Class 12 Chemistry Chapter 4 Chemical Kinetics MCQ In English

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Class 12 Chemistry Chapter 4 Chemical Kinetics MCQ In English

Q1. Factor affecting the rate of reaction

(A) Temperature
(B) Pressure
(C) concentration
(D) All of these

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(D) All of these

Q2. when catalyst is used in an equilibrium process activation energy

(A) increases
(B) decreases
(C) increases or decreases
(D) none

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(B) decreases

Q3. quantity of catalyst after reaction

(A) does not change
(B) change
(C) increases
(D) decreases

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(A) does not change

Q4. the rate constant of a first order reaction does not depend on

(A) Temperature
(B) pressure
(C) concentration of reactants
(D) activation energy

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(C) concentration of reactants

Q5. the reaction in which two reactants form a product is called

(A) unimolecular
(B) bimolecular
(C) zero molecular
(D) trimolecular

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(B) bimolecular

Q6. For a second-order reaction, what is the unit of the rate of the reaction?

(A) s^-1
(B) mol L^-1s^-1
(C) mol^-1 L s^-1
(D) mol^-2 L² s^-1

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(C) mol^-1 L s^-1

Q7. Rate of reaction

(A) decreases with time
(B) increases with time
(C) does not depend on temp.
(D) does not depend on concentration

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(B) increases with time

Q8. The number of molecules, atoms or molecules participating in a reaction is called

(A) molecularity
(B) order
(C) rate of reaction
(D) equilibrium constant

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(A) molecularity

Q9. The half life of the first order reaction does not depend

(A) initial concentration of reactants
(B) on Temperature
(C) on pressure
(D) none

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(A) initial concentration of reactants

Q10. the rate of reaction of substance depends on

(A) atomic weight
(B) equivalent weight
(C) molecular mass
(D) active mass

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(D) active mass

Chemical kinetics mcqs with answers pdf download

Q11. The rate determine term in a chemical reaction is

(A) slow step
(B) middle step
(C) initial step
(D) final step

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(A) slow step

Q12. The rate determine at any moment in a chemical reaction is called

(A) initial rate
(B) final rate
(C) instantaneous rate
(D) average rate

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(C) instantaneous rate

Q13. The rate constant of a reaction depends upon

(A) temperature of the reaction
(B) extent of the reaction
(C) initial concentration of the reaction
(D) the time of completion of reaction

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(A) temperature of the reaction

Q14. The order of reaction is decided by……

(A) temperature
(B) mechanism of reaction as well as relative concentration of reactants
(C) molecularity
(D) pressure

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(B) mechanism of reaction as well as relative concentration of reactants

Q15. The number of molecules of the reactants taking part in a single step of the reaction is indicative of

(A) order of a reaction
(B) molecularity of a reaction
(C) fast step of the mechanism of a reaction
(D) half-life of the reaction

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(B) molecularity of a reaction

Chemical kinetics mcqs with answers pdf class 12 Chemistry

Q16. Threshould energy is equal to

(A) activation energy
(B) activation energy-energy of molecules
(C) activation energy + energy of molecules
(D) None

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(C) activation energy + energy of molecules

Q17. Radioactive disintegration is an example of

(A) Zero order reaction
(B) first order reaction
(C) second order reaction
(D) Third order reaction

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(B) first order reaction

Q18. When a chemical reaction takes place during the course of the reaction the rate of reaction

(A) keeps on increasing with time
(B) remains constant with time
(C) keeps on decreasing with time
(D) shows irregular trend with time

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(A) keeps on increasing with time

Q19. The value of rate of a pseudo first order reaction depends upon

(A) the concentration of both the reactants present in the reaction
(B) the concentration of the reactant present in small amount
(C) the concentration of the reactant present in excess
(D) the value of ΔH of the reaction

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(B) the concentration of the reactant present in small amount

Q20. H₂(g) + Cl₂(g) → 2 HCI (g) The order of this reaction is

(A) Zero order
(B) First order
(C) Second order
(D) None of these

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(A) Zero order

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Class 12 Chemistry Objective Question In English

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Class 12 chemistry chapter 4 chemical kinetics mcqs Quiz

Pattern Based	Bihar Board, Patna
Class	12^thor Inter
Article Name	Class 12 Chemistry Chapter 4 Chemical Kinetics MCQ In English
Category	Class 12 Chemistry Chapter Wise Objective Question
Subject	Class 12 Chemistry
Class 12^th English Summary	BSEB Class 12th English Summary
Type Of Question	Objective Question \|\| 01 Marks
Script	Hindi And English Medium
Published On	Bihari Academy