Ozone Depletion in the Stratosphere MCQs and Answers

Are you looking for Ozone Depletion in the Stratosphere MCQs and Answers for medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-16 (Environmental Issues).

Here we composed these Ozone Depletion in the Stratosphere MCQs and Answers after reading the chapter on Environmental Issues from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.

Ozone Depletion in the Stratosphere MCQs and Answers

1. In which part of the atmosphere is the good ozone found?

a) Ionosphere

b) Stratosphere

c) Lithosphere

d) Hydrosphere

Answer: b


2. How is the thickness of the ozone in a column of air from the ground to the top of the atmosphere measured?

a) Dobson units

b) Hertz

c) Centimeter

d) Ampere

Answer: a


3. Who enhances the degradation of ozone?

a) Hydrogen

b) Chlorofluorocarbons

c) Oxygen

d) Water vapors

Answer: b


4. In which region is the depletion of ozone particularly marked?

a) Equatorial region

b) Temperate region

c) Tropical region

d) Antarctic region

Answer: d


5. What does the continuous depletion of ozone lead to?

a) Proper rains

b) Ozone formation

c) Ozone hole

d) Good yield

Answer: c


6. Which of the following is an effect of the high dose of UV-B?

a) Night-blindness

b) Snow-blindness

c) Fatigue

d) Nausea

Answer: b


7. Which protocol was signed to control the emission of ozone-depleting substances?

a) France Protocol

b) Germany Protocol

c) India Protocol

d) Montreal Protocol

Answer: d


The stratosphere is a layer of the Earth’s atmosphere that sits above the troposphere and below the mesosphere. The stratosphere is home to the ozone layer, which protects us from the harmful ultraviolet radiation of the sun.

Over the past few decades, the ozone layer has been depleted by human activity, leading to a rise in UV radiation levels at the Earth’s surface. This can cause a range of health problems, including skin cancer, cataracts, and immunodeficiency disorders.

There are a number of FAQs about ozone depletion and the stratosphere. Here are some of the most frequently asked questions:

FAQs on Ozone Depletion in the Stratosphere

What is the ozone layer?

The ozone layer is a layer of the Earth’s atmosphere that contains high concentrations of ozone. Ozone is a form of oxygen that absorbs ultraviolet radiation. The ozone layer protects us from the harmful UV radiation of the sun.

What is ozone depletion?

Ozone depletion is the process by which the ozone layer is depleted. This can be caused by human activity, such as the release of chlorofluorocarbons (CFCs) into the atmosphere. CFCs react with ozone, causing it to break down.

What are the consequences of ozone depletion?

Ozone depletion can lead to a rise in UV radiation levels at the Earth’s surface. This can cause a range of health problems, including skin cancer, cataracts, and immunodeficiency disorders.

What can be done to prevent ozone depletion?

There are a number of measures that can be taken to prevent ozone depletion, such as reducing the use of CFCs, investing in renewable energy, and planting trees.

Have any other questions about Ozone Depletion in the Stratosphere? Leave a comment below and we’ll do our best to answer them!

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