Q. No. 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)
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)
Identify the correct statement(s) in relation to the following reaction.
(a) Zinc is acting as an oxidant
(b) Chlorine is acting as a reductant
(c) Hydrogen ion is acting as an oxidant
(d) Zinc is acting as a reductant
The correct choice among the above is -
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following electrodes will act as anodes, when connected to Standard Hydrogen Electrode?
\(\begin{array}{rlr}\text { (a) } & \mathrm{Al}^{3+} / \mathrm{Al} & \mathrm{E}_{RP}^{o}=-1.66 \\\text { (b) } & \mathrm{Fe}^{2+} / \mathrm{Fe} & \mathrm{E}_{RP}^{o}=-0.44 \\\text { (c) } & \mathrm{Cu}^{2+} / \mathrm{Cu} & \mathrm{E}_{RP}^{o}=+0.34 \\\text { (d) } & \mathrm2 \mathrm{~F}^{-}(\mathrm{aq}) / {F}_{2}(\mathrm{~g}) & \mathrm{E}_{RP}^{o}=+2.87\end{array}\)The correct choice among the above is -
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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
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. |
Given below are two statements:
| Assertion (A): | Among halogens, fluorine is the best oxidant. |
| Reason (R): | Fluorine is the most electronegative atom. |
| 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 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 |
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 |
The largest oxidation number exhibited by an element depends on its electronic configuration. With which of the following electronic configurations will the element exhibit the largest oxidation number?
1. 3d14s2
2. 3d34s2
3. 3d54s1
4. 3d54s2
© 2024 GoodEd Technologies Pvt. Ltd.