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Ozone Layer

📆 October 7, 2024

Total Questions: 47

1. Ultraviolet radiation from sunlight causes the reaction that produce which of the following? [U.P.P.C.S. (Pre) 2018]

Correct Answer: (c) O₃
Solution:Stratospheric ozone is formed naturally by chemical reactions involving solar ultraviolet radiation and oxygen molecules.

2. 'Ozone layer' absorbing ultra violet radiation, exists in which of the atmospheric layer? [U.P.P.C.S (Pre) 2023]

Correct Answer: (c) Stratosphere
Solution:The Ozone layer is a layer is Earth's atmosphere that absorbs most of the Sun's Ultraviolet radiation. It contains relatively high concentration of ozone. Ozone is a gas made up of three oxygen atoms (O₃).

Ozone protects life on Earth from the sun's ultraviolet (UV) radiation. 90% of the Ozone in the atmosphere sits, in the stratosphere the layer of atmosphere between about 10 and 50 kilometers altitude.

3. The radiation that is absorbed by ozone present in the atmosphere is- [U.P.P.C.S. (Pre) 2013]

Correct Answer: (c) Ultraviolet
Solution:Ozone (O₃) is a molecule formed by three atoms of oxygen. While O₂, which we normally refer to as oxygen, is essential 2 for all aerobic forms of life. Ozone is a deadly poison.

However, at the higher levels of the atmosphere, ozone performs an essential function. It shields the surface of the Earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms and is known to cause skin cancer in human beings.

4. Ozone protects the biosphere from- [U.P.P.C.S. (Pre) 2014]

Correct Answer: (b) Ultraviolet rays
Solution:Ozone (O3) is a molecule formed by three atoms of oxygen. While O₂, which we normally refer to as oxygen, is essential 2 for all aerobic forms of life. Ozone is a deadly poison. However, at the higher levels of the atmosphere, ozone performs an essential function.

It shields the surface of the Earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms and is known to cause skin cancer in human beings.

5. The ozone layer of atmosphere absorbs- [Uttarakhand P.C.S. (Pre) 2006]

Correct Answer: (c) Ultraviolet rays
Solution:Ozone (O3) is a molecule formed by three atoms of oxygen. While O₂, which we normally refer to as oxygen, is essential 2 for all aerobic forms of life. Ozone is a deadly poison.

However, at the higher levels of the atmosphere, ozone performs an essential function. It shields the surface of the Earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms and is known to cause skin cancer in human beings.

6. Ozone layer in atmosphere- [U.P.P.C.S. (Pre) 2006, U.P. Lower Sub. (Pre) 2004]

Correct Answer: (c) Provides safety to life on earth from ultraviolet
Solution:Ozone (O3) is a molecule formed by three atoms of oxygen. While O₂, which we normally refer to as oxygen, is essential 2 for all aerobic forms of life. Ozone is a deadly poison. However, at the higher levels of the atmosphere, ozone performs an essential function.

It shields the surface of the Earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms and is known to cause skin cancer in human beings.

7. Ozone layers is useful to humanity because- [M.P.P.C.S. (Pre) 1994]

Correct Answer: (b) It prevents the Sun's ultraviolet rays from reaching the Earth.
Solution:Ozone (O3) is a molecule formed by three atoms of oxygen. While O₂, which we normally refer to as oxygen, is essential 2 for all aerobic forms of life. Ozone is a deadly poison. However, at the higher levels of the atmosphere, ozone performs an essential function.

It shields the surface of the Earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms and is known to cause skin cancer in human beings.

8. Which of the following pairs is NOT correctly matched? [U.P.P.C.S. (Pre), 2018]

Correct Answer: (d) Ozone layer-Troposphere
Solution:The Earth's atmosphere is composed of several layers. The lowest layer, the troposphere, extends from the Earth's surface up to about 6 miles or 10 kilometers (km) in altitude. Virtually all human activities occur in the troposphere.

Mt. Everest, the tallest mountain on the planet, is only about 5.6 miles (9 km) high. The next layer, the stratosphere, continues from 6 miles (10 km) to about 31 miles (50 km). Most commercial airplanes fly in the lower part of the stratosphere. Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface.

Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere. The total amount has remained relatively stable during the decades that it has been measured.

9. Place where Ozone Layer is primarily found is- [U.P.P.C.S. (Pre) (Spl) 2008]

Correct Answer: (b) Stratosphere
Solution:The earth's atmosphere is divided into several layers and each layer plays an important role. The layer extending about 10-50 km is called the stratosphere.

The ozone layer is mainly found in the lower portion of the stratosphere from approximately 15 to 30 kilometres above the Earth, though the thickness varies seasonally and geographically.

The ozone layer protects the Earth from the sun UV rays. 10% of the ozone layer is found in the troposphere and 90% in the stratosphere.

10. The ozone layer is located in- [U.P.U.D.A./L.D.A. (Spl) (Mains) 2010]

Correct Answer: (b) Stratosphere
Solution:The earth's atmosphere is divided into several layers and each layer plays an important role. The layer extending about 10-50 km is called the stratosphere.

The ozone layer is mainly found in the lower portion of the stratosphere from approximately 15 to 30 kilometres above the Earth, though the thickness varies seasonally and geographically.

The ozone layer protects the Earth from the sun UV rays. 10% of the ozone layer is found in the troposphere and 90% in the stratosphere.

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