Which of the following is not an example of second order reaction?

Gaseous decomposition of hydrogen iodide

Acid catalyzed hydrolysis of ester

Gaseous decomposition of hydrogen iodide

For a first order reaction, the half life period is independent of the ___________

Final concentration of the reactants

Initial concentration of the reactants

Final concentration of the reactants

The half-life period of zero order reaction is directly proportional to the ___________

Final concentration of reactants

Initial concentration of reactants

Final concentration of reactants

Which of the following is not an example of second order reaction?$

Gaseous decomposition of hydrogen iodide

Acid catalyzed hydrolysis of ester

Gaseous decomposition of hydrogen iodide

For a first order reaction, the half life period is independent of the

Final concentration of the reactants

Initial concentration of the reactants

Final concentration of the reactants

Which of the following is not an example of zero order reaction?

Photochemical combination of hydrogen and chlorine

Decomposition of ammonia over molybdenum surface

Thermal decomposition of HI on gold surface

Inversion of cane sugar in the presence of mineral acids

The half-life period of zero order reaction is directly proportional to the

Final concentration of reactants

Initial concentration of reactants

Final concentration of reactants

24 + Mcqs in Integrated Rate Equation Half Lives in Engineering Chemistry Page 1 McqOptions

1.	The order of the reaction, if the time of half-completion is changed from 50 sec to 25 sec, when the initial concentration is changed from 0.5 to 1M will be ___________
A.	0
B.	1
C.	2
D.	3
Answer» D. 3

Discussion

2.	The half life period of nth order reaction varies inversely to ____________ th power of the initial concentration of the reactants.
A.	n
B.	2n
C.	(n+1)
D.	(n-1)
Answer» E.

Discussion

3.	Which of the following is not an example of second order reaction?
A.	Oxidation of hydrogen bromide
B.	Saponification of ester
C.	Acid catalyzed hydrolysis of ester
D.	Gaseous decomposition of hydrogen iodide
Answer» D. Gaseous decomposition of hydrogen iodide

Discussion

4.	For a second order reaction, the rate is proportional to the square root of the concentration of the same reactant.
A.	True
B.	False
Answer» C.

Discussion

5.	The half life period of first order reaction is 15 min. Its rate constant will be equal to ___________
A.	0.0462 min-1
B.	0.462 min-1
C.	0.00462 min-1
D.	0.562 min-1
Answer» B. 0.462 min-1

Discussion

6.	In a first order reaction, the time required for the completion of 99% is _______ times the time required for the completion of half of the reaction.
A.	5
B.	10
C.	20
D.	50
Answer» C. 20

Discussion

7.	A compound decomposes according to the first order rate law with a half life period of 30 min. What will be the fraction of the remaining compound after 120 min?
A.	0.625
B.	0.0625
C.	0.25
D.	0.025
Answer» C. 0.25

Discussion

8.	The thermal decomposition of nitrogen pentaoxide in the gaseous phase is the example of ___________
A.	Zero order reaction
B.	Half order reaction
C.	First order reaction
D.	Second order reaction
Answer» D. Second order reaction

Discussion

9.	For a first order reaction, the half life period is independent of the ___________
A.	Initial concentration of the reactants
B.	Final concentration of the reactants
C.	Rate constant
D.	Concentration of products
Answer» B. Final concentration of the reactants

Discussion

10.	The half-life period of zero order reaction is directly proportional to the ___________
A.	Rate constant
B.	Initial concentration of reactants
C.	Final concentration of reactants
D.	Concentration of products
Answer» C. Final concentration of reactants

Discussion

11.	For a zero order reaction, the rate of reaction is independent of ___________
A.	Temperature
B.	Nature of reactants
C.	Concentration of reactants
D.	Effect of catalyst
Answer» D. Effect of catalyst

Discussion

12.	FOR_A_SECOND_ORDER_REACTION,_THE_RATE_IS_PROPORTIONAL_TO_THE_SQUARE_ROOT_OF_THE_CONCENTRATION_OF_THE_SAME_REACTANT.?$
A.	True
B.	False
Answer» C.

Discussion

13.	THE_HALF_LIFE_PERIOD_OF_FIRST_ORDER_REACTION_IS_15_MIN._ITS_RATE_CONSTANT_WILL_BE_EQUAL_TO?$
A.	0.0462 min<sup>-1</sup>
B.	0.462 min<sup>-1</sup>
C.	0.00462 min<sup>-1</sup>
D.	0.562 min<sup>-1</sup>
Answer» B. 0.462 min<sup>-1</sup>

Discussion

14.	The half life period of n^th order reaction varies inversely to ____________ ^th power of the initial concentration of the reactants.$
A.	n
B.	2n
C.	(n+1)
D.	(n-1)
Answer» E.

