Which layer contains most of the mass of the atmosphere?
Answer and explanation
Correct answer: Troposphere
Option C is correct because gravity compresses atmospheric gases most strongly near Earth’s surface. The troposphere is the lowest layer, so it has the greatest density and contains roughly three-quarters of the atmosphere’s total mass. It also contains most water vapour and almost all ordinary weather. The exosphere and thermosphere are extremely thin, while the mesosphere lies higher and contains much less air. Thus the key idea is decreasing pressure and density with altitude, not simply the layer’s name or temperature.
Frequently asked questions
What is the correct answer to this question?
Troposphere
Why is this the correct answer?
Option C is correct because gravity compresses atmospheric gases most strongly near Earth’s surface. The troposphere is the lowest layer, so it has the greatest density and contains roughly three-quarters of the atmosphere’s total mass. It also contains most water vapour and almost all ordinary weather. The exosphere and thermosphere are extremely thin, while the mesosphere lies higher and contains much less air. Thus the key idea is decreasing pressure and density with altitude, not simply the layer’s name or temperature.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
