# Chemical Kinetics Factors Influencing Rate of a Reaction

## Chemical Kinetics Factors Influencing Rate of a Reaction

These Chemical Kinetics Questions and Answers PDF are prepared by our Livelearns team for NEET and JEE Mains. These Chemical Kinetics NEET Questions are based on the chapter on Chemistry Chemical Kinetics Preparation of these questions has been taken from various books including NCERT, Previous year’s question papers, and model papers. So these Chemical Kinetics JEE Questions cover all the class 12 subject chemistry topics of Chemical Kinetics, These MCQs are very helpful in your preparation for the National Eligibility cum Entrance Test-UG (NEET) and JEE mains. We have provided these questions in PDF format which you can Download by clicking the link as provide below. These Chemical Kinetics JEE Mains Questions PDF are absolutely FREE for you from Livelearns Team.

## CHEMICAL KINETICS Questions and Answers PDF

Chemical Kinetics All Topics Are Cover Click One By One To Read Everythings

1. Write the unit of rate of reaction.

Ans. mole lit–¹ sec–¹

1. A substance with initial concentration 2M follows zero order kinetics with rate constant 2 x 10 M sec. How long will this reaction take to go to completion ?

Ans. We know K = x/t

Here x 2M, K = 2 x 10-2M sec

t=x/k{ 2m/ 2×10 M sec=100 sec

Hence it will take 100 sec for completion of the
reaction.

1. The rate of reaction is doubled for every 10°C rise in temperature. If the temp is raised from 30°C to 70°C the rate of reaction will be increased by how many times ?

Ans. Rise in temperature 40°C
Rate of reaction will be, 24=16 times the initial rate.

1. Inversion of Cane Sugar is an example of -order reaction.

Ans. Pseudofirst

1. What is the relationship between rate constant and half life period of a 1st order reaction ?

Ans. t1/2=(0.693/k)
K = rate constant of the reaction.
half life period of the reaction.

1. Activation energy for a chemical reaction depends upon.

Ans. Nature of reactant.

1. For a 1st order reaction the time required for times, the time required 75% completion is – for 50% completion.

Ans. 2

1. In all reactions increase in concentration of reactants increases rate of reaction. Yes or No.

Ans. No, in zero order reactions rate of reaction is independent of concentration of reactant.

1. The unstable intermediate compound formed by reactants after absorption of activation energy is called as___

Ans. Activated complex

1. Decomposition of H202 takes place in the following way

H2O,→ H20+0] x 2 (slow)

## O+0- 02 (fast)

2H202→2H20+02
What is the order of overall reaction ?

Ans. Order is determined from the slowest step. So order of the reaction is 1.