Class 12 Chemistry Chapter 4 Online Test – Chemical Kinetics

Class 12 Chemistry Chapter 4 Online Test 2027: हेलो बच्चों, Class 12 Chemistry के Chapter 4 Chemical Kinetics (रासायनिक गतिकी) का Online Test विद्यार्थियों के लिए उपलब्ध है। इस टेस्ट के माध्यम से आप Chapter के महत्वपूर्ण Concepts और Objective Questions की Practice कर सकते हैं।
Chemical Kinetics में Rate of Reaction, Factors Affecting Reaction Rate, Rate Law, Order of Reaction, Molecularity, Integrated Rate Equations, Half-Life और Arrhenius Equation जैसे महत्वपूर्ण Topics पढ़ाए जाते हैं।
देखें इस पोस्ट में क्या-क्या है -
Class 12 Chemistry Chapter 4 Online Test 2027

Chapter पढ़ने के बाद Objective Questions हल करना आपकी तैयारी को Check करने का अच्छा तरीका है। नीचे दिए गए Online Test को Attempt करके अपनी तैयारी का मूल्यांकन करें।

                
                
                
                    
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                    12th Chemistry Chapter 4 Online Test
                    तैयारी में दम है तो 25 मे से 20 सही कर के दिखाओ

                    
                    
                    
                    
                    
                    
                    
                    
                    
                

                                    
                                    
                                        
                                        
                                            
                                            
                                        
                                    
                                  

                    
                    
                    1 / 26
                    
                        
                        
                                The half-life of a first-order reaction is independent of:

                            
                            
                        
            
                

                

                Temperature

            
            
                

                

                Initial concentration of reactants

            
            
                

                

                Catalyst

            
            
                

                

                Nature of reactants

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    2 / 26
                    
                        
                        
                                The temperature coefficient of most reactions lies between:

                            
                            
                        
            
                

                

                1 and 2

            
            
                

                

                2 and 3

            
            
                

                

                3 and 4

            
            
                

                

                1 and 4

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    3 / 26
                    
                        
                        
                                In a first-order reaction, the time required for 99.9% completion is approx:

                            
                            
                        
            
                

                

                2 times the half-life

            
            
                

                

                5 times the half-life

            
            
                

                

                10 times the half-life

            
            
                

                

                100 times the half-life

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    4 / 26
                    
                        
                        
                                The minimum amount of energy required by a reactant molecule to participate in a reaction is:

                            
                            
                        
            
                

                

                Kinetic energy

            
            
                

                

                Potential energy

            
            
                

                

                Activation energy

            
            
                

                

                Thermal energy

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    5 / 26
                    
                        
                        
                                The unit of rate constant (k) for a zero-order reaction is:

                            
                            
                        
            
                

                

                s^-1

            
            
                

                

                mol L-1  s-1

            
            
                

                

                L  mol^-1 s^-1

            
            
                

                

                L^2  mol^-2  s^-1

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    6 / 26
                    
                        
                        
                                For a reaction  A+B ----- Products, the rate law is Rate = k[A]^2 [B]^1. The overall order is:

                            
                            
                        
            
                

                

                1

            
            
                

                

                2

            
            
                

                

                3

            
            
                

                

                0

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    7 / 26
                    
                        
                        
                                The slope of a graph between log k and 1/T (Arrhenius plot) is:

                            
                            
                        
            
                

                

                -Ea/2.303R

            
            
                

                

                Ea/2.303R

            
            
                

                

                -Ea/R

            
            
                

                

                A/2.303R

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    8 / 26
                    
                        
                        
                                Radioactive decay follows which order of kinetics?

                            
                            
                        
            
                

                

                Zero order

            
            
                

                

                First order

            
            
                

                

                Second order

            
            
                

                

                Third order

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    9 / 26
                    
                        
                        
                                The order of reaction for H2(g)+Cl2(g)-------{hv}2HCl(g) is:

                            
                            
                        
            
                

                

                0

            
            
                

                

                1

            
            
                

                

                2

            
            
                

                

                3

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    10 / 26
                    
                        
                        
                                The half-life of a first-order reaction is independent of:

                            
                            
                        
            
                

                

                Temperature

            
            
                

                

                Initial concentration of reactants

            
            
                

                

                Catalyst

            
            
                

                

                Nature of reactants

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    11 / 26
                    
                        
                        
                                If the concentration of reactant is doubled, the half-life of a zero-order

                            
                            
                        
            
                

                

                Is doubled

            
            
                

                

                Is halved

            
            
                

                

                Remains same

            
            
