Which of the following metals can displace copper from a copper sulphate solution?

Identify the gas produced due to reduction of $NH_4^{+}$ ions at cathode during working of dry cell.

How do the ions transfer between solutions in an electrochemical cell?

What is an electrode and a half-cell? Explain their symbolic representation with a suitable example.

Which of the following is incorrect in a galvanic cell?

What is the molar conductivity of $CH_3-CO_2H$ at infinite dilution?
Given that,
$\wedge_{m}^{o}(CH_3-CO_2)_2Ba = x_1 \ S \ cm^2 \ mol^{-1}$
$\wedge_{m}^{o}(BaCl_2) = x_2 \ S \ cm^2 \ mol^{-1}$
$\wedge_{m}^{o}(HCl) = x_3 \ S \ cm^2 \ mol^{-1}$