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Q. No.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.
Subtopic: Ionisation Constant of Acid, Base & Salt |
72%
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Assertion(A): On increasing the pressure at the equilibrium Ice \(\rightleftharpoons\) Water, equilibrium shifts in 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. A and R both are false.
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. A and R both are false.
Subtopic: Le Chatelier's principle |
53%
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Consider the following statements and choose the correct option.
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 and R is false.
4. A and R both are false.
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 and R is false.
4. A and R both are false.
Subtopic: Common Ion Effect |
90%
From NCERT
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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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Assertion(A): Five times increase in pressure on reaction.
\(N_2 (g) + 3H_2(g) \rightleftharpoons 2NH_3 (g) \)
at equilibrium doesn't change Kp.
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 and R is false.
4. A and R both are false.
\(N_2 (g) + 3H_2(g) \rightleftharpoons 2NH_3 (g) \)
at equilibrium doesn't change Kp.
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 and R is false.
4. A and R both are false.
Subtopic: Kp, Kc & Factors Affecting them |
51%
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| 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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| 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 |
81%
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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 |
79%
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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: Introduction To Equilibrium |
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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 |
71%
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