Advertisements
Advertisements
Question
Why are chimneys provided over furnace in factories?
Advertisements
Solution
Chimneys are provided over the furnace in factories. This is because the hot gases coming out of the furnace are less dense than the air. They rise up through the chimney. The smoke, fumes etc. around the furnace rush in so as to take their place and they are sucked out. Thus, the chimney helps to remove the undesired fumes, smoke etc. from the premises.
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
Heat flows from a body at a high temperature to a body at a low temperature when they are kept in contact.
Write true or false for a given statement.
Water is a bad conductor of heat.
Fill in the blank
Liquids expand _______ than the solids.
Fill in the blank
Gases expand _______ than the liquids.
Fill in the blank
Metals are _______ of heat.
Why do telephone wires sag in summer ?
State one application of thermal expansion of liquids.
Describe an experiment to show that air expands on heating.
During day time, air blows from ______ to ______.
______ is the only matter on the Earth that can be found naturally in all three states.
