Advertisements
Advertisements
प्रश्न
You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer.
Advertisements
उत्तर १
A house having windows but no ventilators should not be bought. This is because warm air is lighter than cold air and therefore, it goes up. This warm air can go outside the house mostly through ventilators. If there are no ventilators, then the warm air cannot go outside easily.
उत्तर २
No, a house which has no ventilators is not a safe or healthy house to live in. The air circulation is not there in such a house. So, it has no fresh air. Because warm air rises up and goes out through ventilators and fresh air comes in through windows
संबंधित प्रश्न
Give reasons for the following:
Two holes are made in a sealed oil tin to take out oil from it.
Write the numerical value of the atmospheric pressure on the surface of earth in pascal.
Illustrate with the help of a labelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.
Give two reasons why water is not a suitable barometric liquid.
What do the following indicate in a barometer regarding weather : Gradual rise in the mercury level?
Give reasons for the following:
The Westerlies in the Southern Hemisphere blow with greater force than those in the Northern Hemisphere.
State briefly, how and why the atmospheric pressure of a place varies with the altitude. Draw an approximate graph to illustrate this variation.
A solid weighs 2.10 N in air. It has a relative density of 8.4. How much will the body weigh if placed: In a liquid of relative density 1.2
Draw a simple diagram of a Fortin's barometer and state how it is used to measure the atmospheric pressure.
