- 1(current)
Q. No.What is the purpose of using Mohr's salt in titration experiments?
1. To standardize the solution
2. To act as an indicator
3. To determine the volume of the analyte
4. To adjust the pH of the solution
1. To standardize the solution
2. To act as an indicator
3. To determine the volume of the analyte
4. To adjust the pH of the solution
Subtopic: Â The chemistry involved in the titrimetric exercises |
Level 3: 35%-60%
Hints
Which indicator is commonly used in the titration of Mohr's salt with potassium permanganate?
| 1. | Phenolphthalein | 2. | Methyl orange |
| 3. | Starch | 4. | None of the above |
Subtopic: Â The chemistry involved in the titrimetric exercises |
Level 3: 35%-60%
Hints
In the titration of oxalic acid with \(\mathrm{KMnO_4}\), what is the role of oxalic acid?
1. Oxidizing agent
2. Reducing agent
3. Indicator
4. Catalyst
1. Oxidizing agent
2. Reducing agent
3. Indicator
4. Catalyst
Subtopic: Â The chemistry involved in the titrimetric exercises |
 71%
Level 2: 60%+
Hints
Which color change is observed at the endpoint when oxalic acid is titrated with potassium permanganate?
| 1. | From pink to colourless | 2. | From pink to yellow |
| 3. | From pink to brown | 4. | From pink to purple |
Subtopic: Â The chemistry involved in the titrimetric exercises |
Level 4: Below 35%
Hints
How can the equivalence point be determined in the titration of oxalic acid with \(\mathrm{KMnO_4}\)?
1. By using a pH indicator
2. By the appearance of a precipitate
3. By monitoring a sudden change in pH
4. By measuring the temperature change
1. By using a pH indicator
2. By the appearance of a precipitate
3. By monitoring a sudden change in pH
4. By measuring the temperature change
Subtopic: Â The chemistry involved in the titrimetric exercises |
 50%
Level 3: 35%-60%
Hints
What is the chemical formula of Mohr's salt?
1. \(\mathrm{(NH_4)_2SO_4}\)
2. \(\mathrm{(NH_4)_2Fe(SO_4)_4.6H_2O}\)
3. \(\mathrm{FeSO_4.7H_2O}\)
4. \(\mathrm{FeSO_4(NH_4)_2(SO_4).6H_2O}\)
1. \(\mathrm{(NH_4)_2SO_4}\)
2. \(\mathrm{(NH_4)_2Fe(SO_4)_4.6H_2O}\)
3. \(\mathrm{FeSO_4.7H_2O}\)
4. \(\mathrm{FeSO_4(NH_4)_2(SO_4).6H_2O}\)
Subtopic: Â The chemistry involved in the titrimetric exercises |
 78%
Level 2: 60%+
Hints
Which of the following is not involved in the titration of Mohr's salt (\(\mathrm{FeSO}_4\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}\)) with potassium permanganate (\(\mathrm{KMnO}_4\))?
| 1. | Oxidation | 2. | Reduction |
| 3. | Precipitation | 4. | Acid-base reaction |
Subtopic: Â The chemistry involved in the titrimetric exercises |
Level 3: 35%-60%
Hints
Which acid is typically used for the preparation of a standard solution of KMnO4?
| 1. | Sulphuric acid | 2. | Hydrochloric acid |
| 3. | Phosphoric acid | 4. | Oxalic acid |
Subtopic: Â The chemistry involved in the titrimetric exercises |
 50%
Level 3: 35%-60%
Hints
How is the volume of \(\mathrm{KMnO_4}\) solution determined during titration?
1. By measuring the mass of \(\mathrm{KMnO_4}\) crystals used
2. By monitoring the colour change of the solution
3. By titrating with a standard solution of oxalic acid
4. By measuring the pH of the solution
1. By measuring the mass of \(\mathrm{KMnO_4}\) crystals used
2. By monitoring the colour change of the solution
3. By titrating with a standard solution of oxalic acid
4. By measuring the pH of the solution
Subtopic: Â The chemistry involved in the titrimetric exercises |
Level 3: 35%-60%
Hints
What is the color change observed during the titration of Mohr's salt with potassium permanganate?
1. From blue to colourless
2. From pink to colourless
3. From green to brown
4. From yellow to pink
1. From blue to colourless
2. From pink to colourless
3. From green to brown
4. From yellow to pink
Subtopic: Â The chemistry involved in the titrimetric exercises |
Level 4: Below 35%
Hints
- 1(current)
Q. No.
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