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Test: Composition & Structure of Atmosphere - UPSC MCQ


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10 Questions MCQ Test - Test: Composition & Structure of Atmosphere

Test: Composition & Structure of Atmosphere for UPSC 2024 is part of UPSC preparation. The Test: Composition & Structure of Atmosphere questions and answers have been prepared according to the UPSC exam syllabus.The Test: Composition & Structure of Atmosphere MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Composition & Structure of Atmosphere below.
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Test: Composition & Structure of Atmosphere - Question 1

Which atmospheric layer contains the ozone layer, which absorbs ultraviolet radiation from the sun?

Detailed Solution for Test: Composition & Structure of Atmosphere - Question 1
The atmospheric layer that contains the ozone layer, which absorbs ultraviolet radiation from the sun, is the Stratosphere (Option B). The ozone layer plays a crucial role in protecting life on Earth from harmful UV radiation.
Test: Composition & Structure of Atmosphere - Question 2

What is the primary gas responsible for the greenhouse effect in the Earth's atmosphere?

Detailed Solution for Test: Composition & Structure of Atmosphere - Question 2
The primary gas responsible for the greenhouse effect in the Earth's atmosphere is Carbon dioxide (Option C). Carbon dioxide traps outgoing terrestrial radiation, leading to an increase in Earth's temperature.
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Test: Composition & Structure of Atmosphere - Question 3

Which gas in the atmosphere is essential for preventing the Earth from becoming too hot or too cold?

Detailed Solution for Test: Composition & Structure of Atmosphere - Question 3
The gas in the atmosphere essential for preventing the Earth from becoming too hot or too cold is Water vapor (Option D). Water vapor acts like a blanket, preserving the Earth's radiated heat and maintaining a suitable temperature range.
Test: Composition & Structure of Atmosphere - Question 4
In which layer of the atmosphere do all the weather and climate-related changes occur?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 4
All weather and climate-related changes occur in the Troposphere (Option A). This is the layer closest to the Earth's surface and is where temperature decreases with altitude. It contains dust particles and water vapor, making it the most active layer for weather phenomena.
Test: Composition & Structure of Atmosphere - Question 5
What is the uppermost layer of the Earth's atmosphere that gradually merges with outer space?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 5
The uppermost layer of the Earth's atmosphere that gradually merges with outer space is the Exosphere (Option D).
Test: Composition & Structure of Atmosphere - Question 6
Which term refers to the temperature at which air becomes saturated with moisture and condensation begins?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 6
The temperature at which air becomes saturated with moisture and condensation begins is known as the Dew point (Option A).
Test: Composition & Structure of Atmosphere - Question 7
What is the term for the process by which water is transformed from a liquid to a gaseous state due to heat?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 7
The process by which water is transformed from a liquid to a gaseous state due to heat is called Evaporation (Option C).
Test: Composition & Structure of Atmosphere - Question 8
Which atmospheric layer contains electrically charged particles known as ions and reflects radio waves back to Earth?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 8
The atmospheric layer that contains electrically charged particles known as ions and reflects radio waves back to Earth is the Ionosphere (Option C).
Test: Composition & Structure of Atmosphere - Question 9
Which gas is found in the atmosphere between 10 and 50 km above the Earth's surface and absorbs ultraviolet rays from the sun?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 9
The gas found in the atmosphere between 10 and 50 km above the Earth's surface that absorbs ultraviolet rays from the sun is Ozone (Option D).
Test: Composition & Structure of Atmosphere - Question 10
What is the term for the weight of water vapor per unit volume of air?
Detailed Solution for Test: Composition & Structure of Atmosphere - Question 10
The term for the weight of water vapor per unit volume of air is Absolute humidity (Option B).
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