- 1(current)
Q. No.| Assertion (A): | In the presentation \( \mathrm{E}_{\mathrm{Fe}^{3+}}^{\ominus} /_{ \mathrm{Fe}^{2+}}\) \( \text { and } \mathrm{E}_{\mathrm{Cu}^{2+}}^{\ominus} / _{\mathrm{Cu}^{\prime}} \mathrm{Fe}^{3+} / \mathrm{Fe}^{2+} \) and\(\text { } \mathrm{Cu}^{2+} / \mathrm{Cu}\) are reodox couples |
| Reason (R): | A redox couple is the combination of the oxidised and reduced forms of a substance involved in an oxidation or reduction half cell. |
| 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. |
Match Column I with Column II for the oxidation states of the central atoms.
|
Column I |
Column II |
|
A. |
1. +3 |
|
B. |
2. +4 |
|
C. |
3. +5 |
|
D. |
4. +6 |
|
5. +7 |
Codes
| Options: | A | B | C | D |
| 1. | 4 | 5 | 3 | 1 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Match the items in Column I with relevant items in Column II.
|
Column I |
Column II |
|
A. Ions having a positive charge |
1. +7 |
|
B. The sum of oxidation number of all atoms in a neutral molecule |
2. -1 |
|
C. Oxidation number of hydrogen ion. (H+) |
3. +1 |
|
D. Oxidation number of fluorine in NaF |
4. 0 |
|
E. Ions having a negative charge |
5. Cation |
|
6. Anion |
Codes
| Options: | A | B | C | D | E |
| 1. | 5 | 4 | 3 | 2 | 6 |
| 2. | 1 | 2 | 3 | 5 | 4 |
| 3. | 5 | 4 | 3 | 2 | 1 |
| 4. | 4 | 5 | 3 | 2 | 1 |
Which of the following statement(s) is/are not true about the following decomposition reaction?
| a. | Potassium is undergoing oxidation |
| b. | Chlorine is undergoing oxidation |
| c. | Oxygen is reduced |
| d. | None of the species are undergoing oxidation or reduction |
The correct choice among the above is -
1. (a, b, d)
2. (b, c, d)
3. (b, d, a)
4. None of the above
Atom(s) with outer most electronic configuration among the following that can show variable oxidation is
(a) 3s1
(b) 3d34s2
(c) 3d24s2
(d) 3s23p3
1. (a, b, c)
2. (b, c, d)
3. (a, b, d)
4. (a, c, d)
- 1(current)
Q. No.
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