39th B.P.S.C. (Pre) 1994
Air is a-
acompound
belement
cmixture✓ Correct
delectrolyte
Explanation
Join logo (381) ## Page 30 Air is a mixture of many gases. It contains: Nitrogen (N₂) - 78.084% Oxygen (O₂) - 20.946% Argon (Ar) - 0.9340% Carbon dioxide (CO₂) - 0.0407% Neon (Ne) - 0.001818% Helium (He) - 0.000524% Hydrogen (H₂) - 0.000055% Krypton (Kr) - 0.000114% Methane (CH₄) - 0.00018%
general-science