With reference to the layers of the atmosphere, consider the following statements: 1. The Mesosphere lies immediately above the Thermosphere. 2. Meteorites burn up in the Mesosphere on entering from space. 3. The Mesosphere extends up to a height of 80 km. Which of the statements given above is/are correct?

Correct Option The correct option is (c). Explanation The Earth's atmosphere is divided into five concentric layers based on temperature variations: Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere. The Mesosphere is the third layer from the Earth's surface. Statement-wise Analysis - Statement 1 is Incorrect. The Mesosphere lies immediately above the Stratosphere and below the Thermosphere. The correct vertical sequence from the surface upwards is Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere. - Statement 2 is Correct. Meteorites entering the atmosphere from space burn up in the Mesosphere. This occurs due to the intense friction generated between the high-speed meteorites and the air molecules present in this layer. - Statement 3 is Correct. The Mesosphere extends from the Stratopause (approximately 50 km altitude) up to a height of 80 km. The upper limit of this layer is known as the Mesopause, which is the coldest point in the atmosphere. Key Takeaway The Mesosphere is the third atmospheric layer, extending from 50 km to 80 km, characterized by decreasing temperatures with altitude and the burning up of meteorites.

NCERT Class 7 Geography — Chapter 1: Air

mcqmedium

With reference to the layers of the atmosphere, consider the following statements:

The Mesosphere lies immediately above the Thermosphere.
Meteorites burn up in the Mesosphere on entering from space.
The Mesosphere extends up to a height of 80 km.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c).

Explanation

The Earth's atmosphere is divided into five concentric layers based on temperature variations: Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere. The Mesosphere is the third layer from the Earth's surface.

Statement-wise Analysis

Statement 1 is Incorrect. The Mesosphere lies immediately above the Stratosphere and below the Thermosphere. The correct vertical sequence from the surface upwards is Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
Statement 2 is Correct. Meteorites entering the atmosphere from space burn up in the Mesosphere. This occurs due to the intense friction generated between the high-speed meteorites and the air molecules present in this layer.
Statement 3 is Correct. The Mesosphere extends from the Stratopause (approximately 50 km altitude) up to a height of 80 km. The upper limit of this layer is known as the Mesopause, which is the coldest point in the atmosphere.

Key Takeaway

The Mesosphere is the third atmospheric layer, extending from 50 km to 80 km, characterized by decreasing temperatures with altitude and the burning up of meteorites.

Your note

More from Chapter 1: Air

With reference to the composition of the atmosphere, consider the following statements: 1. Nitrogen is the most plentiful gas in the air. 2. Carbon dioxide and argon together make up the bulk of the atmosphere. 3. Helium and hydrogen are present in the atmosphere in lesser quantities than nitrogen. Which of the statements given above is/are correct?

easy

Which of the following gases is primarily responsible for the "greenhouse effect" by trapping the heat radiated from the earth?

easy

Consider the following statements regarding the circulation of air: 1. When air is heated, it contracts and becomes heavier. 2. Cold air is denser and tends to sink down. 3. Air circulation occurs when cold air from surrounding areas rushes to fill the gap left by rising hot air. Which of the statements given above is/are correct?

medium

With reference to the nitrogen cycle in the atmosphere, consider the following statements: 1. Plants absorb nitrogen directly from the air through their leaves. 2. Bacteria living in the soil and roots of some plants change the form of nitrogen for plant use. 3. Humans absorb all the nitrogen they inhale during breathing. Which of the statements given above is/are correct?

medium

Which one of the following best explains why the balance of carbon dioxide in the atmosphere is getting disturbed?

easy

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Correct Option

The correct option is (c).

Explanation

Statement-wise Analysis

Statement 1 is Incorrect. The Mesosphere lies immediately above the Stratosphere and below the Thermosphere. The correct vertical sequence from the surface upwards is Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
Statement 2 is Correct. Meteorites entering the atmosphere from space burn up in the Mesosphere. This occurs due to the intense friction generated between the high-speed meteorites and the air molecules present in this layer.
Statement 3 is Correct. The Mesosphere extends from the Stratopause (approximately 50 km altitude) up to a height of 80 km. The upper limit of this layer is known as the Mesopause, which is the coldest point in the atmosphere.

Key Takeaway

The Mesosphere is the third atmospheric layer, extending from 50 km to 80 km, characterized by decreasing temperatures with altitude and the burning up of meteorites.