Question

Solid carbon dioxide is used for the refrigeration of food. Justify the statement.

Answer 1

• When carbon dioxide (CO₂) is cooled then it directly transforms into solid.
• Solid carbon dioxide is known as dry ice.
• It is used for the refrigeration of food due to the property that it melts slowly and it directly changes from solid to a gaseous state which prevents liquid formation in the surrounding.

Sublimation- The form of state changes when any matter directly changes into solid to gaseous form without changing into the liquid state.