CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set B

CBSE Class 12 Chemistry Chemical Kinetics (1). CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.

Chapter:4 (Chemical Kinetics)

State whether given statement is true or false.

1. The unit of K for first order reaction is molL-1s-1. ( )

2. The radioactive decay follows zero order kinetics. ( )

3. For r =k[A]2[B],the order of reaction is 3 ( )

4. For second order reaction unit of k is mol-2L2s-1. ( )

5. For a reaction order and molecularity are always same. ( )

6. Order of reaction is always a whole number whereas molecularity can be fractional. ( )

MCQ

1.The order of reaction for,r=k[A]2[B] is

(a). 1 b) 0 (c)2 (d) 3

2.A reaction 50% complete in 2 hours and 75% in 4 hours, the order of reaction will be

(a).0 b) 1 (c)2 (d) 3

3.For a reaction A+B → C,the rate law is given by r=k[A]1/2[B]2 the order of reaction is:

(a).0 b) 5/2 (c)2 (d) 3/2

4. What is the unit of K if rate ==K{A}2{B}

(a) s-1 (b) mol L-1 (c) mol-2L2s-1 (d) mol-1Ls-1

5.What is the molecularity of reaction for the following elementary reaction:

2A+B------------------------→C

(a) 1 (b) 2 (c) 3 (d) 0

6.What is the order for following photochemical reaction:

H2+Cl2------------→2HCl 

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