Both CO2 and H2 gases are (a) heavier than air (b) colourless (c) acidic in nature (d) soluble in water
The correct option is B colorless Explanation for correct option: B. Colorless Properties of Carbon dioxide CO2: Carbon dioxide is a chemical compound that is made up of one carbon and two oxygen atoms in which a carbon atom has a double bond with each oxygen atom. It is a colorless as well as odorless gas. It is somewhat toxic too. It is denser than air. Properties of Hydrogen H2: Hydrogen behaves as a gas at standard conditions. It is a diatomic gas that is made up of two hydrogen atoms. It is a colorless as well odorless gas. It is a non-toxic as well as a highly flammable gas. Hence, the correct option is B i.e. Colorless.
