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Q. No.
Assertion (A):
When an inert gas is added to the equilibrium \(N_2 + O_2 \rightleftharpoons 2NO \) , at constant pressure, the equilibrium state doesn't change.
Reason (R):
At constant pressure, equilibrium is never affected by the addition of inert gas.
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: Le Chatelier's principle |
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Consider the given two statements:
| Assertion (A): |
A five times increase in pressure at equilibrium doesn't change Kp for the following reaction
\(N_2 (g) + 3H_2(g) \rightleftharpoons 2NH_3 (g) \) |
| Reason (R): | Kp depends on the degree of dissociation, not on total pressure. |
| 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: Kp, Kc & Factors Affecting them |
52%
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| Assertion (A): | Salts of strong acid and strong base do not undergo hydrolysis. |
| Reason (R): | These salts undergo hydration. |
| 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: Salt Hydrolysis & Titration |
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Given below are two statements:
| Assertion (A): | The ionization of NH4OH is suppressed by adding NH4Cl. |
| Reason (R): | Ionization is suppressed due to the common ion effect. |
| 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: Common Ion Effect |
91%
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| Assertion(A): | On increasing the pressure at the equilibrium Ice \(\rightleftharpoons\) Water, equilibrium shifts in the forward direction. |
| Reason(R): | The volume of water is less than the volume of ice |
| 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 and (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Le Chatelier's principle |
54%
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Assertion(A): BaCO3 is more soluble in HNO3 than in plain water.
Reason(R): Carbonate is a strong base and reacts with the H+ from the strong acid, causing the barium salt to dissociate.
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 and R is false.
4. A and R both are false.
Reason(R): Carbonate is a strong base and reacts with the H+ from the strong acid, causing the barium salt to dissociate.
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 and R is false.
4. A and R both are false.
Subtopic: Ionisation Constant of Acid, Base & Salt |
74%
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| Assertion (A): | The relative strength of acids can be determined by knowing the value of the dissociation constant. |
| Reason (R): | It provides the value of [H+] dissolved in the solution. |
| 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) and (R) both are false |
Subtopic: Acids & Bases - Definitions & Classification |
82%
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Assertion(A): On addition of NH4Cl to NH4OH solution, pH decreases but remains greater than 7
Reason(R): Addition of \(NH^+_4\) ion decreases ionization of NH4OH thus [OH-] is decreased, hence pH decreases.
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 and R is false.
4. A and R both are false.
Reason(R): Addition of \(NH^+_4\) ion decreases ionization of NH4OH thus [OH-] is decreased, hence pH decreases.
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 and R is false.
4. A and R both are false.
Subtopic: Common Ion Effect |
81%
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| Assertion (A): | A catalyst does not influence the value of the equilibrium constant. |
| Reason (R): | The catalyst influences the rate of both forward and backward reactions equally. |
| 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: Kp, Kc & Factors Affecting them |
50%
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| Assertion (A): | For an exothermic reaction, the value of Kc decreases on increasing the temperature. |
| Reason (R): | Rate constant for a backward reaction increases more than the increase in the rate constant for a forward reaction. |
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: Kp, Kc & Factors Affecting them |
73%
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