Answer: (2) Colourless
Properties of CO2
- CO2 is a colourless gas
- CO2is acidic in nature
- CO2 is highly soluble
- CO2 is heavier than air
Properties of H2
- H2 is a colourless gas
- H2 is not acidic in nature
- H2 is not soluble
- H2 is less haivier than air
∴ Both CO2 and H2 are colourless gases.
