CBSE Class 12 Chemistry Daily Practice Questions 11 October 2023

CBSE Class 12 Chemistry Daily Practice Questions for 11 October 2023: Consistent practicing of CBSE Class 12th Chemistry practice questions builds the confidence of candidates appearing for the upcoming board examination. Practicing a variety of questions will help you gain a sense of accomplishment which can greatly boost your self-confidence and reduce test anxiety. Those appearing for the CBSE Class 12 chemistry exam must have a better understanding of the test pattern for which they must go through CBSE Class 12 Chemistry Topic-Wise Weightage 2024 for clarity on topics. 

Also Check | CBSE Class 12 Chemistry Daily Practice Questions 10 October 2023

CBSE Class 12 Chemistry Daily Practice Questions for 11 October 2023

Students can analyse their CBSE Class 12 Chemistry exam performance by solving daily practice questions shared below.

Question 1: The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows

(a) no deviation from Raoult’s Law.

(b) positive deviation from Raoult’s Law.

(c) negative deviation from Raoult’s Law.

(d) that the solution is unsaturated.

Question 2: The Van’t Hoff factor (i) accounts for

(a) degree of solubilisation of solute.

(b) the extent of dissolution of solute. 

(c) the extent of dissociation of solute.

(d) the degree of decomposition of solution.

Question 3: The molal elevation constant depends upon

(a) nature of the solvent.

(b) vapour pressure of the solution.

(c) enthalpy change.

(d) nature of solute.

Question 4: Which of the following statements about the catalyst is true?

(a) A catalyst accelerates the rate of reaction by bringing down the activation energy.

(b) A catalyst does not participate in reaction mechanism.

(c) A catalyst makes the reaction feasible by making delta G more negative.

(d) A catalyst makes equilibrium constant more favourable for forward reaction.

Question 5: For a chemical reaction A to B, it is found that the rate of reaction doubles when the concentration of A is increased four times. The order of a reaction is

(a) Two

(b) One

(c) Half

(d) Zero

Question 6: According to the adsorption theory of catalysis, the speed of the reaction increases because

(a) the concentration of the reactant molecules at the active centres of the catalyst becomes high due to adsorption.

(b) in the process of adsorption, the activation energy of the molecules becomes large.

(c) adsorption produces heat which increases the speed of the reaction.

(d) adsorption lowers the activation energy of the reaction.

Question 7: Which shape selective catalyst is used to convert alcohol to gasoline?

(a) Trpsin

(b) Calgon

(c) ZSM-5

(d) Zeigler-Natta catalyst

Question 8: Lyophillic colloids are stable due to

(a) charge on the particles.

(b) large size of the particles.

(c) small size of the particles.

(d) layer of dispersion of medium on the particles.

Question 9: The potential difference between the fixed charged layer and the diffused layer having opposite charge is called

(a) Zeta potential

(b) Electrokinetic potential

(c) Both (a) and (b)

(d) Streaming potential

Question 10: People add sodium chloride to water while boiling eggs. This is to

(a) decrease the boiling point.

(b) increase the boiling point.

(c) prevent the breaking of eggs.

(d) make eggs tasty

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