MCQ
Deep sea divers used to respirate is a mixture of
- AOxygen and argon
- ✓Oxygen and helium
- COxygen and nitrogen
- DOxygen and hydrogen
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$(K_f$ for water $= 1.86\, K \,kg\, mol^{-1},$ and molar mass of ethylene glycol $= 62\, g\, mol^{-1})$