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Matter in Our Surroundings — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
MCQ
Dry ice is:
  • A
    Solid CO2.
  • B
    Water in solid state.
  • C
    Non-volatile solid.
  • D
    Liquid carbon dioxide.
✓

Answer

  1. Solid CO2.

​​​​​​​Explanation:

Solid CO2 is called as dry ice.

Dry ice is solid carbon dioxide. It is primarily used to cool food products at lower temperature than what water ice can provide. It is called dry ice because it sublimes and doesn't leave any residue i.e. changes from solid to gaseous state without turning to liquid.

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