Which of the following is $NOT$ a difficulty in setting up a Standard Hydrogen Electrode $(SHE)$?

Explain the construction of a galvanic cell based on the Daniell cell. In a galvanic cell,explain the positive and negative electrodes with suitable chemical reactions.

At $25^{\circ} C$,the molar conductance at infinite dilution for the strong electrolytes $NaOH$,$NaCl$ and $BaCl_{2}$ are $248 \times 10^{-4}$,$126 \times 10^{-4}$ and $280 \times 10^{-4} \ S \ m^{2} \ mol^{-1}$ respectively. $\lambda_{m}^{o} Ba(OH)_{2}$ in $S \ m^{2} \ mol^{-1}$ is

In fuel cells,$Pt-Pd$ are used as catalysts. Identify the full names of these catalysts.

For the electrochemical cell,$M|M^{+}||X^{-}|X$,${E^{o}}(M^{+}/M) = 0.44 \ V$ and ${E^{o}}(X/X^{-}) = 0.33 \ V$. From this data,one can deduce that:

The metals that are employed in the battery industries are
$A$. $Fe$ $B$. $Mn$ $C$. $Ni$ $D$. $Cr$ $E$. $Cd$
Choose the correct answer from the options given below: