Question

Why there are long chimneys in factories

Answer 1

this is due to the reason that factories release gases that are highly toxic and can lead to various environmental concerns so to prevent land plants and animals from such issues they are made long so that it is released up
hope it helps u

Answer 2

there are long chimneys in factory because in the factory smoke coming out of the chimneys are very toxic if they build the chimney so small then it will spread it into the place.thats why factory have long chimneys