How can polar stratospheric clouds help in ozone depletion?
Answer and explanation
Correct answer: They provide surfaces that activate chlorine compounds
The governing concept is heterogeneous stratospheric chemistry in extremely cold polar conditions. Polar stratospheric clouds provide particle surfaces on which relatively inactive chlorine reservoir compounds can be converted into photochemically active forms. When sunlight returns, these forms participate in catalytic reactions that destroy ozone molecules, allowing one chlorine atom to affect many ozone molecules. Option C is correct; the other options incorrectly describe rainfall, exospheric density or removal of the troposphere.
Frequently asked questions
What is the correct answer to this question?
They provide surfaces that activate chlorine compounds
Why is this the correct answer?
The governing concept is heterogeneous stratospheric chemistry in extremely cold polar conditions. Polar stratospheric clouds provide particle surfaces on which relatively inactive chlorine reservoir compounds can be converted into photochemically active forms. When sunlight returns, these forms participate in catalytic reactions that destroy ozone molecules, allowing one chlorine atom to affect many ozone molecules. Option C is correct; the other options incorrectly describe rainfall, exospheric density or removal of the troposphere.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
