Artificial way of causing rainfall to reduce air pollution makes use of

Question

Artificial way of causing rainfall to reduce air pollution makes use of

1. A. silver iodide and potassium iodide (Correct answer)
2. B. silver nitrate and potassium iodide
3. C. silver iodide and potassium nitrate
4. D. silver nitrate and potassium chloride

Correct Answer

Option A — silver iodide and potassium iodide

Detailed Solution & Explanation

The correct answer is silver iodide and potassium iodide.

Key Points

• Cloud seeding for artificial rainfall (and to reduce air pollution by washing it out) uses silver iodide (AgI) as the primary nucleating agent because its crystal structure closely resembles ice and provides effective ice nucleation.
• Potassium iodide can also be used.
• The combination of silver iodide and potassium iodide is used in cloud seeding operations.