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प्रश्न
Name three different appliances where air is utilized.
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
Complete and balance the following chemical equation.
\[\ce{HgO ->[heat]}\] ______ + _______
Write fully balanced equation for the following :
CO2 + H2O →
What are fuels?
Give reason:
Aquatic animals and plants are able to survive in the matter.
Write ‘true’ or ‘false for the following;
The major component of air is oxygen.
Name the main component of air.
When air is moving with cool and soothing, it is called a cyclone.
State whether the following statement is true or false. If false, correct them.
Air helps in the movements of sailing yachts and gliders but plays no role in the flight of birds and airplanes.
Observe the picture given in Fig. carefully and answer the following questions.
Can you comment on the air quality of the place shown in Fig?
Explain the following observations very briefly
Breathing through the mouth may harm you.
