33. The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are A.Silver Iodide B.Sodium Chloride C.Dry ice or frozen carbon dioxide D.All the above
Answer: Option A Solution: The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Liquid propane, which expands into a gas, has also been used.
