- 1(current)
Q. No.Match Column I (Types of cells) with Column II (Characteristics shown by cells) and mark the appropriate option:
| Column I (Type of cell) |
Column II (Characteristics) |
||
| A | Lechlanche cell | (i). | Cell reaction 2H2 +O2 → 2H2O |
| B | Ni-Cd cell | (ii). | Does not involve any ion in solution and is used in hearing aids. |
| C | Fuel cell | (iii). | Rechargeable |
| D | Mercury cell | (iv). | Reaction at anode: Zn → Zn2+ + 2e- |
Codes:
| Options: | A | B | C | D |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iv) | (iii) | (i) | (ii) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iv) | (i) | (iii) | (ii) |
Subtopic: Batteries & Salt Bridge |
85%
Level 1: 80%+
Hints
The correct statement regarding dry cells among the following is:
| a. | It is also known as the Leclanche cell. |
| b. | The electrolyte is a moist paste of ammonium chloride (NH4Cl) and zinc chloride (ZnCl2). |
| c. | The cathodic reaction is : MnO2 + NH4++ e-→ MnO(OH) + NH3 |
| 1. | Only a and b are correct | 2. | Only c is correct |
| 3. | Only b and c are correct | 4. | All are correct |
Subtopic: Batteries & Salt Bridge |
76%
Level 2: 60%+
Hints
Identify the reactants (R) and product (P) in a typical fuel cell.
| 1. | R = H2(g), O2(g); P = H2O2(l) |
| 2. | R = H2(g), O2(g); P = H2O(l) |
| 3. | R = H2(g), O2(g), C l2(g); P = HClO4(aq) |
| 4. | R = H2(g), N2(g); P = NH3(aq) |
Subtopic: Batteries & Salt Bridge |
75%
Level 2: 60%+
NEET - 2020
Hints
Select the incorrect statement regarding mercury cell:
| 1. | It consists of zinc-mercury amalgam as anode. |
| 2. | It consists of a paste of NH4Cl and ZnCl2 as electrolyte. |
| 3. | It consists of paste of HgO and carbon as cathode. |
| 4. | It is suitable for low current devices like hearing aids, watches etc. |
Subtopic: Batteries & Salt Bridge |
71%
Level 2: 60%+
Hints
- 1(current)
Q. No.
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