Find here the NCERT Book Multiple Choice Questions from Class 12 Chemistry book with Answers Pdf free download as per CBSE new exam pattern. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Class 12 Chemistry. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.
Q.1 Volume of one mole of any gas at NTP is
(a) 11.2 litre
(b) 22.4 litre
(c) 10.2 litre
(d) 22.8 litre
(b) 22.4 litre
Q.2 Tyndall effect confirms the
(a) gravity effect on the sol. particles
(b) light scattering by the sol. particles
(c) heterogeneous nature of sols.
(d) Brownian motion of the sol. particles
(c) heterogeneous nature of sols.
Q.3 Which one of the following is alyophilic colloid?
(a) Milk
(b) Gum
(c) Fog
(d) Blood
(b) Gum
Q.4 Which of the following is not correct for enzyme catalysis?
(a) The enzyme activity is maximum at optimum pH which is between 5-7
(b) Each enzyme is specific for a given reaction
(c) The favourable temperature range of enzyme activity is between 25-37°C
(d) The enzymatic activity is increased in presence of certain substances.called co-enzymes
(c) The favourable temperature range of enzyme activity is between 25-37°C
Q.5 Presence of traces of arsenious oxide (As2O3) in the reacting gases SO2 and O3 in presence of plantinised asbestos in contact process acts as
(a) catalytic promoter
(b) catalytic poison
(c) dehydrating agent
(d) drying agent
(b) catalytic poison
Q.6 Shape selective catalysis is a reaction catalysed by
(a) zeolite
(b) enzymes
(c) platinum
(d) Ziegler-Natta catalyst
(a) zeolite
Q.7 Which of the following types of metals make the most efficient catalyst?
(a) Alkali metals
(b) Transition metals
(c) Inner transition metals
(d) Alkaline earth metals
(b) Transition metals
Q.8 The oxide of nitrogen which acts as a catalyst in lead chamber process is
(a) NO
(b) NO2
(c) N2O4
(d) H2O5
(a) NO
Q.9 The activity of an enzyme becomes ineffective
(a) at low temperature
(b) at atmospheric pressure
(c) at high temperature
(d) in aqueous medium
(c) at high temperature
Q.10 Which of the following can adsorb larger volume of hydrogen gas?
(a) Finely divided platinum
(b) Colloidal solution of palladium
(c) Small pieces of palladium
(d) A single metal surface of platinum
(b) Colloidal solution of palladium
Q.11 Which of the following gases present in a polluted area will be adsorbed most easily on the charcoal gas mask?
(a) H2
(b) O3
(c) N2
(d) SO2
(d) SO2
Q.12 Which kind of catalysis can be explained on the basis of adsorption theory ?
(a) Homogeneous catalysis
(b) Heterogeneous catalysis
(c) Negative catalysis
(d) Auto catalysis
(b) Heterogeneous catalysis
Q.13 A colloidal system is which liquid is dispersed phase and solid is dispersion medium is classified as
(a) gel
(b) sol
(c) emulsion
(d) aerosol
(a) gel
Q.14 Which of the following will not form a colloidal system?
(a) Solid-gas
(b) Liquid-gas
(c) Gas-gas
(d) Gas-liquid
(c) Gas-gas
Q.15 Fog in an example of colloidal system of
(a) liquid in gas
(b) gas in liquid
(c) solid in gas
(d) gas in solid
(a) liquid in gas
Q.16 Movement of dispersion medium under the influence of electric field is known as
(a) electrodialysis
(b) electrophoresis
(c) electroosmosis
(d) cataphoresis
(c) electroosmosis
Q.17 At CMC (Critical Micellisation Cone.) the surface molecules
(a) associate
(b) dissociate
(c) decompose
(d) become completely soluble
(a) associate
Q.18 Milk is an example of
(a) emulsion
(b) suspension
(c) foam
(d) sol
(a) emulsion
Q.19 Tyndall effect is due to
(a) electric charge
(b) scattering of light
(c) absorption of light
(d) none of these
(b) scattering of light
Q.20 Fog is a colloidal system of
(a) liquid dispersed in a gas
(b) gas dispersed in a gas
(c) solid dispersed in gas
(d) solid dispersed in liquid
(a) liquid dispersed in a gas
Q.21 The cause of Brownian movement is
(a) heat change in liquid state
(b) attractive force between colloidal particles and dispersion medium
(c) bombardment of the colloidal particles by the molecules of the dispersion medium
(d) interaction of charged particles
(c) bombardment of the colloidal particles by the molecules of the dispersion medium
Chemistry MCQ Questions for Class 12 with Answers
- Chapter 1: The Solid State Class 12 MCQ Questions
- Chapter 2: Solutions Class 12 MCQ Questions
- Chapter 3: Electrochemistry Class 12 MCQ Questions
- Chapter 4: Chemical Kinetics Class 12 MCQ Questions
- Chapter 5: Surface Chemistry Class 12 MCQ Questions
- Chapter 6: General Principles and Processes of Isolation of Elements Class 12 MCQ Questions
- Chapter 7: The p-Block Elements Class 12 MCQ Questions
- Chapter 8: The d-and f-Block Elements Class 12 MCQ Questions
- Chapter 9: Coordination Compounds Class 12 MCQ Questions
- Chapter 10: Haloalkanes and Haloarenes Class 12 MCQ Questions
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