- 1(current)
Q. No.The most stable oxidized species among the following is:
\(E_{{\mathrm{Cr}_2 \mathrm{O}_7^2}/ \mathrm{Cr}^{3+}}^{o} =1.33 \mathrm{~V} ; E_{\mathrm{Cl}_2 / \mathrm{Cl}^{-}}^{o}=1.36 \mathrm{~V} \)
\( E_{\mathrm{MnO_{4}}^{-} / \mathrm{Mn}^{2+}}^{o}=1.51 \mathrm{~V} ; E_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{o}=-0.74 \mathrm{~V}\)
| 1. | Cr3+ | 2. | MnO4- |
| 3. | Cr2O72- | 4. | Mn2+ |
(Given: \(E_{Fe^{2+}/Fe^{+3}}^{o}\)=−0.77 V, \(E_{F_{2}/F^{-}}^{o}\)=2.87 V, \(E_{Cl_{2}/Cl^{-}}^{o}\) = 1.36 V, \(E_{O_{2}/H_{2}O}^{o}\) = 1.23V)
1. F2
2. Cl2
3. O2
4. All of the above
Use the data given above to find out the most stable ion in its reduced form.
| 1. | Cl- | 2. | Cr3+ |
| 3. | Cr | 4. | Mn2+ |
Match the items of Column I and Column II on the basis of data given below
| Column I | Column II | ||
| A | F2 | 1. | Metal is the strongest reducing agent |
| B | Li | 2. | Metal ion which is the weakest oxidising agent |
| C | Au3+ | 3. | Non-metal which is the best oxidising agent |
| D | Br– | 4. | Unreactive metal |
| E | Au | 5 | Anion that can be oxidised by Au3+ |
| F | Li+ | 6 | Anion which is the weakest reducing agent |
| G | F– | 7 | Metal ion which is an oxidising agent |
| Options: | A | B | C | D | E | F | G |
| 1. | 3 | 1 | 7 | 5 | 4 | 2 | 6 |
| 2. | 1 | 2 | 3 | 5 | 7 | 4 | 6 |
| 3. | 5 | 4 | 3 | 2 | 6 | 5 | 1 |
| 4. | 4 | 5 | 3 | 2 | 1 | 6 | 7 |
Given below are two statements:
| Assertion (A): | Cu is less reactive than hydrogen. |
| Reason (R): | E°Cu2+/ Cu is negative. |
| 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. |
Using the data given below find out the strongest oxidizing agent.
\(\mathrm{E_{Cr_{2} O_{7}^{2 -} / Cr^{3 +}}^{\ominus} = 1 . 33 V ; E_{Cl_{2} / Cl^{-}}^{\ominus} = 1 . 36 V \\ E_{Mn O_{4}^{-} / Mn^{2 +}}^{\ominus} = 1 . 51 V ; E_{Cr^{3 +} / Cr}^{\ominus} = - 0 . 74 V}\)
1. Cl–
2. Mn2+
3. MnO4–
4. Cr3+
The positive value of the standard electrode potential of Cu2+ / Cu indicates that-
| (a) | This redox couple is a stronger reducing agent than the H+ /H2 couple |
| (b) | This redox couple is a stronger oxidising agent than H+ /H2 |
| (c) | Cu can displace H2 from acid. |
| (d) | Cu cannot displace H2 from acid. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)
| Assertion (A): | Copper sulphate can be stored in a zinc vessel. |
| Reason (R): | Zinc is less reactive than copper. |
| 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. | Both (A) and (R) are False. |
The metals among the following that can be extracted electrolytically is -
| 1. | K | 2. | Na |
| 3. | Al | 4. | All of the above |
Based on the given data, identify the option that correctly lists the order of reducing power.
1. Cr3+ < Cl– < Mn2+ < Cr
2. Mn2+ < Cl– < Cr3+ < Cr
3. Cr3+ < Cl– < Cr2O72– < MnO4–
4. Mn2+ < Cr3+ < Cl– < Cr
- 1(current)
Q. No.
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