Advertisements
Advertisements
प्रश्न
List uses of oxygen.
Advertisements
उत्तर
- All living things use oxygen for breathing.
- Oxygen is essential for burning.
- Oxygen cylinders are used in hospitals to enable patients to breathe when they cannot breathe normally.
- Oxygen is used in gas welding.
APPEARS IN
संबंधित प्रश्न
Tick (√) the most appropriate answer.
A gas which dilutes the activity of oxygen in air is:
Write ‘true’ or ‘false for the following;
The composition of air was discovered by Lavoisier.
Name the following:
The main, rare (inert) gas present in air.
Name the following:
A process which removes carbon dioxide from the air.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The percentage of carbon dioxide in the air is between 0.2 to 0.4%.
Inhaled air contains a large amount of carbon-di-oxide.
What is not true about air?
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 aeroplanes.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
A weather cock shows the ______ in which the air is moving at that place.
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Carbon dioxide
