Question
Which one of the following is also known as Dry ice in its solid form?
NDA
General Ability
General Science
2025
NDA 2025 (Phase 1)
NDA General Ability Question (2025) — Solution
Options
- A. SiO_2
- B. CO_2
- C. CaO
- D. MgO
Answer
B. CO_2
Step-by-step solution
Solid carbon dioxide (CO_2) is commonly known as dry ice. It is called dry ice because it sublimes directly from a solid state to a gaseous state without passing through a liquid phase under normal atmospheric pressure. Answer: CO_2
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