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Q. No.When bismuth chloride is poured into a large volume of water, the formula for the white precipitate produced is:
1. \(Bi(OH)_3\)
2. \(Bi_2O_3 \)
3. \(BiOCl \)
4. \(Bi_2OCl \)
1. \(Bi(OH)_3\)
2. \(Bi_2O_3 \)
3. \(BiOCl \)
4. \(Bi_2OCl \)
Subtopic: Detection of Cations |
From NCERT
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NEET 2025 - Target Batch
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During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of Fe2+ ion?
1. Concentrated sulphuric acid
2. Dilute nitric acid
3. Dilute sulphuric acid
4. Dilute hydrochloric acid
1. Concentrated sulphuric acid
2. Dilute nitric acid
3. Dilute sulphuric acid
4. Dilute hydrochloric acid
Subtopic: Preparation of the Organic and Inorganic compounds |
53%
From NCERT
NEET - 2024
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Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from I to VI.
A. Al3+
B. Cu2+
C. Ba2+
D. Co2+
E. Mg2+
Choose the correct answer from the options given below
1. B, C, A, D, E
2. E, C, D, B, A
3. E, A, B, C, D
4. B, A, D, C, E
A. Al3+
B. Cu2+
C. Ba2+
D. Co2+
E. Mg2+
Choose the correct answer from the options given below
1. B, C, A, D, E
2. E, C, D, B, A
3. E, A, B, C, D
4. B, A, D, C, E
Subtopic: Detection of Cations |
52%
NEET - 2024
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In salt analysis, group V radicals \(\mathrm{(Ba^{2+}, Ca^{2+} ~and ~Sr^{2+} )}\) are precipitated as their carbonates by adding solid \(\mathrm{NH_4Cl}\) and excess of \(\mathrm{NH_4OH}\) solution followed by solid \(\mathrm{(NH_4)_2CO_3}\)
Choose the correct reagent used for the confirmation of \(\mathrm{Ca^{2+}}\) ion from the following:
Choose the correct reagent used for the confirmation of \(\mathrm{Ca^{2+}}\) ion from the following:
| 1. | Ammonium sulphate | 2. | Potassium chromate |
| 3. | Ammonium oxalate | 4. | Ammonium nitrate |
Subtopic: Detection of Cations |
55%
NEET - 2024
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In salt analyses, \(\mathrm{Cl^-,Br^-}\) and \(\mathrm{I^-}\) are identified by adding dilute \(\mathrm{HNO_3}\) followed by \(\mathrm{AgNO_3}\) solution to the salt solution.
Which of the following statements are correct?
Choose the correct answer from the options given below:
Which of the following statements are correct?
| A. | \(\mathrm{Cl^-}\) gives pale yellow precipitate. |
| B. | \(\mathrm{Br^-}\) gives pale yellow precipitate which is partially soluble in \(\mathrm{NH_4OH.}\) |
| C. | \(\mathrm{I^-}\) gives yellow precipitate which is insoluble in \(\mathrm{NH_4OH.}\) |
| D. | \(\mathrm{Cl^-}\) gives white precipitate which is insoluble in \(\mathrm{NH_4OH.}\) |
| E. | \(\mathrm{I^-}\) gives purple violet gas. |
| 1. | B and C only | 2. | A and B only |
| 3. | A and E only | 4. | D and E only |
Subtopic: Detection of Anions |
60%
NEET - 2024
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Which indicator is used and what is the color change at the endpoint in oxalic acid-sodium hydroxide titration?
1. Phenolphthalein, pink to yellow
2. Alkaline \(\mathrm{KMnO_4}\), colourless to pink
3. Phenolphthalein, colourless to pink
4. Methyl orange, yellow to pinkish red colour
Subtopic: The chemistry involved in the titrimetric exercises |
53%
NEET - 2024
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Match the items given in List-I with those in List-II and select the correct option given below:
Options:
1. A-IV, B-II, C-III, D-I
2. A-II, B-IV, C-III, D-I
3. A-II, B-III, C-IV, D-I
4. A-III, B-IV, C-II, D-I
| List-I (Test/reagent) |
List-II (Radical identified) |
||
| A. | Lake Test | I. | \( \mathrm{NO}_3^{-} \) |
| B. | Nessler's Reagent | II. | \(\mathrm{Fe}^{3+} \) |
| C. | Potassium sulpho cyanide | III. | \( \mathrm{Al}^{3+}\) |
| D. | Brown Ring Test | IV. | \(\mathrm{NH}_4^{+}\) |
1. A-IV, B-II, C-III, D-I
2. A-II, B-IV, C-III, D-I
3. A-II, B-III, C-IV, D-I
4. A-III, B-IV, C-II, D-I
Subtopic: Detection of Cations |
56%
NEET - 2024
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NEET 2025 - Target Batch
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Match List-I with List-II:
Choose the correct answer from the options given below:
1. A-II, B-III, C-IV, D-I
2. A-IV, B-III, C-II, D-I
3. A-I, B-II, C-III, D-IV
4. A-II, B-III, C-I, D-IV
| (List-I) Solid salt treated with dil. \(\mathrm{{H}_2 {SO}_4}\) |
(List-II ) Anion detected |
||
| A. | Effervescence of colourless gas | I. | \( \mathrm{NO}_2^{-} \) |
| B. | Gas with smell of rotten egg | II. | \(\mathrm{CO}_3^{2-} \) |
| C. | Gas with pungent smell | III. | \(\mathrm{S}^{2-}\) |
| D. | Brown fumes | IV. | \(\mathrm{SO}_3^{2-}\) |
1. A-II, B-III, C-IV, D-I
2. A-IV, B-III, C-II, D-I
3. A-I, B-II, C-III, D-IV
4. A-II, B-III, C-I, D-IV
Subtopic: Detection of Anions |
74%
NEET - 2024
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NEET 2025 - Target Batch
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\(\mathrm{NH}_4 \mathrm{SCN} \) can be used to test:
1. \(\mathrm{Fe}^{3+} \)
2. \(\mathrm{Co}^{2+}, \mathrm{Cu}^{2+}\)
3. \(\mathrm{Fe}^{3+}, \mathrm{Cu}^{2+}\)
4. All of the above
Subtopic: Detection of Cations |
53%
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Copper wire test for halogens is known as:
1. Duma's Test
2. Beilstein's Test
3. Lasssigne's Test
4. Liebg's Test
1. Duma's Test
2. Beilstein's Test
3. Lasssigne's Test
4. Liebg's Test
Subtopic: Detection of Anions |
55%
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