JAMB Chemistry 2020 Objective — Question 7
Question 7 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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7. Sodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The further separation stages are
- A. A. filtration followed by decantation
- B. B. evaporation followed by filtration
- C. C. distillation followed by decantation
- D. D. filtration followed by evaporationCorrect
Explanation
After adding water to dissolve the NaCl, the insoluble residue is removed by filtration, and the NaCl is then recovered from the filtrate by evaporation.
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