Question

Chimneys work on the principle of​

Answer 1

Explanation:

Chimneys operate on the principle that hot air rises because it is less dense than cold air. ... 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.

Answer 2

Answer:

chimney operates in the principle that hot air rises above cold air

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