Q. No.The conductivity of an electrolytic solution depends on
a. Nature of the electrolyte
b. Concentration of the electrolyte
c. Power of AC source
d. Distance between the electrodes
The correct statements from the four statements given above are:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The incorrect statement about the solution of electrolytes is:
| 1. | Conductivity of solution depends upon the size of ions. |
| 2. | Conductivity depends upon the viscosity of solution. |
| 3. | Conductivity does not depend upon the solvation of ions present in solution. |
| 4. | Conductivity of solution increases with temperature. |
| Column I | Column II | ||
| (A) | \( \wedge_m\) | (i) | \(l/A\) |
| (B) | \(G^*\) | (ii) | \(\rho l/A \) |
| (C) | \(\kappa\) | (iii) | \(\kappa /C\) |
| (D) | R | (iv) | \(\frac{G^*}{R}\) |
1. (A) →(i), (B)→(iii), (C) →(ii), (D)→ (iv)
2. (A) →(iii), (B)→(i), (C) →(iv), (D)→ (ii)
3. (A) →(ii), (B)→(iv), (C) →(iii), (D)→ (i)
4. (A) →(iv), (B)→(ii), (C) →(i), (D)→ (iii)
1. 1.29 cm–1
2. 12.9 cm–1
3. 129 cm–1
4. 1290 cm–1
The correct choice among the given regarding formula of Conductivity is -
(a)
(b)
(c)
(d)
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The cell constant of a conductivity cell-
| 1. | Changes with the change of electrolyte. |
| 2. | Changes with the change of concentration of electrolyte. |
| 3. | Changes with the temperature of the electrolyte. |
| 4. | Remains constant for a cell. |
Match the terms given in Column I with the units given in Column II.
|
Column I |
Column II |
||
| A. | 1. |
S cm–1 |
|
| B. | Ecell | 2. | m–1 |
| C. | κ | 3. | S cm2 mol–1 |
| D. | G* | 4. | V |
Codes:
| Options: | A | B | C | D |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Resistance of a conductivity cell filled with 0.1 mol L–1 KCl solution is 100 Ω. If the resistance of the same cell when filled with 0.02 mol L–1 KCl solution is 520 Ω. The conductivity of 0.1 mol L–1 KCl solution is 1.29 S/m. The molar conductivity of 0.02 mol L–1 KCl solution is-
1. 134 S cm2 mol–1
2. 124 S cm2 mol–1
3. 144 S cm2 mol–1
4. 154 S cm2 mol–1
| 1. | 0.124 S cm2 mol–1 | 2. | 1.24 S m2 mol–1 |
| 3. | 124 S cm2 mol–1 | 4. | 124 S m2 mol–1 |
Given below are two statements:
| Assertion (A): | Conductivity of all electrolytes decreases on dilution. |
| Reason (R): | On dilution number of ions per unit volume decreases. |
| 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. |
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