Question

Which of the following method is to be applied to separate oxygen rich components and nitrogen rich components?

• A. Crystallization
• B. Evaporation
• C. Magnetic separation
• D. Distillation

Answer 1

Answer:

D. Distillation

• Distillation (Fractional Distillation): Atmospheric air is a homogeneous mixture of gases like nitrogen, oxygen, and argon.

• To separate oxygen-rich and nitrogen-rich components, the air is first liquefied under high pressure and low temperature.

• The liquid air is then slowly warmed up in a fractional distillation column, allowing the components to separate based on their different boiling points.

• Crystallisation is used to separate solid crystals from a solution.

• Evaporation is used to separate a dissolved solid from a liquid solvent.

• Magnetic separation is used to separate magnetic materials from non-magnetic ones.