Question

Dry ice is

• A. $\text{solid}N{H}_3$
• B. $\text{solid}S{O}_2$
• C. $\text{solid}C{O}_2$
• D. $\text{solid}{N}_2$

Answer 1

The correct option is C $\text{solid}C{O}_2$

Dry Ice is the common name for solid carbon dioxide $C{O}_2$. It gets this name because it does not melt into a liquid when heated. Instead, it changes directly into a gas. This process is known as sublimation. Dry ice is used as a refrigerant for frozen foods.
Hence option (c) is correct.