What is the main cause of acid rain?
Sulfur dioxide and nitrogen oxides
Acid rain is rain with a pH below about 5.6.
It forms mainly when sulphur dioxide (SO2) and nitrogen oxides (NOx), released by burning coal, oil and vehicle fuel, react with water vapour and oxygen to form sulphuric acid (H2SO4) and nitric acid (HNO3).
Carbon monoxide and methane are toxic or greenhouse gases, CFCs mainly deplete the ozone layer, and lead and mercury are heavy-metal pollutants – none of these is the main cause of acid rain.
Hence, Sulfur dioxide and nitrogen oxides.
Similar Questions
Which city of India was ranked as the world’s most polluted in the ‘World Air Quality Report 2019’ compiled by IQAir Air Visual?
Acid rain is caused by the chemical reaction that begins when compounds like sulphur dioxides and ________ are released into the air.
Fill in the blank:
The AQI category for '____' ranges from 0 to 50.
Fill in the blank:
The National Air Quality Index (AQI) is measured using ______ number of pollutants.
Important Questions from Pollution
Which of the following isnota common component of photo-chemical smog?
Which of the following is NOT the main objective of Ganga action plan?
Which of the following pollutants causes water pollution ?
Presence of which pathogenic microbe in water is indication of contamination?
Which of the following isnota vehicular pollutant?
