GK Quiz on Ozone Layer Depletion

The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun. Various human activities have resulted in the depletion of the ozone layer. Take the below quiz to test your knowledge on the ozone layer and its depletion.
Created On: Nov 25, 2020 10:55 IST
Modified On: Dec 16, 2020 13:35 IST
GK Quiz on Ozone Layer Depletion
GK Quiz on Ozone Layer Depletion

Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. Take the below quiz to test your knowledge on the ozone layer and its depletion. 

1. Which of the following is not the consequence of ozone layer depletion?

A.   Increased ultraviolet rays

B.  Malignant melanoma-Another form of skin cancer

C.  Cyanobacteria are sensitive to UV radiation and would be affected by its increase.

D.   Tides

Ans: D

2. Why UV radiation is higher in summer?

A.  The Sun is closer to planet earth so UV rays have a shorter distance to travel to reach us.

B.  There is more ozone in the atmosphere during summer.

C.  The sun is particularly busy in summer

D.  None of these

Ans:  A

3. Which products contain ozone-depleting substances?

1 Motorbike

2 Car with AC

3 Spray

4 Oven

5 Refrigerator

6 Pesticides

7 Fire extinguisher

Options are

A.  1,2,3,4,5,6

B.  2,3,4,6,7

C.  2,4,5,6,7

D.  2,3,4,5,6,7

Ans:  C

4. When was the first ozone hole discovered?

A.  1980s

B.  1950s

C.  1970s

D.  1990s

Ans:  C

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5. In which sphere Ozone layer depletion is found?

A.  Ionosphere

B.  Stratosphere

C.  Lithosphere

D.  None of these

Ans: B

6. The depletion in the Ozone layer is caused by:

A.  Carbon dioxide

B.  Nitrous oxide

C.  Methane

D.  Chlorofluorocarbon

Ans:  D

7. Which of the following is a prime health risk associated with greater UV radiation through the atmosphere due to the depletion of the ozone layer?  

A.  Damage to the digestive system

B.  Increased risk of liver cancer

C.  Increased risk of skin cancer

D.  Neurological disorder

Ans: C

8.Montreal protocol is related to the:

A.  Global warming

B.  Ozone layer depletion

C.   Sustainable development

D.  Food security

Ans: B

9.An ozone-depleting substance mainly used in:

I. Burning fossil fuels

II. Chimneys

III. All human activities

IV. Cooling and refrigeration applications, and in the manufacture of foam products.


A.  Only I, II

B.  Only I,II, III

C.  All

D.  Only IV

Ans: D

10.CFCs (chlorofluorocarbons) are greenhouse gases that have caused a rise of 3 degree C in the global temperatures in the past century. Name the CFC that is used in refrigerators.

A.  Carbon dioxide

B.  Methane

C.  Ammonia

D.  Freon

Ans: D

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