Artificial way of causing rainfall to reduce air pollution makes use of
A
silver iodide and potassium iodide
Correct answer
B
silver nitrate and potassium iodide
C
silver iodide and potassium nitrate
D
silver nitrate and potassium chloride
Explanation
Option (A) is correct because silver iodide and potassium iodide possess crystalline structures nearly identical to natural ice, allowing them to act as efficient nuclei for moisture to condense and fall as rain. Option (B) is the most tempting distractor, but silver nitrate is incorrect because it is highly water-soluble and lacks the specific hexagonal lattice required to mimic ice crystals effectively. This question tests the core concept of **Cloud Seeding**, a weather modification technique used to induce precipitation and wash out atmospheric pollutants.
Cloud SeedingWeather ModificationArtificial rainfallCloud seedingAir pollutionSilver iodidePotassium iodide