Select the correct option based on statements below:

Assertion (A): The rate constant determined from the Arrhenius equation is fairly accurate for simple as well as complex molecules.
Reason (R): Reactant molecules undergo chemical change irrespective of their orientation during a collision.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Arrhenius Equation |
 59%
From NCERT
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Select the correct option based on statements below:

Assertion (A): All collisions of reactant molecules lead to product formation.
Reason (R): Only those collisions in which molecules have the correct orientation and sufficient kinetic energy lead to the compound formation.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Arrhenius Equation |
 83%
From NCERT
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Select the correct option based on statements below:

Assertion (A): The enthalpy of reaction remains constant in the presence of a catalyst.
Reason (R): A catalyst participating in the reaction forms a different activated complex and lowers down the activation energy but the difference in energy of the reactant and the product remains the same.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Catalyst |
 76%
From NCERT
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Select the correct option based on statements below:
Assertion (A): Order and molecularity are the same.
Reason (R): Order is determined experimentally, and molecularity is the sum of the stoichiometric coefficient of the rate-determining the elementary step.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Order, Molecularity and Mechanism |
 76%
From NCERT
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Select the correct option based on statements below:

Assertion (A): The order of the reaction can be zero or fractional.
Reason (R): We cannot determine order from the balanced chemical equation.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.

Subtopic:  Order, Molecularity and Mechanism |
 58%
From NCERT
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Select the correct option based on statements below:

Assertion (A): The overall order of reaction is the sum of the power of all the reactants in the rate expression.
Reason (R): There are many higher-order reactions.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Order, Molecularity and Mechanism |
From NCERT
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Select the correct option based on statements below:

Assertion (A): Base catalyzed hydrolysis of ethyl acetate is a first-order reversible reaction.
Reason (R): The order of reaction always depends on the stoichiometry of the reaction.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Order, Molecularity and Mechanism |
 53%
From NCERT
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Select the correct option based on statements below:

Assertion (A): At very high temperatures (approaches to infinity), the rate constant becomes equal to the collision frequency.
Reason (R): The collision in which molecules collide with proper orientation is called an ineffective collision.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Arrhenius Equation |
 71%
From NCERT
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Select the correct option based on statements below:

Assertion (A): For elementary reactions, the law of mass action and the rate of law expression are generally the same.
Reason (R): The molecularity of an elementary reaction is always one.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Order, Molecularity and Mechanism |
 64%
From NCERT
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For the reaction, 2A → B, rates= k[A]2. If the concentration of reactant is doubled, then the:

(a) rate of reaction will be doubled.
(b) rate constant will remain unchanged, however rate of reaction is directly proportional to the rate constant.
(c) rate constant will change since the rate of reaction and rate constant are directly proportional to each other.
(d) rate of reaction will increase by four times.

Identify the set of correct statements & choose the correct answer from the options given below:

1. (a) and (c) only 2. (a) and (b) only
3. (b) and (d) only 4. (c) and (d) only
Subtopic:  Definition, Rate Constant, Rate Law |
 69%
From NCERT
NEET - 2022
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