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Air and Atmosphere — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAir and Atmosphere2 Marks
Question
“Air is a mixture”. Support this statement citing at least three evidences.
✓

Answer

“Air is a mixture” The following are in evidences which prove that air is a mixture.
  1. The composition of air varies from place to place and from time to time.
  2. The components of air retain their individual properties.
  3. Liquid air has no definite boiling point.
  4. No energy exchange occurs when the components of air are mixed with each other.

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