Question

Which among the following are man-made sources of air pollution?
a. Burning of fire wood and dung cakes
​b. Forest fires
c. Factories
d. Power plants
e. Volcanoes
f. Vehicles

• A. b, d and e
• B. a, c, and f
• C. a, c, d and f
• D. a, c, b, d and f

Answer 1

The correct option is C

a, c, d and f

There are two types of pollution: natural and man-made. Man-made pollution has a huge effect on our environment and definitely on us. Man-made sources of air pollution are:
i. Burning of firewood and dung cakes
ii. Factories
iii. Power plants
iv. Vehicles

All of these release smoke and other harmful gases into our atmosphere. The other two - forest fires and volcanic eruptions are natural and not man-made.