Select Chapter Topics:
Q. No.A certain weak acid has a dissociation constant of \(1.0 \times 10^{-4}\). The equilibrium constant for its reaction with a strong base will be:
1.
\(1.0 \times 10^{-4}\)
2.
\(1.0 \times 10^{-10} \)
3.
\( 1.0 \times 10^{10} \)
4.
\( 1.0 \times 10^{14} \)
Subtopic: Ionisation Constant of Acid, Base & Salt |
Level 4: Below 35%
Please attempt this question first.
Hints
Please attempt this question first.
Arrange the following solutions in the decreasing order of pOH:
1. (A) > (C) > (D) > (B)
2. (A) > (D) > (C) > (B)
3. (B) > (C) > (D) > (A)
4. (B) > (D) > (C) > (A)
| (A) | \(0.01 \mathrm{M} \ \mathrm{HCl} \) |
| (B) | \( 0.01 \mathrm{M}\ \mathrm{NaOH} \) |
| (C) | \( 0.01 \mathrm{M} \ \mathrm{CH}_3 \mathrm{COONa}\) |
| (D) | \(0.01 \mathrm{M} \ \mathrm{NaCl} \) |
1. (A) > (C) > (D) > (B)
2. (A) > (D) > (C) > (B)
3. (B) > (C) > (D) > (A)
4. (B) > (D) > (C) > (A)
Subtopic: pH calculation |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
| Assertion (A): | For every chemical reaction at equilibrium, standard Gibbs energy of the reaction is zero. |
| Reason (R): | At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy. |
| 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 |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
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%
Please attempt this question first.
Hints
Please attempt this question first.
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
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%
Please attempt this question first.
Hints
Please attempt this question first.
To what volume of \(10\) litre of \(0.5 \mathrm{M} ~\mathrm{CH}_3 \mathrm{COOH}\left(K_a=1.8 \times 10^{-5}\right)\) be diluted in order to double the hydroxide ion concentration?
1. \(20 \mathrm{~L}\)
2. \(30 \mathrm{~L}\)
3. \(40 \mathrm{~L}\)
4. None of the above
1. \(20 \mathrm{~L}\)
2. \(30 \mathrm{~L}\)
3. \(40 \mathrm{~L}\)
4. None of the above
Subtopic: Ionisation Constant of Acid, Base & Salt |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
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. |
Subtopic: Solubility Product |
52%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
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%+
Please attempt this question first.
Hints
Please attempt this question first.
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
Given below are two statements:
| 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%
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.