12. A mixture of chalk powder and ammonium chloride can be separated by
12. A mixture of chalk powder and ammonium chloride can be separated by
The correct option is D sublimation
Explanation for correct option:
(D) The mixture of chalk powder and ammonium chloride can be separated by sublimation process.
Ammonium chloride sublimes from a mixture when heated. Chalk powder is left behind as residue in the china dish.
Explanation for incorrect option:
(A) Distillation process, the mixture of a non volatile solid and a liquid can be separated. Here the chalk powder and the ammonium chloride both are solid substances.
(B) In the evaporation process, an element or compound is converted from its liquid state to its gaseous state below the temperature at which it boils. Here the chalk powder and the ammonium chloride both are solid substances.
(C) In the filtration process, the separation of a mixture contains a solid and a liquid where solid does not dissolve. Here the chalk powder and ammonium chloride both are solid substances.
Hence, option (D) is the correct answer.
sublimation
Explanation for correct option:
(D) The mixture of chalk powder and ammonium chloride can be separated by sublimation process.
Ammonium chloride sublimes from a mixture when heated. Chalk powder is left behind as residue in the china dish.
Explanation for incorrect option:
(A) Distillation process, the mixture of a non volatile solid and a liquid can be separated. Here the chalk powder and the ammonium chloride both are solid substances.
(B) In the evaporation process, an element or compound is converted from its liquid state to its gaseous state below the temperature at which it boils. Here the chalk powder and the ammonium chloride both are solid substances.
(C) In the filtration process, the separation of a mixture contains a solid and a liquid where solid does not dissolve. Here the chalk powder and ammonium chloride both are solid substances.
Hence, option (D) is the correct answer.
