If a strip of $Cu$ metal is placed in a solution of ferrous sulphate,what will happen?

$A$ hypothetical electrochemical cell is shown below.
$A \,|\, A^{+} \,(x \ M)\, ||\, B^{+} \,(y \ M)\, |\, B$
The $emf$ measured is $+ 0.20 \ V.$ The cell reaction is

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

Fill in the blanks :
$(1)$ In a galvanic cell,the anode and cathode possess $\dots$ and $\dots$ charge respectively.
$(2)$ According to convention,the anode and cathode in a galvanic cell are present on the $\dots$ and $\dots$ side respectively.

Match List-$I$ with List-$II$:

List-$I$ (Applications)	List-$II$ (Batteries/Cell)
$A$. Transistors	$I$. Anode $- Zn/Hg$; Cathode $- HgO + C$
$B$. Hearing aids	$II$. Hydrogen fuel cell
$C$. Inverters	$III$. Anode $- Zn$; Cathode $- Carbon$
$D$. Apollo space ship	$IV$. Anode $- Pb$; Cathode $- PbO_2$

Choose the correct answer from the options given below:

For the Galvanic cell:
$Ag_{(s)} \, | \, Ag_2C_2O_{4(s)} \, | \, C_2O_4^{2-} (0.02 \ M) \, || \, Ag^{+}(0.5 \ M) \, | \, Ag_{(s)}$
$EMF$ of the cell is $0.264 \ V$ at $25 \ ^oC$. The $K_{sp}$ of $Ag_2C_2O_{4(s)}$ is:
$[Given: \frac{2.303RT}{F} = 0.06, \ \log 2 = 0.3]$