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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct graphical representation of relation between ln k and 1/T is:
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct representation of an exothermic reaction is:
1. | 2. | ||
3. | 4. | Both 1 and 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology