Why is solid Carbon Dioxide known as Dry Ice?

Answer:- Dry Ice is mostly termed Solid Carbon Dioxide or solid CO₂. This is called solid carbon dioxide because it doesn’t melt when it is heated and it is often used as a substitute for refrigerators. Dry Ice is often called solid carbon dioxide because solid carbon dioxide never transforms from solid to liquid when it is being heated, it changes itself directly into gas. Dry Ice is usually made by shrinking and cooling the gaseous Carbon Dioxide to produce liquid Carbon Dioxide under high pressure. Solid Carbon Dioxide has a low temperature of -78°C for which it is also used as a substitute for refrigerators in freezing food products or medical products. 

• Dry ice is usually manufactured by cooling and compressing the gas form of carbon dioxide under high pressure to produce Liquid Carbon Dioxide
•  Then the liquid is allowed to expand under reduced pressure so that it can form into carbon dioxide snow and these snows can take the shapes of cubes and pellets with the help of a hydraulic press
• Especially for Industrial cleaning, dry ice pellets are used. Dry Ice is considered one of the biggest substitutes for refrigerators because its temperature is low as -78°C which helps in freezing food products or medical products like insulins, or ice creams