Chemistry Reaction Kinetics Test Online Mcqs Preparation

Chemistry Reaction Kinetics Test Online Mcqs Preparation With Answers Start Below

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Question 1 of 15

1. The unit of rate constant depends on?

A. Order of reaction

B. Number of reactants

C. Molecularity of reaction

D. Concentration terms

Question 1 of 15

Question 2 of 15

2. Which one is chemical method for the determination of rate of reaction?

A. Spectrometry

B. Dilatometric method

C. Titration

D. Refractrometric method

Question 2 of 15

Question 3 of 15

3. The half life time for a 1^st order decomposition of a substance dissolved in CCl₄ is 2.5 hours at 30°C. The amount of substance left after 10 hours if the initial weight of the substance is 160g:

A. 15g

B. 10

C. 5g

D. 20g

Question 3 of 15

Question 4 of 15

4. The unit of rate constant of second order reaction is:

A. sec-1

B. mol-1 dm+3 sec-1

C. mol-2 dm+6

D. mol dm-3 sec-1

Question 4 of 15

Question 5 of 15

5. For a chemical reaction to occur

A. Reacting molecules must be properly oriented and energy more than or equal to Ea

B. The vessel shall be open

C. The reacting molecules must not collide with each other

D. Reacting molecules should have less energy than Ea at time of collision

Question 5 of 15

Question 6 of 15

6. The rate expression for a reaction A+B → products is rate = k [A]^2/3 [B]^-1/2 the order of reaction is

A. 1

B. 5/2

C. 0

D. 3/2

Question 6 of 15

Question 7 of 15

7. The specific rate constant of chemical reaction is the rate of the reaction when the concentration of the reactant is:

A. Greater than unity

B. Equal to unity

C. Less than unity

D. Equal to the concentration of 2nd order reaction

Question 7 of 15

Question 8 of 15

8. Which one affects the specific rate constant?

A. Temperature

B. Concentration of reactants

C. All of these

D. Catalyst

Question 8 of 15

Question 9 of 15

9. The influence of temperature on reaction rate is predicted by

A. Kinetic equation

B. Vander waal’ equation

C. Arrhenius equation

D. Free energy change of reaction

Question 9 of 15

Question 10 of 15

10. The half life period of zero order reaction is equal to

A. 1.5/Ka2

B. 0.693/K

C. 1/Ka

D. a/2

Question 10 of 15

Question 11 of 15

11. The 2^nd order reaction becomes 1^st when:

A. None of the reactants is in large excess

B. One of the reactants is limiting

C. One of the reactant is acidic

D. One of the reactants is in large excess

Question 11 of 15

Question 12 of 15

12. A catalyst can:

A. Retard the reaction rate

B. Accelerate the reaction rate

C. Chemically un-consumed at the end of the reaction

D. All of the above

Question 12 of 15

Question 13 of 15

13. For the 1^st order decomposition reaction 2N₂O₅ (g) → 4NO_2(g) + O_2(g) the half life is given as:

A. 0.693/2k

B. log2/k

C. 0.693/k

D. ln2/k

Question 13 of 15

Question 14 of 15

14. The unit of rate constant is the same as that of the rate of reaction in:

A. Zero order reaction

B. 1st order reaction

C. 3rd order reaction

D. 2nd order reaction

Question 14 of 15

Question 15 of 15

15. Oxidation of SO_2(g) in the presence of V₂O_5(s) is an example of:

A. Negative catalysis

B. Auto catalysis

C. Homogeneous catalysis

D. Heterogeneous catalysis

Question 15 of 15

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Chemistry Reaction Kinetics Test Online Mcqs Preparation

Chemistry Reaction Kinetics Test Online Mcqs Preparation With Answers Start Below

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