CFCs

Q. The ozone layer in the earth’s atmosphere absorbs ________ radiation coming from the sun and protects the living organisms on the earth.

1. X-rays
2. Ultraviolet rays
3. Visible rays
4. Gamma rays

Q.

What are gamma rays??

Q. In our eyes, too much exposure to ultraviolet rays causes:

1. muscular degeneration
2. both A and B
3. cataracts
4. neither A nor B

Q.

Which of the following causes depletion of the ozone layer in the atmosphere?

1. Carbon dioxide

2. Argon

3. Chlorofluorocarbon

4. Nitrogen