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Which of the following is not an example of freezing point depression?

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in Food Processing Unit Operations by (110k points)
Which of the following is not an example of freezing point depression?

(a) Salt in water

(b) Cooling the hot water

(c) Alcohol in water

(d) Mixing of impurities into a fine powder

The question was asked in exam.

My question is based upon Solid Liquid Equilibrium topic in division Contact Equilibrium Separation Process of Food Processing Unit Operations

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Correct option is (c) Alcohol in water

The explanation is: The freezing point depression is the decrease of the freezing point of a solvent on the addition of a non-volatile solute. Examples like alcohol in water, salt in water and the mixing of two solids such as impurities into a finely powdered drug.

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