$\mathrm{BaCl}_2$

$\mathrm{Ca}\left(\mathrm{NO}_3\right)_2$

urea

$\mathrm{Na}_2 \mathrm{SO}_4$

Silver electrode acts as anode and $E_{\text {cell }}^{\circ}$ is -0.34 V .

Copper electrode acts as anode and $E_{\text {cell }}^{\circ}$ is +0.46 V .

Silver electrode acts as a cathode and $E_{\text {cell }}^{\circ}$ is -0.34 V .

Copper electrode acts as cathode and $E_{\text {cell }}^{\circ}$ is +0.46 V .

linear with +ve slope and non zero +ve intercept

linear with -ve slope and non zero +ve intercept

linear with -ve slope and zero intercept

linear with $+v e$ slope and zero intercept

Gelatin < haemoglobin < sodium acetate

Gelatin > haemoglobin > sodium acetate

Haemoglobin $>$ gelatin $>$ sodium acetate

Sodium acetate $>$ gelatin $>$ haemoglobin