Chemically, dry ice is (a) solid SO₂ (b) solid NO₂ (c) solid CO₂ (d) solid H₂
The correct answer is (c) solid CO₂. Dry ice is the solid form of carbon dioxide (CO₂). It sublimates directly into gas at room temperature without passing through the liquid phase, making it useful for cooling and creating fog effects.
Class 9th Science NCERT MCQ Questions
NCERT Books MCQ Questions Session 2024-2025.
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(c) Solid CO2 is called dry ice because it does not wet on evaporation and directly changes into vapours.
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