Question

effects on air through pollution through chimneys of factories ....in para​

Answer 1

Answer:

hii mate....

Explanation:

Effect on air..

Chimneys operate on the principle that hot air rises because it is less dense than cold air. When a chimney is filled with hot gas, that gas tends to rise because it is less dense than the air outside the house. The rising hot gas creates a pressure difference called draft which draws combustion air into the appliance and expels the exhaust gas outside.

Two factors affect the amount of draft produced by a chimney.

1. Heat: the hotter the gases in the chimney compared to the air outside, the stronger the draft.

2. Height: the taller the chimney, the more draft it will produce at a given temperature difference.