- 1(current)
Q. No.The role of a catalyst is to change:
1. Gibbs energy of the reaction
2. Enthalpy of reaction
3. The activation energy of the reaction
4. Equilibrium constant
Subtopic: Â Catalyst |
 94%
From NCERT
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In the presence of a catalyst, the heat evolved or absorbed during the reaction:
1. Increases.
2. Decreases.
3. Remains unchanged.
4. May increase or decrease.
Subtopic: Â Catalyst |
 72%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
An incorrect statement regarding the catalyst is:
| 1. | It catalyzes the forward and backward reactions to the same extent. |
| 2. | It alters gibbs free energy of the reaction. |
| 3. | It is a substance that does not change the equilibrium constant of a reaction. |
| 4. | It provides an alternate mechanism by reducing activation energy between reactants and products. |
Subtopic: Â Catalyst |
 78%
From NCERT
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The correct statements among the following is:
| a. | Catalyst provides an alternative pathway to the reaction mechanism |
| b. | Catalyst raises the activation energy |
| c. | A catalyst lowers the activation energy |
| d. | Catalyst alters enthalpy change of the reaction |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Subtopic: Â Catalyst |
 84%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Match the statements in Column I and Column II :
| Column I | Column II | ||
| A. | Catalyst alters the rate of reaction | 1. | Proper orientation is not there always |
| B. | 2. | By lowering the activation energy | |
| C. | Energetically favorable reactions are sometimes slow | 3. | Total probability is one |
| D. | Area under the Maxwell-Boltzmann curve is constant | 4. | Refers to the fraction of molecules with energy equal to or greater than the activation energy |
Codes
| A | B | C | D | |
| 1. | 2 | 4 | 1 | 3 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 3 | 4 | 1 | 2 |
Subtopic: Â Catalyst |
 91%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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: Â Catalyst |
 76%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
- 1(current)
Q. No.
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