The quantity of charge required to obtain one mole of aluminium from Al₂O₃ is :

1.  1 F

2.  6 F

3.  3 F

4.  2 F

The cell constant of a conductivity cell-

\(\Lambda _{m(NH_{4}OH)}^{o}\) is equal to -
1. \(\Lambda _{m(NH_{4}OH)}^{o} \ + \ \Lambda _{m(NH_{4}Cl)}^{o} \ - \ \Lambda _{m(HCl)}^{o}\)
2. \(\Lambda _{m(NH_{4}Cl)}^{o} \ + \ \Lambda _{m(NaOH)}^{o} \ - \ \Lambda _{m(NaCl)}^{o}\)
3. \(\Lambda _{m(NH_{4}Cl)}^{o} \ + \ \Lambda _{m(NaCl)}^{o} \ - \ \Lambda _{m(NaOH)}^{o}\)
4. \(\ \Lambda _{m(NaOH)}^{o} \ + \ \Lambda _{m(NaCl)}^{o}\ - \ \Lambda _{m(NH_{4}Cl)}^{o}\)

The half-cell reaction at the anode during the electrolysis of aqueous sodium chloride solution  is represented by : 

1. Na⁺(aq) + e^- ⟶ Na(s) ; \(E_{cell}^{o} \ = \ -2.71 \ V \)

2. 2H₂O(l) ⟶ O₂(g) + 4H⁺(aq) + 4e^- ; \(E_{cell}^{o} \) = 1.23 V

3. H⁺(aq) + e^- ⟶ \(\frac{1}{2}\)H₂(g) ; \(E_{cell}^{o} \) = 0.00 V

4. Cl^-(aq) ⟶ \(\frac{1}{2}\)Cl₂(g) + e^- ; \(E_{cell}^{o}\) \(= 1 . 36  V\)

The positive value of the standard electrode potential of Cu²⁺ / Cu indicates that-

${\mathrm{E}}_{\mathrm{Cell}}^{°}$ of some half cell reactions are given below. 

The correct statements among the following are:

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)

Which of the following expressions are correct descriptions of the state of equilibrium in a daniel cell, if its \(E_{cell}^o\) = 1.1 V?

(a) 1.1 = K_C

(b) $\frac{2.303\mathrm{RT}}{2\mathrm{F}}{\mathrm{logK}}_{\mathrm{C}}=1.1$

(c) ${\mathrm{logK}}_{\mathrm{C}}=\frac{2.2}{0.059}$

(d) log K_C = 1.1

Choose the correct option:
1. (a, b)

2. (b, c)

3. (c, d)

4. (a, d)

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)

 ${\mathrm{\Lambda }}_{\mathrm{m}}^{°}{\mathrm{H}}_2\mathrm{O}$ can be represented by-

a.  ${{\Lambda }^{°}}_{m\left(\mathrm{HCl}\right)}+{{\Lambda }^{°}}_{m\left(\mathrm{NaOH}\right)}°-{\Lambda }_{m\left(\mathrm{NaCl}\right)}°$

b.  ${{\Lambda }^{°}}_{m\left({\mathrm{HNO}}_3\right)}+{{\Lambda }^{°}}_{m\left({\mathrm{NaNO}}_3\right)}-{\Lambda }_{m\left(\mathrm{NaOH}\right)}^{°}$

c.  ${{\Lambda }^{°}}_{m\left({\mathrm{HNO}}_3\right)}+{{\Lambda }^{°}}_{m\left(\mathrm{NaOH}\right)}-{\Lambda }_{m\left({\mathrm{NaNO}}_3\right)}^{°}$

d.  ${{\Lambda }^{°}}_{m\left({\mathrm{NH}}_4\mathrm{OH}\right)}+{{\Lambda }^{°}}_{\mathrm{m}\left(\mathrm{HCl}\right)}-{{\Lambda }^{°}}_{\mathrm{m}\left({\mathrm{NH}}_4\mathrm{Cl}\right)}$

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)