Class 12th Chemistry Chapter Chemical Kinetics free mcq test quiz

Are you ready to put your knowledge of Chemical Kinetics to the test? Get ready to dive into the exciting world of reaction rates, rate laws, and reaction mechanisms with our free test quiz for Chapter Chemical Kinetics!

Check Class 12th Chemistry Chemical Kinetics Chapter Knowledge

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12th Chemistry: Chemical Kinetics

1 / 10

1. A reaction involving two different reactants can never be

bimolecular reaction

second order reaction

first order reaction

unimolecular reaction

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2 / 10

2. The rate of the reaction 2NO + Cl₂ →2NOCl is given by the rate equation rate = k [NO]₂[Cl₂]
The value of the rate constant can be increased by:

increasing the concentration of NO.

increasing the temperature.

increasing the concentration of the Cl₂

doing all of the above

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3 / 10

3. Which one of the following reactions is a true first order reaction?

Alkaline hydrolysis of ethyl acetate

Acid catalyst hydrolysis of ethyl acetate

Decomposition of N₂O

Decomposition of gaseous ammonia on a hot platinum surface

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4 / 10

4. The value of rate constant of a pseudo first order reaction ____________.

depends on the concentration of reactants present in small amount.

depends on the concentration of reactants present in excess.

is independent of the concentration of reactants.

depends only on temperature.

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5 / 10

5. The rate constant of first order reaction is 3 × 10^–6 per second. The initial concentration is 0.10 M. The initial rate is:

3 × 10^–7 mol/litre/sec

3 × 10^–8 mol/litre/sec

3 × 10^–5 mol/litre/sec

3 × 10^–8 mol/litre/sec

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6 / 10

6. The rate law for the single- step reaction 2A + B → 2C, is given by:

rate = k [A].[B]

rate = k [A]2.[B]

rate = k [2A].[B]

rate = k [A]2.[B]o

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7 / 10

7. The unit of rate of reaction is

mole/dm³

mole/pound

mole/dm³ sec

mole/cm³

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8 / 10

8. Velocity constant k of a reaction is affected by

change in the concentration of the reactant

change of temperature

change in the concentration of the product

None of the above

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9 / 10

9. The rate constant for a first order reaction whose half-life, is 480 seconds is :

2.88 × 10–3 sec–1

2.72 × 10–3 sec–1

1.44 × 10 ^–3 sec^–1

1.44 sec^–1

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10 / 10

10. Instantaneous rate of a chemical reaction is

rate of reaction in the beginning

rate of reaction at the end

rate of reaction at a given instant

rate of reaction between two specific time intervals

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? Note: This quiz is entirely free, and all students of Class 12th Chemistry are invited to participate. Make the most of this opportunity to strengthen your understanding of Chemical Kinetics and excel in your exams!

Chapter wise quiz of XII class chemistry

In this quiz, you will have the opportunity to showcase your understanding of the following key concepts:

1️⃣ Reaction Rates: Understanding how fast or slow a chemical reaction takes place and factors affecting it.

2️⃣ Rate Laws: Determining the mathematical relationship between the concentration of reactants and the rate of a reaction.

3️⃣ Integrated Rate Laws: Exploring the concentration changes of reactants over time.

4️⃣ Activation Energy: Unraveling the energy barrier that reactants must overcome to initiate a chemical reaction.

5️⃣ Arrhenius Equation: Understanding the relationship between temperature, rate constant, and activation energy.

6️⃣ Catalysis: Examining the impact of catalysts on reaction rates and mechanisms.

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