Among the following the one that is not a greenhouse gas is

(1) nitrous oxide.

(2) methane.

(3) ozone.

answer : from all above options the correct answer is “(4) sulphur dioxide.“

explanation of correct answer : The gases which contribute to greenhouse effect are called greenhouse gases. These include CO2 , CH4 , H2O , ozone, chlorofluorocarbons and nitrogen oxides and also hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs)  etc. are the gases which are responsible for rising greenhouse effect.

that is why we have marked correct Answer option (4).

when some types of gases trapped the sun heat and increase the earth’s atmosphere temperature , this process is called  greenhouse effect and the gases which are responsible for this process means responsible for greenhouse effect are called greenhouse gases. sulphur dioxide is not belongs to such gases which increases the earth’s temperature.