Which atmospheric element provides a physical basis for precipitation but is not itself a gas?
Answer and explanation
Correct answer: Dust particles
The governing concept is condensation nucleation. Water vapour can condense more readily on tiny solid or liquid particles; dust, sea-salt, and other aerosols provide surfaces on which droplets begin to form. Hence, option A is correct. Nitrogen, oxygen, and helium are gases and are not themselves the solid condensation nuclei described here. Dust alone does not guarantee rain, but it supports the first stage of cloud-droplet formation.
Frequently asked questions
What is the correct answer to this question?
Dust particles
Why is this the correct answer?
The governing concept is condensation nucleation. Water vapour can condense more readily on tiny solid or liquid particles; dust, sea-salt, and other aerosols provide surfaces on which droplets begin to form. Hence, option A is correct. Nitrogen, oxygen, and helium are gases and are not themselves the solid condensation nuclei described here. Dust alone does not guarantee rain, but it supports the first stage of cloud-droplet formation.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting. Topic: accounting principles.
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