Gases used in Cloud Seeding - Science & Technology

Q.  Which of the following gases are used in Cloud Seeding?

1. Phosphorus triiodide
2. Potassium iodide
3. Solid carbon dioxide
4. Sodium iodide
5. Silver iodide

- Published on 12 Aug 15

a. 1,2,3,5
b. 2,3,4,5
c. 3 and 5
d. 2,3,5

ANSWER: 2,3,5
 
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. This can produce ice crystals at higher temperatures than silver iodide.

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