Question : What is the correct percentage by volume of various gases in Earth's atmosphere?

Option 1: 20.95% nitrogen, 78.09% oxygen and 0.04% carbon dioxide and other greenhouse gases

Option 2: 10.95% nitrogen, 88.09% oxygen and 0.09% carbon dioxide and other greenhouse gases

Option 3: 10.95% nitrogen, 78.09% oxygen and 0.03% carbon dioxide and other greenhouse gases

Option 4: 78% nitrogen, 21% oxygen and 0.03% carbon dioxide and other greenhouse gases

Question : Which of the following gases is most toxic ?

Option 1: Carbon dioxide

Option 2: Carbon monoxide

Option 3: Sulphur dioxide

Option 4: Chlorine

Question : Transboundary pollution ( or ) Acid rain is caused by:

Option 1: Carbon monoxide

Option 2: Carbon dioxide

Option 3: Hydrocarbon

Option 4: Nitrogen oxide and sulphur dioxide

Question : Fire extinguishers emit which gas?

Option 1: Carbon monoxide

Option 2: Chlorine

Option 3: Carbon dioxide

Option 4: Nitrogen

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