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Q. No.

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%
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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): 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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The correct statements among the following regarding the Arrhenius equation is/are -

a. Rate of a reaction increases with an increase in temperature
b. Rate of a reaction increases with a decrease in activation energy
c. Rate constant decreases exponentially with an increase in temperature
d. Rate of reaction decreases with a decrease in activation energy


1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Arrhenius Equation |
 78%
From NCERT
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The correct statements among the following regarding Maxwell, Boltzmann distribution curve of energy is -

a. The area under the curve must not change with an increase in temperature.
b. The area under the curve increases with increase in temperature.
c. Area under the curve decreases with increase in temperature.
d. With an increase in temperature curve broadens and shifts to the right-hand side.


1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Arrhenius Equation |
 61%
From NCERT
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The correct statements among following about Maxwell, Boltzmann distribution of energy is -

a. The fraction of molecules with the most probable kinetic energy decreases at higher temperatures
b. The fraction of molecules with the most probable kinetic energy increases at higher temperatures
c. Most probable kinetic energy increases at higher temperatures
d. Most probable kinetic energy decreases at higher temperatures


1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)

Subtopic:  Arrhenius Equation |
From NCERT
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The correct statement based on the graph below is:

1. The activation energy of the forward reaction is E1 + E2 and the product is less stable than reactant.
2. The activation energy of the forward reaction is E1 + E2 and the product is more stable than the reactant.
3. The activation energy of both forward and backward reaction is E1 + E2 and reactant is more stable than the product.
4. The activation energy of the backward reaction is E1 and the product is more stable than reactant.
Subtopic:  Arrhenius Equation |
 65%
From NCERT
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The correct graphical representation of relation between ln k and 1/T is:

1.  2.
3. 4.
Subtopic:  Arrhenius Equation |
 75%
From NCERT
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The correct representation of an exothermic reaction is:

1.  2.
3. 4. Both 1 and 2
Subtopic:  Arrhenius Equation |
 85%
From NCERT
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The nature of the reaction represented in the following graph is:

1. Endothermic reaction
2. Exothermic reaction
3. Both endothermic and exothermic reactions are represented by the same graph.
4. None of the above
Subtopic:  Arrhenius Equation |
 83%
From NCERT
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