Question : The ozone layer is formed due to reactions of:

Option 1: oxygen and ultraviolet rays

Option 2: carbon dioxide and layers of the atmosphere

Option 3: cosmic rays and layers of atmosphere

Option 4: infrared rays and ultraviolet rays

Question : Ultraviolet radiation in the stratosphere is absorbed by

Option 1: SO₂

Option 2: Ozone

Option 3: Oxygen

Option 4: Argon

Question : Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth?

Option 1: Carbon dioxide

Option 2: Oxygen

Option 3: Carbon monoxide

Option 4: Nitrogen

Question : The major harmful gas emitted by automobile vehicle which causes air pollution is

Option 1: Carbon monoxide

Option 2: Methane

Option 3: Carbon dioxide

Option 4: Ozone gas

Question : Global warming is mainly due to the accumulation of Which of the following?

Option 1: Oxides of Nitrogen

Option 2: Oxides of Sulphur

Option 3: Carbon Dioxide

Option 4: Carbon monoxide