NEET Chemistry Chemical Kinetics Online Test Set C

1. The bromination of acetone that occurs in acid solution is represented by this equation These kinetic data were obtained for given reaction concentrations Based on these data, the rate equation is

2. The rate constants k₁ and k₂ for two different reactions are 10¹⁶ e^-2000/T and 10¹⁵ e^-1000/T respectively. The temperature at which k₁= k₂ is

3. For the reaction A + B → Products, it is observed that (a) On doubling the initial concentration of A only, the rate of reaction is also doubled and (b) On doubling the initial concentrations of both A and B, there is a change by a factor of 8 in the rate of the reaction. The rate of this reaction is given by

4. Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is

5. In the reaction, The rate of appearance of bromine (Br₂) is related to rate of disappearance of bromide ions as following

6. For the reaction, N₂+ 3H₂ → 2NH₃,

7. The rate of the reaction, 2NO + Cl₂→2NOCl is given by the rate equation rate = k[NO]₂[Cl₂] The value of the rate constant can be increased by

8. During the kinetic study of the reaction, 2A+B → C+D, following results were obtained Based on the above data which one of the following is correct ?

9. For an endothermic reaction, energy of activation is E_a and enthalpy of reaction is ëÓH (both of these in kJ/mol). Minimum value of E_a will be

10. For the reaction, N₂O₅(g) - 2NO₂ (g) + 1/2 O₂(g), the value of rate of disappearance of N₂O₅ is given as 6.25 x 10^-3 mol L^-1s^-1. The rate of formation of NO₂ and O₂is given respectively as

11. The half life of a substance in a certain enzyme- catalysed reaction is 138 s. The time required for the concentration of the substance to fall from 1.28 mg L^-1 to 0.04 mg L^-1 is

12. The unit of rate constant for a zero order reaction is

13. Which one of the following statements for the order of a reaction is incorrect?

14. In a reaction, A + B → Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled, rate law for the reaction can be written as

15. What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20°C to 35°C? (R = 8.314 J mol^-1K^-1)

16. In a zero order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become

17. A reaction having equal energies of activation for forward and reverse reactions has

18. When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is

19. The activation energy of a reaction can be determined from the slope of which of the following graphs?

20. The rate constant of the reaction A → B is 0.6 x 10^-3 mole per second. If the concentration of A is 5 M, then concentration of B after 20 minutes is

21. If, find B%

22. The reaction A → B follows first order kinetics. The time taken for 0.80 mole of A to produce 0.60 mole of B is 1 hour. What is the time taken for conversion of 0.90 mole of A to produce 0.675 mole of B?

23. If the rate of reaction increases by 27 times, when temperature is increased by 30 K, then temperature coefficient of the reaction is

24. Two substances A and B are present such that [A]₀= 4[B]₀and half life of A is 5 minute and that of B is 15 minute. If they start decaying at the same time following first order kinetics how much time will the concentration of both of them would be the same?

25. The rate constant of the production of 2B(g) by the reaction, A 1 : 1 molar ratio of A to B in the reaction mixture is attained after

26. In Arrhenius equation, A may not be termed as rate constant

27. The rate constant of a reaction is 1.5 ÌÑ 107 s^-1 at 50°C and 4.5 ÌÑ 107 s^-1 at 100°C. What is the value of activation energy?

28. Which of the following is correct?

29. The inversion of a sugar follows first-order rate equation which can be followed by noting the change in the rotation of the plane of polarization of light in the polarimeter. If r_∝, r_ζ and r₀ are the rotations at t = ∝, t = t, and t = 0, then the first order reaction can be written as:

30. For a gaseous phase reaction 2A + B₂ → 2AB, the following rate data was obtained at 300K The rate constant for the reaction is