Question

Which of the following is/are uses of dry ice?

• A. Refrigeration and preservation of foodstuffs.
• B. Used as bait to trap insects, mosquitoes etc.
• C. Used in carbonated drinks
• D. Used in the manufacture of urea

Answer 1

Answer: (A), (B)

The correct options are
A

Refrigeration and preservation of foodstuffs.

B

Used as bait to trap insects, mosquitoes etc.

Dry ice (Solid Carbon Dioxide) is used for refrigeration and preservation of foodstuffs without the use of mechanical cooling. Moreover, dry ice can be used as bait to trap insects, mosquitoes etc. due to their attraction to carbon dioxide. It is not used in carbonated drinks instead it is used as a cooling agent for that. Gaseous carbon dioxide is dissolved at high pressures to make carbonated drinks. Moreover, in the manufacture of urea gaseous carbon dioxide is used.