Supercooled raindrops develop as microscopic cloud droplets collect one another as they fall. Ice processes are not involved in the formation of these raindrops. The precipitation falls to the surface as supercooled rain or drizzle and freezes instantly on contact.

What is the name for the precipitation that consists of supercooled raindrops that are produced by contact with solid objects?

Sleet can make travel hazardous. Produced when supercooled raindrops freeze on contact with solid objects. It can form a thick coat of ice having sufficient weight to seriously damage trees and power lines.

When rain comes in contact with ground at around zero degree temperature is called?

When these supercooled drops make contact with the ground, power lines, tree branches, aircraft, or anything else below 0 °C (32 °F), a portion of the drops instantly freezes, forming a thin film of ice, hence freezing rain.