BCECE SERIES
Chemistry

Surface Chemistry

2 previous year questions.

Volume: 2 Ques
Yield: Medium

High-Yield Trend

2
2017

Chapter Questions
2 MCQs

01
PYQ 2017
medium
chemistry ID: bcece-20
Which of the following statements is incorrect regarding physiosorption ?
1
Under high pressure it results into multimolecular layer on adsorbent surface
2
More easily liquefiable gases are adsorbed readily
3
Enthalpy of adsorption (AH adsorption) is low and positive
4
It occurs because of van der Walls forces
02
PYQ 2017
medium
chemistry ID: bcece-20
Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10 and 0.005 respectively. The correct order of their protective powers is