Question on: JAMB Chemistry - 2020
Which of the following can be obtained by fractional distillation?
A
Nitrogen from liquid air
B
Sodium Chloride from sea water
C
Iodine from solution of Iodine in carbon tetrachloride
D
Sulphur from the solution of sulphur in carbon disulphide
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Correct Option: A
Fractional distillation is a separation technique used to separate miscible liquids with different boiling points.
- A. Nitrogen from liquid air: Liquid air is a mixture of gases (primarily nitrogen and oxygen) with different boiling points. Fractional distillation can separate these components.
- B. Sodium Chloride from sea water: Sodium chloride is a solid and can be separated from water by evaporation, not fractional distillation.
- C. Iodine from a solution of Iodine in carbon tetrachloride: Both iodine and carbon tetrachloride are solids or miscible liquids, but in a liquid solution, they can be separated using fractional distillation.
- D. Sulphur from the solution of sulphur in carbon disulphide: Both sulphur and carbon disulphide are solids or miscible liquids, but in a liquid solution, they can be separated using fractional distillation.
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