                

                

                Becomes four times

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    12 / 26
                    
                        
                        
                                Rate of reaction depends upon:

                            
                            
                        
            
                

                

                Temperature

            
            
                

                

                Concentration

            
            
                

                

                Surface area

            
            
                

                

                All of the above

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    13 / 26
                    
                        
                        
                                The half-life of a first-order reaction is independent of:

                            
                            
                        
            
                

                

                Temperature

            
            
                

                

                Initial concentration of reactants

            
            
                

                

                Catalyst

            
            
                

                

                Nature of reactants

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    14 / 26
                    
                        
                        
                                Molecularity of a reaction can never be:

                            
                            
                        
            
                

                

                1

            
            
                

                

                2

            
            
                

                

                3

            
            
                

                

                0 or fractional

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    15 / 26
                    
                        
                        
                                The order of a reaction is determined by:

                            
                            
                        
            
                

                

                Molecularity

            
            
                

                

                Balanced chemical equation

            
            
                

                

                Experimentally (Rate Law)

            
            
                

                

                Pressure only

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    16 / 26
                    
                        
                        
                                An increase in 10°C temperature usually _____ the rate of reaction.

                            
                            
                        
            
                

                

                Doubles

            
            
                

                

                Halves

            
            
                

                

                Triples

            
            
                

                

                Remains same

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    17 / 26
                    
                        
                        
                                The rate constant of a reaction depends upon:

                            
                            
                        
            
                

                

                Temperature

            
            
                

                

                Time

            
            
                

                

                Initial concentration

            
            
                

                

                Extent of reaction

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    18 / 26
                    
                        
                        
                                The minimum amount of energy required by a reactant molecule to participate in a reaction is:

                            
                            
                        
            
                

                

                Kinetic energy

            
            
                

                

                Potential energy

            
            
                

                

                Activation energy

            
            
                

                

                Thermal energy

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    19 / 26
                    
                        
                        
                                The half-life period (t_{1/2}) of a first-order reaction is:

                            
                            
                        
            
                

                

                0.693/k

            
            
                

                

                k/0.693

            
            
                

                

                2.303/k

            
            
                

                

                0.303/k

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    20 / 26
                    
                        
                        
                                The threshold energy is equal to:

                            
                            
                        
            
                

                

                Activation energy + Average kinetic energy of molecules

            
            
                

                

                Activation energy – Average kinetic energy of molecules

            
            
                

                

                Activation energy (times ) Average kinetic energy of molecules

            
            
                

                

                None of these

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    21 / 26
                    
                        
                        
                                The value of order of reaction can be:

                            
                            
                        
            
                

                

                Positive

            
            
                

                

                Negative

            
            
                

                

                Fractional

            
            
                

                

                All of these

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    22 / 26
                    
                        
                        
                                For which order of reaction, half-life is inversely proportional to initial concentration?

                            
                            
                        
            
                

                

                Zero

            
            
                

                

                First

            
            
                

                

                Second

            
            
                

                

                Third

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    23 / 26
                    
                        
                        
                                The rate of reaction increases with increase in temperature because:

                            
                            
                        
            
                

                

                Threshold energy decreases

            
            
                

                

                Activation energy increases

            
            
                

                

                Number of effective collisions increases

            
            
                

                

                None of these

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    24 / 26
                    
                        
                        
                                Hydrolysis of ethyl acetate in acidic medium is an example of:

                            
                            
                        
            
                

                

                First-order reaction

            
            
                

                

                Second-order reaction

            
            
                

                

                Pseudo first-order reaction

            
            
                

                

                Zero-order reaction

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    25 / 26
                    
                        
                        
                                The unit of rate of reaction is:

                            
                            
                        
            
                

                

                mol L^-1 s^-1

            
            
                

                

                L mol^-1 s^-1

            
            
                

                

                mol L  s

            
            
                

                

                mol^-1. L^-1 s

            
                        
                        
                        
                        
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

                    
                    
                    26 / 26
                    
                        
                        
                                A catalyst increases the rate of reaction by:

                            
                            
                        
            
                

                

                Increasing activation energy

            
            
                

                

                Decreasing activation energy

            
            
                

                

                Increasing collision frequency

            
            
                

                

                Decreasing enthalpy

            
                        
                        
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                        
                        
                            
                           
                        
                        
                    
                

            
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Chapter: Chemical Kinetics
Hindi Name: रासायनिक गतिकी
Class: 12th
Subject: Chemistry
Nesar Sir
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Class 12 Chemistry Chapter 4 Online Test 2027

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