Q. No.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: Â Arrhenius Equation |
 73%
Level 2: 60%+
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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: Â Arrhenius Equation |
 69%
Level 2: 60%+
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Links
Subtopic: Â Arrhenius Equation |
 79%
Level 2: 60%+
Hints
Links
Subtopic: Â Arrhenius Equation |
 85%
Level 1: 80%+
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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: Â Arrhenius Equation |
Level 3: 35%-60%
Hints
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: Â Arrhenius Equation |
 62%
Level 2: 60%+
Hints
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: Â Arrhenius Equation |
 79%
Level 2: 60%+
Hints
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: Â Arrhenius Equation |
 86%
Level 1: 80%+
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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: Â Arrhenius Equation |
Level 4: Below 35%
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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: Â Arrhenius Equation |
 85%
Level 1: 80%+
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