Chemical Kinetics Test

Result

Chemical Kinetics Test - 32

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Weekly Quiz Competition

Question 1
4 / -1

In the first order reaction 75% of reactant disappeared in 1.386 h. Calculate the rate constant of reaction.

A

B

C

D

Solution
Question 2
4 / -1

Which of the following does not affect the rate of reaction ?

A
size of the vessel

B
physical state of reactants

C
amount of the reactants

D
∆H of reaction
Question 3
4 / -1

For an exothermic reaction an activation energy of 70 KJ mole^-1 and the enthalpy change of reaction is 30 KJ mole^-1. The activation energy for the reverse reaction is ...

A
70 KJ mole^-1

B
30 KJ mole^-1

C
40 KJ mole^-1

D
100 KJ mole^-1
Question 4
4 / -1

The rate constant of the reaction increases by ...

A
increasing the temperature

B
increasing the concentration of reactants

C
carrying out the reaction for longer period

D
adding catalyst
Question 5
4 / -1

Which of the following is the expression for Arrhenius equation ?

A

B

C

D
All the above
Question 6
4 / -1

At 290 K velocity constant of a reaction was found to be 3.2 × 10^-3 . At 300 K, it will be

A
1.6 × 10^-3

B
6.4 × 10^-3

C
3.2 × 10^-4

D
3.2 × 10^-2
Question 7
4 / -1

A

B

C

D

Solution
Question 8
4 / -1

The activation energy of a reaction is zero. The rate constant of the reaction ...

A
increase with increase of temperature

B
decrease with increase of temperature

C
decrease with decrease of temperature

D
is nearly independent of temperature

Solution
Question 9
4 / -1

Which of the following is the fast reaction ?

A

B

C

D

Solution
Question 10
4 / -1

Oxidation of oxalic acid by acidified KMnO₄ is an example of autocatalysis. It is due to which of the following ?

A

B

C

D