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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
You are given a test tube with two outlets and a bottle of lime water. Using same, how would you demonstrate experimentally the presence of carbon dioxide in air.
What happens if the percentage of oxygen in the air reaches to 70%?
_______ and ______ are the two gases, which when taken together, make up about 99 percentage of air.
- Nitrogen
- carbon-di-oxide
- Noble gases
- Oxygen
How will you show that air is dissolved in water?
Why does a lump of cotton wool shrink in water?
What was the old name of nitrogen?
Give the components present in the air with a percentage?
Oxygen is used to oxidize ______.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement
Mountaineers carry oxygen ______ with them, while climbing high mountains.
Explain the following observations very briefly
Breathing through the mouth may harm you.
