Why are gases like hydrogen and helium prominent in the exosphere?
Answer and explanation
Correct answer: They are light gases found in upper parts
The governing concept is gravitational separation in the extremely thin upper atmosphere. Hydrogen and helium have very low molecular masses, so they can diffuse upward more readily than heavier gases and are relatively prominent in the exosphere. Thus option B is correct. They are not heavy gases, do not exist there merely to form rainfall, and are not the principal explanation for ozone formation.
Frequently asked questions
What is the correct answer to this question?
They are light gases found in upper parts
Why is this the correct answer?
The governing concept is gravitational separation in the extremely thin upper atmosphere. Hydrogen and helium have very low molecular masses, so they can diffuse upward more readily than heavier gases and are relatively prominent in the exosphere. Thus option B is correct. They are not heavy gases, do not exist there merely to form rainfall, and are not the principal explanation for ozone formation.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
