Q. No.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 |
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For a reaction AB, enthalpy of reaction is and enthalpy of activation is . The correct potential energy profile for the reaction is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Arrhenius Equation |
72%
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During decomposition of an activated complex
| (a) | Energy is always released. |
| (b) | Energy is always absorbed. |
| (c) | Energy does not change. |
| (d) | Reactants may be formed. |
The correct choice among the given is -
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Subtopic: Arrhenius Equation |
68%
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Subtopic: Arrhenius Equation |
86%
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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%
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Rate constant (k) and temperature (T) are related as :
1. \(k \,\, = A\, \, e^{\frac{-E_{a}}{RT}}\)
2. \(k \,\, = A\, \, e^{\frac{RT}{-E_{a}}}\)
3. \(k \,\, = A\, \, e^{\frac{E_{a}}{RT}}\)
4. None of the above
1. \(k \,\, = A\, \, e^{\frac{-E_{a}}{RT}}\)
2. \(k \,\, = A\, \, e^{\frac{RT}{-E_{a}}}\)
3. \(k \,\, = A\, \, e^{\frac{E_{a}}{RT}}\)
4. None of the above
Subtopic: Arrhenius Equation |
92%
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 |
67%
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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%
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Subtopic: Arrhenius Equation |
77%
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The activation energy of a chemical reaction can be calculated by:
| 1. | Determining the rate constant at standard temperature. |
| 2. | Determining the rate constant at two temperatures. |
| 3. | Determining probability of collision. |
| 4. | Using the catalyst. |
Subtopic: Arrhenius Equation |
67%
From NCERT
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