Q46.Which one of the following is not a property of physical adsorption? (1) Higher the pressure, more the adsorption (2) Greater the surface area, more the adsorption (3) Lower the temperature, more the adsorption (4) Unilayer adsorption occurs
What This Question Tests
This question tests the fundamental properties distinguishing physical adsorption. Physical adsorption is known to be multilayered, not unilayered, making statement (4) incorrect.
Concepts Tested
📚 NCERT Sections This Tests
4.11 — Explain Giving Reasons:
Chemistry Class 11 · Chapter 4
4.11 Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.
14.2 — Which Of The Statements Given In Exercise 14.1 Is True For P-Type
Physics Class 12 · Chapter 14
14.2 Which of the statements given in Exercise 14.1 is true for p-type semiconductos.
4.12 — What Are Interstitial Compounds? Why Are Such Compounds Well Known For
Chemistry Class 11 · Chapter 4
4.12 What are interstitial compounds? Why are such compounds well known for transition metals?
📋 Question Details
- Chapter
- Surface Chemistry
- Topic
- Adsorption (Physisorption)
- Year
- 2018
- Shift
- 16 Apr Online
- Q Number
- Q46
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 5: Surface Chemistry
More from this Chapter
Q92.In Langmuir’s model of adsorption of a gas on a solid surface (1) the rate of dissociation of adsorbed molecules (2) the adsorption at a single site on the surface may from the surface does not depend on the surface involve multiple molecules at the same time covered (3) the mass of gas striking a given area of surface is (4) the mass of gas striking a given area of surface is proportional to the pressure of the gas independent of the pressure of the gas
Q60.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 (1) D < A < C < B (2) C < B < D < A (3) A < C < B < D (4) B < D < A < C
Q49.Which of the following statements is incorrect regarding physissorptions ? JEE Main 2009 JEE Main Previous Year Paper (1) It occurs because of vander Waal's forces. (2) More easily liquefiable gases are adsorbed readily. (3) Under high pressure it results into multi (4) Enthalpy of adsorption (ΔHadsorption ) is low and molecular layer on adsorbent surface. positive.
Q52.If x is the mass of the gas adsorbed on mass m of the adsorbent at pressure p, Freundlich adsorption isotherm gives a straight line on plotting (1) x/m vs p (2) x/m vs 1/p (3) log x/m vs log p (4) log x/m vs p