Advertisements
Advertisements
प्रश्न
Give four uses of oxygen.
Advertisements
उत्तर
Uses of oxygen
- Oxygen is used by firemen, miners, aviators, sea divers and even by every living being.
- Oxygen is necessary for burning of fuels.
- Oxygen mixed with hydrogen as fuel produces.a flame with a very high temperature about 2800°C.
- As a fuel in spacecraft.
APPEARS IN
संबंधित प्रश्न
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
What happens when mercuric oxide is heated?
Name the three types of oxidation processes. In which of these large amount of heat and light energy are produced?
Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
Fill in the blank:
Manganese dioxide acts as a _________.
Fill in the blank:
Oxygen occupies about ______ of air by volume.
How will you identify oxygen in the laboratory ?
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
The nitric oxide gas reacts with the oxygen and water vapour to form ______ vapour.
Write ‘True’ or ‘False’ in front of following statement.
Liquid oxygen is used for burning fuel in spaceships.
Phosphorous bums with suffocating smell and gives ______.
