Surface Chemistry & Solid State · JEE Main previous year questions

2018 2 questions

1. Q902018 · 16 Apr 2018 · Shift 1

   Which one of the following is not a property of physical adsorption?

   1. A.Higher the pressure, mre the adsorption
   2. B.Lower the temperature, more the adsorption
   3. C.Greater the surface area, more the adsorption
   4. D.Unilayer adsorption ocurs
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   Answer: D

2. Q862018 · 15 Apr 2018 · Shift 1

   Which of the following statements about colloids is False ?

   1. A.Freezing point of colloidal solution is lower than true solution at same concentration of a solute.
   2. B.Colloidal particles can pass through ordinary filter paper.
   3. C.When silver nitrate solution is added to potassium iodide solution, a negatively charged colloidal solution is formed.
   4. D.When excess of electolyte is added to colloidal solution, colloidal particle will be precipitated.
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   Answer: A