CBSE Class 12 Surface Chemistry Multiple Choice Questions with Answers. MCQ Questions Class 12 Surface Chemistry with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Surface Chemistry MCQs with Answers to know their preparation level.
Students who are searching for NCERT MCQ Questions for Class 12 Surface Chemistry with Answers are compiled here to get good practice on all fundamentals. Know your preparation level on MCQ Questions for Class 12 Surface Chemistry with Answers. You can also verify your answers from our provided MCQ Class 12 Surface Chemistry with Answers. So, ace up your preparation with MCQ of Class 12 Chemistry Examinations.
MCQ Questions Class 12 Surface Chemistry with Answers - Set - 5
Question 1:
Adsorption is a surface phenomenon because
(a) adsorbent has large surface area
(b) chemical compounds formed are not on the surface of adsorbent
(c) only the surfaces of the adsorbent have unutilised valencies
(d) None of the above
Correct Answer – (C)
Question 2 :
The Langmuir adsorption isotherm is deduced using which of the following assumptions?
(a) The adsorption takes place in multilayer
(b) The adsorbed molecules interact with each other
(c) The adsorption sites are equivalent in their ability to absorb the particles
(d) The heat of adsorption varies with coverage
Correct Answer – (C)
Question 3 :
Given below, catalyst and corresponding process/ reaction are matched. The mismatch is
(a) [RhCl(PPh3)2] : Hydrogenation
(b) TiCl4 + Al(C2H5)3 : Polymerisation
(c) V2O5 : Haber : Bosch process
(d) Nickel : Hydrogenation
Correct Answer – (C)
Question 4 :
Amount of gas adsorbed per gram of adsorbent increases with pressure, but after certain limit is reached, adsorption becomes constant. It is due to
(a) multilayers are formed
(b) desorption takes place
(c) temperature is increased
(d) absorption also starts
Correct Answer – (A)
Question 5 :
The volume of the gases H2, CH4, CO2 and NH3 adsorbed by one of activated charcoal at 298 K are in order
(a) H2 > CO2 > CH4 > NH3
(b) H2 > CH4 > CO2 > NH3
(c) NH3 > CO2 > CH4 > H2
(d) NH3 > CH4 > CO2 > H2
Correct Answer – (C)
MCQ Questions Class 12 Surface Chemistry with Answers
Question 6:
In the Freundlich adsorption equation x/m = kp1/n , the value of n is
(a) always greater than one
(b) always smaller than one
(c) always equal to one
(d) greater than one at low temperature and smaller than one at high temperature
Correct Answer – (A)
Question 7:
The decomposition of H2O2 may be checked by adding small quantity of phosphoric acid. This is an example of
(a) neutralisation
(b) negative catalysis
(c) positive catalysis
(d) catalytic poisoning
Correct Answer – (B)
Question 8:
For a linear plot of log(x /m ) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct? (k and n are constants)
(a) 1/n appears as the intercept
(b) Only 1/n appears as the slope
(c) log (1/n) appears as the intercept
(d) Both k and 1/n appear in the slope term
Correct Answer – (B)
Question 9:
Which one of the following reactions is an example of auto-catalysis?
(a) 2AsH3(s) → 2As(s) + 3H2(g)
(b) N2(g) + 3H2(g) →Fe(g) 2NH3(g)
(c) 2SO2(g) + O2(g) →No(g) 2SO3(g)
(d) C12H22O11(/) + H2O(/) →H+(/) C6H12O6 (/) + C6H12O6(/)
Correct Answer – (A)
Question 10:
Which of the following statements is incorrect regarding physisorption?
(a) It occurs because of van der Waals’ forces
(b) More easily liquefiable gases are adsorbed readily
(c) Under high pressure, it results into multimolecular layer on adsorbent surface
(d) Enthalpy of adsorption (ΔHadsorption) is slow and positive
Correct Answer – (D)
- NCERT Solutions Class 11 Chemistry Chapter 1 : Some Basic Concepts of Chemistry
- NCERT Solutions Class 11 Chemistry Chapter 2 : Structure Of The Atom
- NCERT Solutions Class 11 Chemistry Chapter 3 : Classification of Elements and Periodicity in Properties
- NCERT Solutions Class 11 Chemistry Chapter 4 : Chemical Bonding and Molecular Structure
- NCERT Solutions Class 11 Chemistry Chapter 5 : States of Matter
- NCERT Solutions Class 11 Chemistry Chapter 6 : Thermodynamics
- NCERT Solutions Class 11 Chemistry Chapter 7 : Equilibrium
- NCERT Solutions Class 11 Chemistry Chapter 8 : Redox Reactions
- NCERT Solutions Class 11 Chemistry Chapter 9 : Hydrogen
- NCERT Solutions Class 11 Chemistry Chapter 10 : The s-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 11 : The p-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 12 : Organic Chemistry: Some Basic Principles and Techniques
- NCERT Solutions Class 11 Chemistry Chapter 13 : Hydrocarbons
- NCERT Solutions Class 11 Chemistry Chapter 14 : Environmental Chemistry
