Which of the following gas does not liquefy on separation of gases from air by fractional distillation?

Oxygen

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Carbon dioxide

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Nitrogen

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None of above

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Solution

The correct option is B Carbon dioxide
The gases in air can be separated using fractional distillation where the first step is liquefaction of gases. $O_{2}, N_{2}$ gets liquefied but $C O_{2}$ freezes at $- 79^{\circ} C$ and is removed. It does not undergo liquefaction.

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Which of the following gas does not liquefy on separation of gases from air by fractional distillation?

The correct option is B Carbon dioxideThe gases in air can be separated using fractional distillation where the first step is liquefaction of gases. O2,N2 gets liquefied but CO2 freezes at −79∘Cand is removed. It does not undergo liquefaction.

The correct option is B Carbon dioxide
The gases in air can be separated using fractional distillation where the first step is liquefaction of gases. $O_{2}, N_{2}$ gets liquefied but $C O_{2}$ freezes at $- 79^{\circ} C$ and is removed. It does not undergo liquefaction.