Q. No.In an acidic medium, 10 mL of 0.25 M oxalic acid is titrated with \(KMnO_4\) solution. If the volume of \(KMnO_4\) solution required to reach end point is 10 mL, the strength of the \(KMnO_4\) solution is:
| 1. | 0.15 M |
| 2. | 0.10 M |
| 3. | 0.20 M |
| 4. | 0.25 M |
Subtopic: Acids & Bases - Definitions & Classification | Salt Hydrolysis & Titration |
52%
Level 3: 35%-60%
NEET - 2026
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Amongst the given option which of the following molecules/ion acts as a Lewis acid?
1. \(\text{OH}^- \)
2. \(\text{NH}_3 \)
3. \(\text H_2 \text O \)
4. \(\text{BF}_3 \)
1. \(\text{OH}^- \)
2. \(\text{NH}_3 \)
3. \(\text H_2 \text O \)
4. \(\text{BF}_3 \)
Subtopic: Acids & Bases - Definitions & Classification |
77%
Level 2: 60%+
NEET - 2023
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The conjugate bases of Bronsted acids H2O and HF are respectively:
1. H3O+ and H2F+, respectively.
2. OH– and H2F+, respectively.
3. H3O+ and F–, respectively.
4. OH– and F–, respectively.
Subtopic: Acids & Bases - Definitions & Classification |
76%
Level 2: 60%+
NEET - 2019
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Which of the following cannot act both as a Bronsted acid and as a Bronsted base?
| 1. | \(\mathrm{H C O_{3}^{-}}\) | 2. | \(\mathrm{NH_3}\) |
| 3. | \(\mathrm{HCl}\) | 4. | \(\mathrm{H S O_{4}^{-}}\) |
Subtopic: Acids & Bases - Definitions & Classification |
72%
Level 2: 60%+
NEET - 2019
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Boric acid is an acid because its molecule:
| 1. | contains replaceable H+ ions |
| 2. | gives up a proton |
| 3. | accepts OH– from water, releasing a proton into the solution |
| 4. | combines with protons from water molecules |
Subtopic: Acids & Bases - Definitions & Classification |
70%
Level 2: 60%+
NEET - 2016
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Subtopic: Acids & Bases - Definitions & Classification |
68%
Level 2: 60%+
NEET - 2016
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Among the following, the correct order of acidity is:
1. HClO < HClO2 < HClO3 < HClO4
2. HClO2 < HClO < HClO3 < HClO4
3. HClO4 < HClO2 < HClO < HClO3
4. HClO3 < HClO4 < HClO2 < HClO
Subtopic: Acids & Bases - Definitions & Classification |
88%
Level 1: 80%+
NEET - 2016
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Subtopic: Acids & Bases - Definitions & Classification |
76%
Level 2: 60%+
AIPMT - 2013
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Subtopic: Acids & Bases - Definitions & Classification |
83%
Level 1: 80%+
AIPMT - 2010
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The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence:
1.
2.
3.
4.
Subtopic: Acids & Bases - Definitions & Classification |
66%
Level 2: 60%+
AIPMT - 2010
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