Dry ice is…..

Correct option is D

Ans.(d) CO₂ in the solid state

Explanation:
The correct answer is CO₂ in the solid state. Dry ice is the solid form of carbon dioxide (CO₂). It is widely used for cooling and refrigeration because it sublimates directly from solid to gas without turning into a liquid, preventing moisture-related damage.

Information Booster:
● Dry ice is used for preserving perishable items, shipping vaccines, and creating fog effects in theaters.
● It sublimates at −78.5°C, making it ideal for refrigeration.
● Dry ice is commonly used in the food industry, laboratories, and event production.
● It does not leave liquid residue, making it preferred for delicate items.
● CO₂ from dry ice is used in carbonated beverages and controlled atmospheres.
● Handling dry ice requires protective gloves due to its extreme cold.
● The sublimation of dry ice demonstrates the direct phase transition phenomenon.