Which is the most common chemical used in cloud seeding?
The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Cloud seeding process involved a furnace in which coal is burnt at 1,350 degrees Celsius in which powdered Silver Iodide is sprinkled. These particles rise in the air to cloud level in 10-12 minutes. After these particles travel upwards, they crystallize at minus-five degrees and since clouds have both ice and water crystals, the particles attract the water, its weight increases and they fall down in the form of rain within a couple of hours.