Why do dust particles help cloud droplets form?
Answer and explanation
Correct answer: They provide a surface for water vapour to condense on
Dust, smoke, sea salt, and similar tiny particles act as condensation nuclei. Water vapour begins to condense on these surfaces when air cools to a suitable condition, producing tiny droplets that can join to form clouds. Therefore, option A is correct. Dust does not increase oxygen, keep vapour gaseous, or directly raise air pressure to cause rainfall; those statements confuse cloud formation with unrelated processes.
Frequently asked questions
What is the correct answer to this question?
They provide a surface for water vapour to condense on
Why is this the correct answer?
Dust, smoke, sea salt, and similar tiny particles act as condensation nuclei. Water vapour begins to condense on these surfaces when air cools to a suitable condition, producing tiny droplets that can join to form clouds. Therefore, option A is correct. Dust does not increase oxygen, keep vapour gaseous, or directly raise air pressure to cause rainfall; those statements confuse cloud formation with unrelated processes.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bills of Exchange. Topic: Dishonour of a Bill and Subsequent Actions.
