JAMB - Chemistry (1978 - No. 41)
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
pass each gas into lime water
pass each gas into water and test with litmus paper
pass each gas into concentrated sulphuric acid
expose each gas to atmospheric air
expose each gas to fumes of hydrogen chloride