Advertisements
Advertisements
प्रश्न
“Air is a mixture”. Support this statement citing at least three evidences.
Advertisements
उत्तर
“Air is a mixture” The following are in evidences which prove that air is a mixture.
- The composition of air varies from place to place and from time to time.
- The components of air retain their individual properties.
- Liquid air has no definite boiling point.
- No energy exchange occurs when the components of air are mixed with each other.
APPEARS IN
संबंधित प्रश्न
What do you observe when Calcium is heated and then tested with moist blue and red litmus – paper?
Briefly state the importance of Nitrogen.
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
State what would happen, if the air above the earth contained mainly oxygen and no nitrogen
Write the percentage of the gases present in air.
How do the roots of land plants get oxygen for breathing?
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
What is the presence of harmful substance in the air called?
