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Q.

Which of the following is not correct.

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a

Milk is an example of emulsion

b

Physical adsorption increases with increase in temparature

c

Smoke is an aerosol

d

Enthalpy of physical adsorption is less when compared to enthalpy of chemical adsorption

answer is C.

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Detailed Solution

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Physical adsorption involves weak van Der waal forces of attraction between adsorbent and adsorbate molecules. It decreases with increase in temperature whereas chemisorption first increases and then decreases with increase in temperature.

Hence the correct answer is (C).

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