Ozone

Q. Which of the following are sources of CFCs?

1. Sprays
2. Fire Extinguishers
3. Paints
4. Refrigerators

Q.

Ozone layer blocks the radiations of wavelength

1. less than $3\times {10}^{-7}m$

2. equal to $3\times {10}^{-7}m$

3. more than $3\times {10}^{-7}m$

4. All of the above

Q.

The ozone layer protects the earth from?

Q.

Mention the significance of the ozone layer ?

Q. A single Chlorine atom is capable of decaying about ______ ozone molecules.

1. ten
2. one thousand
3. one lakh
4. one hundred

Q. What was unusual about the ozone layer above Antarctica?

1. It was too thick.
2. The thickness had depleted.
3. It had disappeared.
4. There was a new constituent gas.

Q.

Ozone is formed by how many atoms of oxygen?

1. 1

2. 2

3. 3

4. 4

Q. Two atoms of oxygen element come together to form _____.

1. oxygen gas
2. ozone
3. tetraoxygen
4. monoxide

Q.

How ozone is formed in the atmosphere? How does it protect living beings from harmful radiations of the sun?

Q.

Give the function of ozone layer.