen sulphide (H 2 S) is a colourless gas with the smell of rotten eggs. Sulphur dioxide (SO 2 ) is a colourless gas with a pungent smell. CO 2 is used in carbonated beverages. H 2 S is used in the petroleum industry. SO 2 is employed in the production of sulphuric acid and as a preservative in winemaking.
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