Question

________ is used in seeding clouds.
i) potassium iodide ii) calcium carbonate
iii) sulphurdioxide iv) ammonium phosphate

Answer 1

Potassium Iodide is used in seeding clouds.

The cloud-seeding is a weather modification technique used to enhance rain or snow, a way of changing the amount or type of precipitation that falls from clouds, which is done by dispersing substances into the air that serve as cloud condensation or ice nuclei.

The common chemicals used for cloud seeding include silver iodide and dry ice. Liquid propane, that expands into a gas, is also used which can produce ice crystals at higher temperatures than silver iodide.