- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | The decomposition of hydrogen peroxide to form water and oxygen is an example of a disproportionation reaction. |
| Reason (R): | The oxygen of peroxide is in –1 oxidation state and it is converted to zero oxidation state in O2 and –2 oxidation state in H2O. |
| 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: Redox Titration & Type of Redox |
90%
Level 1: 80%+
Hints
Given below are two statements:
| Assertion (A): | In the reaction between potassium permanganate and potassium iodide, permanganate ions act as an oxidising agent. |
| Reason (R): | The oxidation state of manganese changes from +2 to +7 during the reaction. |
| 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: Redox Titration & Type of Redox |
68%
Level 2: 60%+
Hints
Identify the correct statements regarding the given reaction:
| a. | Phosphorus undergoes reduction only. |
| b. | Phosphorus undergoes oxidation only. |
| c. | Phosphorus undergoes oxidation as well as reduction. |
| d. | Hydrogen undergoes neither oxidation nor reduction. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Subtopic: Oxidizing & Reducing Agents | Redox Titration & Type of Redox |
87%
Level 1: 80%+
Hints
Which two changes occur in the oxidation number of chlorine when chlorine gas is passed through hot NaOH solution?
a. 0 to +5
b. 0 to +3
c. 0 to -1
d. 0 to +1
Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Subtopic: Redox Titration & Type of Redox |
62%
Level 2: 60%+
Hints
In which of the following reactions conc. H2SO4 is used as an oxidising reagent?
| a. | CaF2 + H2SO4 → CaSO4 + 2 HF |
| 2. | 2HI + H2SO4 → I2 + SO2 + 2H2O |
| 3. | Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O |
| 4. | NaCl + H2SO4 → NaHSO4 + HCl |
Choose the correct option:
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, d) |
Subtopic: Redox Titration & Type of Redox |
80%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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