ECAT Pre Engineering Chemistry Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 11 Reaction Kinetics

Try The MCQ's Test For ECAT Chemistry Chapter 11 Reaction Kinetics

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ECAT Chemistry Chapter 11 Reaction Kinetics

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Question # 1

The rate equation for a reaction is Rate =k[A]. what are unit of K ?

Question # 2

Dilatometer method is useful for the reaction that involve :

Question # 3

With increases in temperature of 10 K of the reacting gases the rate of reaction is doubled because

Question # 4

With the progressive of the reaction the slope of the curve between concentration of product and time

Question # 5

When the rate of reaction is entirely independent of the conc. of reaction molecules then order of reaction is

Question # 6

The effective activity of a metal catalyst is increased if it is in

Question # 7

A white precipitate ofsilver chlorideimmediately formed on additionof :

Question # 8

Rate of chemical reaction depends upon :

Question # 9

Which of the following reactions occur at moderate rate :

Question # 10

In the rate equation when the concentration of reactants are unity, then rate is equal to

Question # 11

Activation energy is the difference of energy between the energy of the reactant and

Question # 12

A substance which increases the rate of a reaction without being consumed during the reaction is called

Question # 13

Which statement about Arrhenius equation is incorrect

Question # 14

The rate of reaction :

Question # 15

If the rate equation of a reaction 2A+B-------->Products is , Rate = K[A] [B], and A is present in large excess, then order of reaction is :

Question # 16

In the hydrolysis of CH3COOC2H5the acid produced is

Question # 17

The rate of reaction determined at a given time is called

Question # 18

In the manufacture of NH3by Haber's process catalyst used is iron its catalytic efficiency is poisoned by

Question # 19

Half life period of a first order reaction is independent of:

Question # 20

The chemical method used for determination of rate of reaction is

Question # 21

Rate law of an equation is obtained :

Question # 22

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

Question # 23

When copper is allowed to react with HNO3, the reaction is slow in the beginning, finally becomes very fast. It is due to the formation of an auto catalyst which is

Question # 24

In the expression rate = K [A]a[B]bK is

Question # 25

Hydrolysis of ethyl-acetate (ester) has order of reaction :

Question # 26

Optical rotation method is sued when

Question # 27

Decreases om concentration of reactant is denoted by

Question # 28

The example of a photo chemical reaction is photosynthesis has order of reaction :

Question # 29

Which one of the following reaction rate is effected by the light

Question # 30

For a chemical reaction to take place the particles must have sufficient energy for the effective collisions, the energy is called

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ECAT Chemistry Chapter 11 Important MCQ's

Sr.# Question Answer
1 Half life period of N2O5is 24 minutes and it remains same where we increase or decrease its initial concentration, then reactions
A. Zero order
B. First order
C. Second order
D. Third order
2 In zero order reaction, the rate is independent of :
A. Temperature of reaction
B. Concentration ofreactants
C. Concentration of products
D. None of these.
3 Which of the following may affect the rate constant (k) fro a reaction :
A. Change in concentration.
B. Change in pressure.
C. Change in pH.
D. Change in temperature.
4 When we perform the same reaction by taking two different initial concentrations of a reactant for a second order reaction then
A. Reaction becomes exothermic
B. Energy of activation is different
C. Mechanism of reaction is changed
D. Half life period is changed
5 If half life period of a reaction is independent of the concentration of the reactants, then the reaction is
A. Zero order
B. First order
C. Second order
D. Order is in fraction
6 The chemical method used for determination of rate of reaction is
A. Spectroscopic
B. Conductiometric
C. Refractometric
D. Titration
7 When the rate of reaction is entirely independent of the conc. of reaction molecules then order of reaction is
A. Zero
B. First
C. Second
D. Third
8 Which of the following will affect the rate :
A. First step of reaction.
B. Last step of reaction.
C. Rate determining step.
D. Fastest step.
9 The change in concentration of reactant or product per unit time is called :
A. Rate constant.
B. Rate of reaction.
C. Rate equation.
D. Rate law.
10 When copper is allowed to react with HNO3, the reaction is slow in the beginning, finally becomes very fast. It is due to the formation of an auto catalyst which is
A. Cu(NO3)2
B. CuO
C. O2
D. HNO2

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