Advertisements
Advertisements
Question
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
Advertisements
Solution
Air Pollution : Air is polluted by natural processes like volcanic eruption, crop pollination, etc. mostly it is polluted by human activities like burning of coal, wood, diesel oil, kerosene, petrol etc.
Fossil fuels contain sulphur and nitrogen as impurities. When fuels bum these substances combine with air to produce gasses like sulphur dioxide, nitrogen oxide and hydrogen sulphide. They cause many serious respiratory problems. They can destroy the ozone layer, which protects us from the ultra violet radiations of the Sun. They also cause acid rain, which damages crops and buildings.
APPEARS IN
RELATED QUESTIONS
Define the term Global warming.
Fill in the blanks :
_______ and ______ are the most common air pollutants.
Write fully balanced equation for the following :
Ca(OH)2 + CO2 →
Give reason:
A burning candle stops burning if covered with a glass tumbler
Name three different appliances where air is utilized.
What is the source of oxygen gas in air?
What is the composition of air?
How will you show that air is dissolved in water?
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
The solid form of CO2 is called dry ice which undergoes condensation.
