मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

The rate of catalysed reaction is large than the uncatalysed reaction as _______.

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प्रश्न

The rate of catalysed reaction is large than the uncatalysed reaction as _______.

पर्याय

  • Ea is larger

  • Ea is lower

  • Ea is same

  • threshold energy is absent

MCQ
रिकाम्या जागा भरा
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उत्तर

The rate of catalysed reaction is large than the uncatalysed reaction as Ea is lower.

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पाठ 6: Chemical Kinetics - Multiple choice questions

संबंधित प्रश्‍न

Time required for 100% completion of a zero order reaction is _______.


What is half life of first order reaction if time required to decrease concentration of reactants from 0.8 M to 0.2 M is 12 hours?


Derive an expression for the relation between half-life and rate constant for first-order reaction.


The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the


In a first order reaction \[\ce{x -> y}\]; if k is the rate constant and the initial concentration of the reactant x is 0.1 M, then, the half life is


If 75% of a first order reaction was completed in 60 minutes, 50% of the same reaction under the same conditions would be completed in ____________.


Describe the graphical representation of first order reaction.


Write the rate law for the following reaction.

A reaction that is `3/2` order in x and zero order in y.


Give two examples for zero order reaction.


A zero order reaction is 20% complete in 20 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?


From the following data, show that the decomposition of hydrogen peroxide is a reaction of the first order:

t (min) 0 10 20
V (ml) 46.1 29.8 19.3

Where t is the time in minutes and V is the volume of standard KMnO4 solution required for titrating the same volume of the reaction mixture.


A first order reaction is 40% complete in 50 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?


The rate of the reaction \[\ce{A + B -> C}\] is 3.6 × 10−2 mol dm−3 s−1 when [A] = 0.3 mol dm−3 and [B] = 0.2 mol dm−3. Calculate k if reaction is first order in A and zero order in B.


A first order reaction has rate constant 1 × 10−2 s−1. What time will, it take for 20 g or reactant to reduce to 5 g?


In a first order reaction, the concentration of the reactant is reduced to 25% in one hour. The half-life period of the reaction is ____________.


The integrated rate equation for first-order reaction, A → product, is ______.


If time required to decrease concentration of reactant from 0.8 M to 0.2 M is 12 hours, the half life of this first order reaction is ____________.


For the first order reaction, plot of log10 [A]t against time 't' is a straight line with a negative slope equal to ____________.


For first order reaction the slope of the graph of log10 [A]t Vs. time is equal to ____________.


In the reaction \[\ce{2SO2 + O2 -> 2SO3}\] the rate of appearance of SO3 is 4 × 10−4 M/s, the rate of disappearance of O2 is ____________.


The time taken for 80% of a first order reaction to be complete is approximately ____________.


Which among the following is an example of pseudo first order reaction?


A first order reaction is 50% completed in 16 minutes. The percentage of reactant that will react in 32 minutes is ____________.


What is the unit of rate constant for the zero order reaction?


The integrated rate law is a direct relationship between time and ______


Which of the following reactions is not of the first order?


Which among the following reactions is an example of pseudo first order reaction?


The rate constant for a first order reaction is 7.0 × 10-4 s-1. If initial concentration of reactant is 0.080 M, what is the half-life of reaction?


The half-life of first order reaction is 1.7 hour. What is its rate constant?


What are integrated rate laws?


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