CBSE Class 12 Chemistry Chemical Kinetics MCQs Set B

CBSE Class 12 Chemistry Chemical Kinetics MCQs Set B with answers available in Pdf for free download. The MCQ Questions for Class 12 Chemistry with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 12 by CBSE, NCERT and KVS. Multiple Choice Questions are an important part of Term 1 and Term 2 exams for Grade 12 Chemistry and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for NCERT Class 12 Chemistry and also download more latest study material for all subjects

Chemical Kinetics Class 12 Chemistry MCQ

Class 12 Chemistry students should refer to the following multiple-choice questions with answers for Chemical Kinetics in standard 12. These MCQ questions with answers for Grade 12 Chemistry will come in exams and help you to score good marks

Chemical Kinetics MCQ Questions Class 12 Chemistry with Answers

I. MCQ - Choose Appropriate Alternative

1. The rate of chemical reaction __________ with increase in concentration of the reactants. (Increases, Decreases, Does not alter)

2. Ionic reactions of inorganic compounds are __________. (very slow, moderately slow, very fast)

3. The rate of __________ reactions can be determined. (Very Slow, Moderately Slow, Very fast)

4. The sum of exponents of the concentrations of reactants is called __________. (Order of reaction, Molecularity, Equilibrium Constant)

5. The rate of reaction generally __________ in the presence of a suitable catalyst.  (Increases, Decreases, remains constant)

6. The rate of a reaction __________ upon the temperature. (depends, slightly depends, does not depends)

7. The minimum energy required to bring about a chemical reaction is called __________. (Bond energy, Ionization energy, Energy of Activation)

8. Oxidation of SO2 in the presence of V2O5 in Sulphuric Acid industry is an example of __________. (Homogenous catalyst, Heterogeneous catalyst, Negative catalyst)

9. Hydrolyses of ester in the presence of acid is an example of __________. (Homogenous catalyst, Heterogeneous catalyst, Negative catalyst)

10. Concentration of the reactants __________ with the passage of time during a chemical reaction. (Increases, Decreases, Does not alter)

11. Concentration of the products __________ with the passage of time during a chemical reaction. (Increases, Decreases, Does not alter)

12. The rate constant __________ with temperature for a single reaction. (Varies, Slightly Varies, Does not vary)

13. The rate of reaction at a particular time is called __________. (Average Rate of reaction, Absolute rate of reaction, Instantaneous rate of reaction)

14. The specific rate constant K has __________ value for all concentrations of the reactant. (Fixed, Variable, negligible value)

15. By increasing the surface area the rate of reaction can be __________. (Increased, Decreased, Doubled)

16. MnO2 when heated with KClO3 __________. (Gives up its own oxygen, Produces ozone O3, Acts as catalyst)

17. Reactions with high energy of activation proceed with __________. (High speed, Moderately slow speed, slow speed)

18. The minimum amount of energy required to bring about a chemical reaction is called __________. (Energy of ionization, Energy of Activation, Energy of Collision)

19. An inhibitor is a catalyst which __________ rate of reaction. (Increases, Decreases, Does not alter)

20. __________ is the change of the concentration of reactant divided by the time. (Rate of reaction, Velocity Constant, Molecularity)


II. Fill in the Blank

1. The branch of chemistry, which deals with the study of rates and mechanisms of chemical reactions, is known as __________.

2. Such reactions, which proceeds with very high velocities and are completed very quickly are called __________ reactions.

3. Such reactions, which take place very slowly, are called __________ reactions.

4. Reactions between silver nitrate and sodium chloride to form white precipitates of silver chloride are an example of __________ reaction.

5. Reactions of Organic compounds are slow and are called __________ reactions.

6. There are some reactions, which proceed slowly with a __________ speed.

7. The rate of __________ reaction can only be determined.

8. The amount of chemical change taking place in concentration of the per unit time is called __________ of reaction.

9. Rate of reaction is expressed in __________.

10. The rate of reaction between two specific interval of time is called __________.

11. The addition energy required to bring about a chemical reaction is called __________.

12. According to __________ theory for a chemical reaction to take place, the reacting molecules must come closed together.

13. The addition of __________ helps the reaction by lowering the energy of activation.

14. The rate of reaction __________ with the increase in concentration of the reacting molecules.

15. When the concentration of both the reacting molecules is double, the probability of collisions between them will be __________ times.

16. By __________ the surface area of the reactants, the rate of reaction is increased.

17. Rate of reaction generally __________ with the rise of temperature.

18. A __________ is a substance, which either accelerates or retards the rate of reaction without taking part in the reaction.

19. In the preparation of Oxygen from Potassium Chlorate, __________ is used as catalyst.

20. In the oxidation of SO2 to SO3 by the contact process for the manufacture of H2SO4 __________ is used as catalyst.

21. An unstable intermediate compound formed during a chemical reaction is called __________.

22. When a catalyst and the reactants are in the same phases, it is known as __________ catalyst.

23. When a catalyst and the reactants are in different phases, it is called __________.

24. When a catalyst increases the rate of reaction, it is called __________ catalyst.

25. When a catalyst retards the rate of reaction, it is called __________ catalyst.

26. A negative catalyst __________ the energy of activation, hence the rate of reaction is decreased.

27. The ratio between the rate of reaction and concentration of reactants is known as __________.

28. Velocity constant is independent of concentration but depends on __________.

29. Ionic reactions are __________ than molecular reactions.

30. The value of specific rates constant for a reaction __________ with time.

Tags: 

 


Click to View or Download pdf file
Click for more Chemistry Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Class 10th and 12th Term 2 Revaluation Process 2022

Evaluation of the Answer Books is done under a well-settled Policy. To ensure that the evaluation is error free, CBSE is taking several steps. After strictly following these steps, the result is prepared. Though, CBSE is having a well-settled system of assessment,...

CBSE Reading Challenge

The acquisition of 21st century competencies of communication, critical and creative thinking and the ability to locate, understand and reflect on various kinds of information has become more crucial for our learners. It is well accepted that Reading Literacy is not...

Score well in Class 12 English Boards Exam

12th Board exams are an important part of students' lives. The marks obtained in the board exam decide the college in which one can study. In class 12 the syllabus of each and every subject increases vastly and it is difficult to cover up every point. In English also...

CBSE notification 40/2021 Innovation Ambassador Program

This is with reference to CBSE Notification No. 40/2021 dated 04.05.2021 regarding the Innovation Ambassador program – An online training program for teachers by CBSE in collaboration with Ministry of Education’s Innovation Cell (MIC) and AICTE. In view of the current...

All India Children Educational Audio Video Festival

The Central Institute of Educational Technology (CIET), a constituent unit of National Council of Educational Research and Training (NCERT), is inviting entries for the 26th All India Children’s Educational Audio Video Festival (AICEAVF). This festival showcases the...

Surya Namaskar Project on 75th Anniversary of Independence Day

Ministry of Education, Govt of India vide letter No. F.No. 12-5/2020-IS-4 dated 16.12.2021 has intimated that under the banner Azadi ka Amrit Mahotsav the National Yogasanasports Federation has decided to run a project of 750 million Surya Namaskar from 01 January 2022...