CUET-UG SERIES

Chemistry

Rate Constant

4 previous year questions.

Volume: 4 Ques

Yield: Medium

High-Yield Trend

4

2023

Chapter Questions
4 MCQs

01

PYQ 2023

medium

chemistry ID: cuet-ug-

A first order reaction is found to have a rate constant, . Find the half life of the reaction.

1

t ½ =0.693 s

2

t ½ =5.5x10 13 s

3

t ½ = 2.303x10 13 s

4

t ½ = 1.26x10 13 s

02

PYQ 2023

medium

chemistry ID: cuet-ug-

Rate of a particular reaction is represented by: Rate = The unit of rate constant K' in this case will be

1

2

3

4

03

PYQ 2023

easy

chemistry ID: cuet-ug-

The rate constants of a reaction at 200 K and 300 K are 0.02 s -1 and 0.04 s -1 . Ea for this reaction will be:

1

2.9 kJ/mol

2

3.4 kJ/mol

3

34.5 kJ/mol

4

344 kJ/mol

04

PYQ 2023

medium

chemistry ID: cuet-ug-

Unit of rate constant for zero order reaction is:

1

s -1

2

mol -1 L s -1

3

mol L -1,s -1

4

mol -1, L -1 s