Discussion

15.	Which of the following is not an example of second order reaction?$
A.	Oxidation of hydrogen bromide
B.	Saponification of ester
C.	Acid catalyzed hydrolysis of ester
D.	Gaseous decomposition of hydrogen iodide
Answer» D. Gaseous decomposition of hydrogen iodide

Discussion

16.	The order of the reaction, if the time of half-completion is changed from 50 sec to 25 sec, when the initial concentration is changed from 0.5 to 1M will be
A.	0
B.	1
C.	2
D.	3
Answer» D. 3

Discussion

17.	In a first order reaction, the time required for the completion of 99% is _______ times the time required for the completion of half of the reaction?
A.	5
B.	10
C.	20
D.	50
Answer» C. 20

Discussion

18.	In a first order reaction, the time required for the completion of 99% is _______ for its 90% completion.
A.	Same
B.	Negligible
C.	Thrice
D.	Twice
Answer» E.

Discussion

19.	A compound decomposes according to the first order rate law with a half life period of 30 min. What will be the fraction of remaining compound after 120 min?
A.	0.625
B.	0.0625
C.	0.25
D.	0.025
Answer» C. 0.25

Discussion

20.	The thermal decomposition of nitrogen pentaoxide in the gaseous phase is the example of
A.	Zero order reaction
B.	Half order reaction
C.	First order reaction
D.	Second order reaction
Answer» D. Second order reaction

Discussion

21.	For a first order reaction, the half life period is independent of the
A.	Initial concentration of the reactants
B.	Final concentration of the reactants
C.	Rate constant
D.	Concentration of products
Answer» B. Final concentration of the reactants

Discussion

22.	Which of the following is not an example of zero order reaction?
A.	Photochemical combination of hydrogen and chlorine
B.	Decomposition of ammonia over molybdenum surface
C.	Thermal decomposition of HI on gold surface
D.	Inversion of cane sugar in the presence of mineral acids
Answer» E.

Discussion

23.	The half-life period of zero order reaction is directly proportional to the
A.	Rate constant
B.	Initial concentration of reactants
C.	Final concentration of reactants
D.	Concentration of products
Answer» C. Final concentration of reactants

Discussion

24.	For a zero order reaction, the rate of reaction is independent of
A.	Temperature
B.	Nature of reactants
C.	Concentration of reactants
D.	Effect of catalyst
Answer» D. Effect of catalyst

Discussion

Explore topic-wise MCQs in Engineering Chemistry.

The order of the reaction, if the time of half-completion is changed from 50 sec to 25 sec, when the initial concentration is changed from 0.5 to 1M will be ___________

The half life period of nth order reaction varies inversely to ____________ th power of the initial concentration of the reactants.

Which of the following is not an example of second order reaction?

For a second order reaction, the rate is proportional to the square root of the concentration of the same reactant.

The half life period of first order reaction is 15 min. Its rate constant will be equal to ___________

In a first order reaction, the time required for the completion of 99% is _______ times the time required for the completion of half of the reaction.

A compound decomposes according to the first order rate law with a half life period of 30 min. What will be the fraction of the remaining compound after 120 min?

The thermal decomposition of nitrogen pentaoxide in the gaseous phase is the example of ___________

For a first order reaction, the half life period is independent of the ___________

The half-life period of zero order reaction is directly proportional to the ___________

For a zero order reaction, the rate of reaction is independent of ___________

FOR_A_SECOND_ORDER_REACTION,_THE_RATE_IS_PROPORTIONAL_TO_THE_SQUARE_ROOT_OF_THE_CONCENTRATION_OF_THE_SAME_REACTANT.?$

THE_HALF_LIFE_PERIOD_OF_FIRST_ORDER_REACTION_IS_15_MIN._ITS_RATE_CONSTANT_WILL_BE_EQUAL_TO?$

The half life period of nth order reaction varies inversely to ____________ th power of the initial concentration of the reactants.$

Which of the following is not an example of second order reaction?$

The order of the reaction, if the time of half-completion is changed from 50 sec to 25 sec, when the initial concentration is changed from 0.5 to 1M will be

In a first order reaction, the time required for the completion of 99% is _______ times the time required for the completion of half of the reaction?

In a first order reaction, the time required for the completion of 99% is _______ for its 90% completion.

A compound decomposes according to the first order rate law with a half life period of 30 min. What will be the fraction of remaining compound after 120 min?

The thermal decomposition of nitrogen pentaoxide in the gaseous phase is the example of

For a first order reaction, the half life period is independent of the

Which of the following is not an example of zero order reaction?

The half-life period of zero order reaction is directly proportional to the

For a zero order reaction, the rate of reaction is independent of

The half life period of n^th order reaction varies inversely to ____________ ^th power of the initial concentration of the reactants.$