Advertisements
Advertisements
Question
How is light scattered by the air?
Advertisements
Solution
Scattering is the phenomenon of change in the direction of light rays when they travel through Earth's atmosphere. Air is a mixture of gases, smoke, dust and very fine particles. As the rays of light fall on these particles, these rays are spread/scattered in all directions. It is a natural phenomenon which is observed on a daily basis.
RELATED QUESTIONS
How is greenhouse effect produced?
Write the chemical name of Lime water
Name two air pollutants which cause acid rain.
Give a brief account of the discovery of air and the scientists involved.
A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
