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Q. No.A cell is given as
\(\mathrm{M}(\mathrm{~s})\left|\mathrm{M}^{\mathrm{n}+}(\mathrm{aq}) \| \mathrm{M}^{+\mathrm{n}}(\mathrm{aq})\right| \mathrm{M}(\mathrm{~s})\)
For which of the following condition, \(E_{cell}\) is positive:
1. \(C_1 < C_2\) (If \(C_1\) is concentration at cathode)
2. \(C_2 < C_1\) (If \(C_1\) is concentration at anode)
3. \(C_1 < C_2\) (If \(C_2 \) is concentration at anode)
4. \(C_1 > C_2\) (If \(C_1\) is concentration at cathode)
\(\mathrm{M}(\mathrm{~s})\left|\mathrm{M}^{\mathrm{n}+}(\mathrm{aq}) \| \mathrm{M}^{+\mathrm{n}}(\mathrm{aq})\right| \mathrm{M}(\mathrm{~s})\)
For which of the following condition, \(E_{cell}\) is positive:
1. \(C_1 < C_2\) (If \(C_1\) is concentration at cathode)
2. \(C_2 < C_1\) (If \(C_1\) is concentration at anode)
3. \(C_1 < C_2\) (If \(C_2 \) is concentration at anode)
4. \(C_1 > C_2\) (If \(C_1\) is concentration at cathode)
Subtopic: Electrolytic & Electrochemical Cell |
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Level 2: 60%+
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Find out \(\mathrm{E}_{\text {cell }}^{\circ}\) of the given cell:
\(\begin{aligned} & \mathrm{M}\left|\mathrm{M}^{2+} \| \mathrm{X}^{2-}\right| \mathrm{X} \\ & \mathrm{E}_{\mathrm{M}^{2+} \mid \mathrm{M}}^{\circ}=0.34 \mathrm{~V} \\ & \mathrm{E}_{\mathrm{X} \mid \mathrm{X}^{2-}}^{\circ}=0.46 \mathrm{~V} \end{aligned}\)
1. \(0.80 \mathrm{~V}\)
2. \(0.12 \mathrm{~V}\)
3. \(-0.12 \mathrm{~V}\)
4. \(-0.80 \mathrm{~V}\)
\(\begin{aligned} & \mathrm{M}\left|\mathrm{M}^{2+} \| \mathrm{X}^{2-}\right| \mathrm{X} \\ & \mathrm{E}_{\mathrm{M}^{2+} \mid \mathrm{M}}^{\circ}=0.34 \mathrm{~V} \\ & \mathrm{E}_{\mathrm{X} \mid \mathrm{X}^{2-}}^{\circ}=0.46 \mathrm{~V} \end{aligned}\)
1. \(0.80 \mathrm{~V}\)
2. \(0.12 \mathrm{~V}\)
3. \(-0.12 \mathrm{~V}\)
4. \(-0.80 \mathrm{~V}\)
Subtopic: Electrolytic & Electrochemical Cell |
70%
Level 2: 60%+
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How many of the given statements are true for a fuel cell?
1. (a), (b), (c), and (e)
2. (a), (b), and (e)
3. (a), (c), (d), and (e)
4. (a), (b), (d), and (e)
| (a) | It is a type of Galvanic cell. |
| (b) | It is used for providing electrical power in space programs. |
| (c) | Hydrogen and oxygen are bubbled through porous carbon electrodes into concentrated \(NaOH ~\)solution. |
| (d) | It produces electricity with an efficiency of \(40\%\) |
| (e) | It is a pollution-free cell. |
2. (a), (b), and (e)
3. (a), (c), (d), and (e)
4. (a), (b), (d), and (e)
Subtopic: Electrolytic & Electrochemical Cell |
62%
Level 2: 60%+
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Match the two lists and choose the correct option:
1. (i)-(a); (ii)-(d); (iii)-(c), (iv)-(b)
2. (i)-(b); (ii)-(a); (iii)-(c), (iv)-(d)
3. (i)-(d); (ii)-(a); (iii)-(c), (iv)-(b)
4. (i)-(a); (ii)-(b); (iii)-(c), (iv)-(d)
| List-I | List-II | ||
| (i) | Ni-Cd cell | (a) | Rechargeable |
| (ii) | Fuel cell | (b) | Anode \(\left(\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+2 \mathrm{e}^{-}\right)\) |
| (iii) | Mercury cell | (c) | Used in hearing aid |
| (iv) | Leclanché cell | (d) | Converts combustion energy into electrical energy |
1. (i)-(a); (ii)-(d); (iii)-(c), (iv)-(b)
2. (i)-(b); (ii)-(a); (iii)-(c), (iv)-(d)
3. (i)-(d); (ii)-(a); (iii)-(c), (iv)-(b)
4. (i)-(a); (ii)-(b); (iii)-(c), (iv)-(d)
Subtopic: Electrolytic & Electrochemical Cell |
83%
Level 1: 80%+
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The \(\left(\frac{\partial \mathrm{E}}{\partial \mathrm{T}}\right)_P \) of different types of half cells are as follows:
\(\begin{array}{cccc} \text { A } & \text { B } & \text { C } & \text { D } \\ 1 \times 10^{-4} & 2 \times 10^{-4} & 0.1 \times 10^{-4} & 0.2 \times 10^{-4} \end{array}\)
(Where E is the electromotive force)
Which of the above half cells would be preferred to be used as reference electrode?
1. A
2. B
3. C
4. D
\(\begin{array}{cccc} \text { A } & \text { B } & \text { C } & \text { D } \\ 1 \times 10^{-4} & 2 \times 10^{-4} & 0.1 \times 10^{-4} & 0.2 \times 10^{-4} \end{array}\)
(Where E is the electromotive force)
Which of the above half cells would be preferred to be used as reference electrode?
1. A
2. B
3. C
4. D
Subtopic: Electrolytic & Electrochemical Cell |
70%
Level 2: 60%+
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What is the value of \(E^o_{cell}\) for the cell given below?
\(Ag|Ag^+ || Cu^{2+}|Cu\)
\(Given :\begin{aligned} \mathrm{Ag}^{+}+\mathrm{e}^{-} \longrightarrow \mathrm{Ag},~ & E^{\circ}=x \\ \mathrm{Cu}^{2+}+2 e^{-} \longrightarrow \mathrm{Cu}, ~& E^{\circ}=y \end{aligned}\)
| 1. | x + 2y | 2. | 2x + y |
| 3. | y-x | 4. | y - 2x |
Subtopic: Electrolytic & Electrochemical Cell |
61%
Level 2: 60%+
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