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General Science • ChemistryEasy

What is the common name of solid carbon dioxide, which undergoes sublimation directly into gas at atmospheric pressure?

A. Quicklime
B. Dry ice✓ Correct Answer
C. Blue vitriol
D. Saltpeter

💡 Solution & Explanation

Dry ice is the widely used commercial and scientific term for solid carbon dioxide, which transforms directly from a solid phase into gaseous carbon dioxide through sublimation at standard atmospheric pressure without passing through an intermediate liquid state. Quicklime refers specifically to calcium oxide produced by heating limestone, whereas blue vitriol is the common hydrated form of copper sulfate. Questions concerning chemical substances, their common names, and phase transitions are standard components of general science testing.

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