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Q. No.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
I.
Rate constant
B.
Rate of reaction for zero-order reaction is equal to
II.
Rate law
C.
Units of rate constant for zero-order reaction is same as that of
III.
Order of slowest step
D.
Order of a complex reaction is determined by
IV.
Rate of reaction
Codes:
A
B
C
D
1.
III
IV
I
II
2.
I
II
III
IV
3.
II
I
IV
III
4.
IV
I
III
II
(Concepts Related to Chemical Kinetics)
(Related Terms)
Codes:
Subtopic: Order, Molecularity and Mechanism |
86%
Level 1: 80%+
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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 |
61%
Level 2: 60%+
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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 |
79%
Level 2: 60%+
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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 |
79%
Level 2: 60%+
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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 |
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: Arrhenius Equation |
Level 4: Below 35%
Hints
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%
Level 2: 60%+
Hints
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%
Level 1: 80%+
Hints
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 |
76%
Level 2: 60%+
Hints
Links
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%
Level 1: 80%+
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