Question

Burning of fossil fuel is the main cause of
(a) Nitrogen oxide pollution
(b) Nitrous oxide pollution
(c) Sulphur dioxide pollution
(d) Nitric oxide pollution
(e) Both A and D

Answer 1

Hint:The air is polluted by poisonous gases and undesirable substances which are released by the burning of fossil fuels.

Complete answer:The primary sources of air pollution are the burning of fossil fuels like petroleum, natural gas and coal.
When such fossil fuels have burned a variety of oxides of Nitrogen are released.

Additional information: Air pollution: air pollution is the addition of materials or chemicals into the atmosphere in such concentration that they begin to exert their harmful effects on humans and other species.
Primary air pollutants are those which are released by the direct burning of fossil fuels. These substances are known as primary air pollutants. These include soot released from unburned fuels, sulphur dioxide, ammonia, oxide of nitrogen, carbon monoxide, lead and hydrocarbons.
The secondary air pollutants are poisonous substances that are formed from the primary air pollutants. These include PAM, aldehydes, sulphuric acid, peroxides etc.
Naturally, the dinitrogen and dioxygen present in the air is non-reactive but when the fossil fuels are burnt these two combine and significant amounts of oxides of nitrogen are formed.

So, the correct answer is ‘Nitrogen oxide pollution’

Note:Tobacco and annual BGA plants are used to show the presence of ozone. Lichens are biological indicators of air pollution caused by SO2
The burning of fossil fuels and deforestation are increasing the concentrations of carbon dioxide and other greenhouse gases in the atmosphere. As a result, Earth has warmed an average of 0.8°C (1.4°F) since 1900 and is projected to warm 1–6°C (2–11°F) more by the year 2100
Moreover, fossil fuels, such as oil, coal, and natural gas, are the source of 80% or more of the energy used in most developed nations.