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
Correct Answer: Silver Iodide
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.