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.
Kerosene contracts on heating.
Fill in the blank
Liquids expand _______ than the solids.
Fill in the blank
Gases expand _______ than the liquids.
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
State which expands more, when heated to the same temperature : solid, liquid or gas ?
Explain why we wear woolen clothes in winter.
Why is a ventilator provided in a room?
What are the effects of heat?
In ice cubes, the force of attraction between the water molecules is ______.
______ is the only matter on the Earth that can be found naturally in all three states.
