Advertisements
Advertisements
Question
Why are chimneys provided over furnace in factories?
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
Fill in the blank
We use a ________ for measuring the temperature of a body.
Fill in the blank
In a thermometer, the commonly used liquid is _______
Select the correct alternative
The temperature of pure melting ice is
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
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.
Why do we use cooking utensils made up of copper.
Why are quilts filled with fluffy cotton?
What are the land and sea breezes? Explain their formation.
What are the effects of heat?
During day time, air blows from______ to______
