Advertisements
Advertisements
प्रश्न
Name three different appliances where air is utilized.
Advertisements
उत्तर
- Vehicles – Run on tyres which are inflated with air.
- Brake mechanisms – Of trains and other machines, work on compressed air.
- Pumps and siphons – Work on air pressure
संबंधित प्रश्न
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
What is nitrogen-fixation?
Briefly state the importance of Carbon dioxide.
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
______ is the active component of air.
What is the composition of air?
Nitrogen gas is so cold that moisture in the air condenses on it, creating a dense fog.
Mountaineers carry oxygen cylinders with them because ______.
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Carbon dioxide
