Why is the exosphere called a very rarefied layer?
Answer and explanation
Correct answer: Because gas particles are very far apart there
The exosphere is the outermost atmospheric region, where gravity holds only a very small number of gas particles. Consequently, the particles are extremely far apart and collisions are rare, so the air has exceptionally low density; this is what “rarefied” means. Hence option A is correct. Heavy rain, dense clouds, and seawater are surface or lower-atmosphere features, not characteristics of the exosphere.
Frequently asked questions
What is the correct answer to this question?
Because gas particles are very far apart there
Why is this the correct answer?
The exosphere is the outermost atmospheric region, where gravity holds only a very small number of gas particles. Consequently, the particles are extremely far apart and collisions are rare, so the air has exceptionally low density; this is what “rarefied” means. Hence option A is correct. Heavy rain, dense clouds, and seawater are surface or lower-atmosphere features, not characteristics of the exosphere.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
