Consider the reaction AB. The concentration of both the reactant and the product varies exponentially with time.
The graph that accurately depicts how reactant and product concentrations change with time is:
1.
2.
3.
4.
The graph that accurately depicts how reactant and product concentrations change with time is:
Subtopic: Definition, Rate Constant, Rate Law |
84%
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The graphs that represent a zero-order reaction are:
| (a) |  |
(b) |  |
| (c) |  |
(d) |  |
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, d) |
Subtopic: Order, Molecularity and Mechanism |
From NCERT
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The correct graphical representation of first-order reaction is:
| (a) |  |
(b) |  |
| (c) |  |
(d) |  |
| 1. | (a) and (b) | 2. | (b) and (c) |
| 3. | (c) and (d) | 4. | (a) and (d) |
Subtopic: First Order Reaction Kinetics |
83%
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Match the graph given in Column I with the order of reaction given in Column II.
More than one item in Column I may be linked to the same item in Column II:
| Column I | Column II | ||
| (i) |  |
(a) | 1st order |
| (ii) |  |
(b) | Zero order |
| (iii) |  |
||
| (iv) |  |
||
| (i) | (ii) | (iii) | (iv) | |
| 1. | (a) | (b) | (a) | (b) |
| 2. | (a) | (b) | (b) | (a) |
| 3. | (a) | (a) | (b) | (b) |
| 4. | (b) | (b) | (a) | (a) |
Subtopic: Order, Molecularity and Mechanism |
75%
From NCERT
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Match the statements in Column I and Column II :
|
Column I
(Thermodynamic/Kinetic Principle)
|
Column II
(Impact on Reaction Dynamics)
|
||
| A. | Catalyst alters the rate of reaction | 1. | Proper orientation is not always there |
| B. | 2. | By lowering the activation energy | |
| C. | Energetically favorable reactions are sometimes slow | 3. | Total probability is one |
| D. | The 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: Catalyst |
91%
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Match the items in Column I with Column II:
| Column I | Column II |
| A. Diamond to graphite conversion | 1. Short interval of time |
| B. Instantaneous rate | 2. Ordinarily rate of conversion is imperceptible |
| C. Average rate | 3. Long duration of time |
Codes:
| A | B | C | |
| 1. | 2 | 1 | 3 |
| 2. | 1 | 2 | 3 |
| 3. | 3 | 2 | 1 |
| 4. | 1 | 3 | 2 |
Subtopic: Definition, Rate Constant, Rate Law |
74%
From NCERT
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Match the items of Column I with items of Column II
| Column I (Concepts Related to Chemical Kinetics) |
Column II (Related Terms) |
||
| A. | Mathematical expression for the rate of reaction | 1. | Rate constant |
| B. | Rate of reaction for zero-order reaction is equal to | 2. | Rate law |
| C. | Units of rate constant for zero-order reaction is same as that of | 3. | Order of slowest step |
| D. | Order of a complex reaction is determined by | 4. | Rate of reaction |
Codes:
| A | B | C | D | |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 2 | 1 | 4 | 3 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Order, Molecularity and Mechanism |
86%
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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 |
60%
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 |
78%
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 |
85%
From NCERT
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