Which gas is small in amount but has a major role in controlling ultraviolet radiation?
Answer and explanation
Correct answer: Ozone
The governing concept is selective absorption of solar radiation. Ozone is present in a small concentration, especially in the stratosphere, but its molecules strongly absorb much of the Sun’s harmful ultraviolet radiation before it reaches Earth’s surface. Hence option A is correct and this protective role is not shared in the same way by nitrogen, argon or helium, which do not form the protective ozone layer.
Frequently asked questions
What is the correct answer to this question?
Ozone
Why is this the correct answer?
The governing concept is selective absorption of solar radiation. Ozone is present in a small concentration, especially in the stratosphere, but its molecules strongly absorb much of the Sun’s harmful ultraviolet radiation before it reaches Earth’s surface. Hence option A is correct and this protective role is not shared in the same way by nitrogen, argon or helium, which do not form the protective ozone layer.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Basic Accounting Terms.
