Question

Dry ice is:

• A. solid $C{O}_2$
• B. solid $S{O}_2$
• C. solid $N{O}_2$
• D. solid $H_{2}O$

Answer 1

Answer: (A)

solid $C{O}_2$

Dry Ice is the common name for solid carbon dioxide $\left(C{O}_2\right)$. 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.
Hence option $A$ is correct.