1. Tardigrade
  2. Question
  3. Chemistry
  4. The number of incorrect statement/s from the following is/are A. Water vapours are adsorbed by anhydrous calcium chloride. B. There is a decrease in surface energy during adsorption. C. As the adsorption proceeds, Δ H becomes more and more negative. D. Adsorption is accompanied by decrease in entropy of the system.

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Q. The number of incorrect statement/s from the following is/are ____
A. Water vapours are adsorbed by anhydrous calcium chloride.
B. There is a decrease in surface energy during adsorption.
C. As the adsorption proceeds, $\Delta H$ becomes more and more negative.
D. Adsorption is accompanied by decrease in entropy of the system.

JEE MainJEE Main 2023

Solution:

‘$A$’ water vapours are absorbed by calcium chloride.
C. As the adsorption proceeds, $\Delta H$ becomes less and less negative