b
Chalk from a mixture of chalk and water
d. Kerosene oil from a mixture of kerosene oil and water
Pure water from impure water Simple distillation
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Answer: Chalk is insoluble in water and forms a heterogeneous mixture when mixed with water. As chalk is heavier, therefore it will settle at the bottom of the mixture when it is left undisturbed for sometime. Thus, water can be separated from chalk powder by sedimentation, decantation and filtration.
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