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Q. No.Given below are two statements:
Assertion (A):
The solubilities of two sparingly soluble salts, Ni(OH)2 and AgCN with a Ksp of \(4 \times 10^{-8} ~and~1 \times 10^{-10}~mol/L\)respectively.
Reason (R):
AgCN is less soluble than Ni(OH)2
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.
| Assertion (A): | The solubilities of two sparingly soluble salts, Ni(OH)2 and AgCN with a Ksp of \(4 \times 10^{-8} ~and~1 \times 10^{-10}~mol/L\)respectively. |
| Reason (R): | AgCN is less soluble than Ni(OH)2 |
| 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: Solubility Product |
52%
Level 3: 35%-60%
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A student is performing a titration experiment. He starts with a 20 ml solution of 0.1 M acetic acid and titrates it with a 0.1 M NaOH solution. If the student has added 16 ml of the NaOH solution, what is the pH of the resulting solution?
[Given: pKa = 4.75]
1. 5.05
2. 4.15
3. 5.35
4. 4.75
[Given: pKa = 4.75]
1. 5.05
2. 4.15
3. 5.35
4. 4.75
Subtopic: pH calculation |
63%
Level 2: 60%+
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Given below are two statements:
| 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 |
Level 3: 35%-60%
Hints
| Assertion (A): | For the reaction: H2(g) + I2(g) \(\rightleftharpoons\) 2HI(g), if the volume of the vessel is reduced to half of its original volume, the equilibrium concentration of all gases will be doubled. |
| Reason (R): | According to Le-Chatelier's principle, reaction shifts in a direction that tends to minimize the effect of stress. |
| 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: Le Chatelier's principle |
Level 3: 35%-60%
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Aqueous solution of which of the following salts is not a neutral solution?
| 1. | \(NaCl\) | 2. | \(CH_3COONH_4\) |
| 3. | \(Na_2SO_4 \) | 4. | None of these |
Subtopic: Buffer |
Level 3: 35%-60%
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What can be the active mass of 5.6 L \(O_2\) gas at NTP ?
1. 0.25 Mol/L
2. \({1 \over 22.4 } Mol /L\)
3. 0.175 Mol/L
4. \({ 1 \over 5.6}~ Mol / L\)
1. 0.25 Mol/L
2. \({1 \over 22.4 } Mol /L\)
3. 0.175 Mol/L
4. \({ 1 \over 5.6}~ Mol / L\)
Subtopic: Introduction To Equilibrium |
Level 3: 35%-60%
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If Ksp of KI is 1.45 × 10−6 in propanol at 25°C, what would Ksp of KI be in propane at the same temperature?
1. 1.84
2. 2.90 × 10−3
3. 1.81 × 10−6
4. 7.56 × 10−23
1. 1.84
2. 2.90 × 10−3
3. 1.81 × 10−6
4. 7.56 × 10−23
Subtopic: Solubility Product |
Level 3: 35%-60%
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Which is the correct expression for pKb in the following reaction?
\(\mathrm{H}_2 \mathrm{O}+\mathrm{NH}_3 \rightleftharpoons {\mathrm{NH}_4^{+}} \ + \mathrm{HO}^{-}\)| 1. | \(pK_{b} \ = \ log\frac{[H_{2}O][NH_{3}]}{[NH_{4}^{+}][OH^{-}]}\) |
| 2. | \(\)\(pK_{b} \ = \ log\frac{[OH^{-}][NH_{4}^{+}]}{[NH_{3}][H_{2}O]}\) |
| 3. | \(pK_{b} \ = -\ log\frac{[H_{2}O][NH_{3}]}{[NH_{4}^{+}][OH^{-}]}\) |
| 4. | \(pK_{b} \ = \ log\frac{[NH_{3}][NH_{4}^{+}]}{[OH^{-}][H_2O]}\) |
Subtopic: Ionisation Constant of Acid, Base & Salt |
Level 3: 35%-60%
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What can be the active mass of CaCO3 if 10 grams of CaCO3 are taken in a one-liter container?
[Given: Molecular weight of CaCO3 = 100]
1. 0.1
2. 1
3. 0.01
4. 10
Subtopic: Le Chatelier's principle |
55%
Level 3: 35%-60%
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The pH of 10-6 M CH3COOH will be:
(Given: ka of CH3COOH = 1.8 \(\times\) 10-5 & log 4.24 =0.63)
1. 5.37
2. 7.0
3. Slightly more than 6
4. 6.95
Subtopic: pH calculation |
Level 3: 35%-60%
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