Chemical Kinetics

Subject matter experts of JagranJosh have developed chapter wise practice questions of Class 12th as per the relevancy of the chapter in the CBSE board exam. This practice set contains 10 questions with detailed explanations on “Chapter: Chemical Kinetics” of Chemistry.

  • Q1.The plot of concentration of the reactant vs. time for a reaction is a straight line with a negative slope. The reaction follows a

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  • Q2.Activation energy of a chemical reaction can be determined by

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  • Q3.Half life of a first order reaction is 4 s and the initial concentration of the reactants is 0.12 M. The concentration of the reactant left after 16 s is

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  • Q4.In the following reaction, how is the rate of appearance of the underlined product related to the rate of disappearance of the underlined reactant?
    Br O 3 + 5B r + 6 H + 3B r 2(l) + 3 H 2 O (l)

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  • Q5.The activation energy for a simple chemical reaction A → B is Ea in forward direction. The activation energy for reverse reaction

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  • Q6. The rate of the reaction 2 N 2 O 5 4N O 2 +  O 2  can be written in three ways: d[ N 2 O 5 ]/dt = k[ N 2 O 5 ] d[ N O 2 ]/dt = k[ N 2 O 5 ] d[ O 2 ]/dt = k[ N 2 O 5 ] The relationship between k and k and between k and k are:

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  • Q7.If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately
    (log 4 = 0.60, log 5 = 0.69).

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