You are provided with five gas jars containing SO₂, CO₂, H₂, CO and NO respectively. Select a test from A to E which will identify ANY ONE of the gases completely

• A pass each gas into lime water
• B pass each gas into water and test with litmus paper
• C pass each gas into concentrated sulphuric acid
• D expose each gas to atmospheric air
• E expose each gas to fumes of hydrogen chloride