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CUET-UG Chemistry Test: Chemical Kinetics
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CUET-UG Chemistry Test: Chemical Kinetics
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25 Questions

1. The unit of rate constant depends upon the:
2. Which of the following will lead to an increase in the rate of the reaction?
3. Which of the following statement is not correct for the catalyst?
[NCERT Exemplar]
4. A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in figure. On the basis of this, mark the correct option.[NCERT Exemplar]
5. A first-order reaction was completed 70 percent in 20 minutes. What is the rate constant of the reaction?
6. In the presence of a catalyst, the heat evolved or absorbed during the reaction ________. [NCERT Exemplar]
7. Which of the following is a factor that automobile engines use to increase the rate of its internal reactions?
8. The slope in the plot of ln [R] vs. time gives:
9. The rate of a chemical reaction:
10. The role of a catalyst is to change ________.[NCERT Exemplar]
11. The reaction NO2 + CO - ' NO + CO2 takes place in two steps. Find the rate law.
2NO2 - ' NO + NO3 (k1) - ' slow NO3 + CO - ' CO2 + NO2 (k2) - ' fast
12. The rate constant of a reaction is 0.01 s- '1, how much time does it take for 2.4 mol L- '1 concentration of reactant reduced to ٠.٣ mol l- '1?
13. For the reaction A + H2O - ' products, find the rate of the reaction when [A] = 0.75 M, k = 0.02.
14. What is the rate law for the reaction C2H4 + I2 - ' C2H4I2?
15. What happens to the rate of the reaction on increasing its temperature?
16. Rate law for the reaction A + 2B
17. When the two reactants are in the same phase, then which common phase will ensure that the products are formed at the fastest pace?
18. If the concentration is expressed in moles per litre the unit of the rate constant for a first order reaction is:
19. The value of rate constant of a pseudo first order reaction _______.[NCERT Exemplar]
20. The decomposition of N2O5 in CCl4 solution was studied. N2O5 - ' ٢NO2 + O2. The rate constant of the reaction is 6.2 × 10- ' 4 sec- '1. Calculate the rate when the concentration of N2O5 is ١.٢٥ molar.
21. How much time does it take for reactants to reduce to 3/4 of initial concentration if the rate constant is 7.5 × 10-3 s-1?
22. The rate constant of a reaction is k = 3.28 × 10- '4 s- '1. Find the order of the reaction.
23. What is the rate law for acid hydrolysis of an ester such as CH3COOC2H5 in aqueous solution?
24. The half-life of a given reaction is doubled, if the initial concentration of the reactant is doubled. What is the order of the reaction?
25. What happens to the value of - 'G of a reaction when a catalyst is added to it?

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