Questions in electrochemistry

Select	Question
	The cell reaction, $Cu+2A{{g}^{+}}\to C{{u}^{+2}}+Ag$ is best represented by
	In dry cell the reaction which takes place at the zinc anode is
	Which of the following reaction is used to make a fuel cell
	Which of the following is not used to construct salt bridge
	The chemical reaction taking place at the anode of a cell is
	Consider the Galvanic cell, $Z{{n}^{\Theta }}\|ZnS{{O}_{4}}\|\|CuS{{O}_{4}}\|C{{u}^{\oplus }}$; the reaction at cathode is
	Which of the following statements about Galvanic cell is incorrect
	In the electrochemical cell, ${{H}_{2}}(g)\,1atm\|{{H}^{+}}(1M)\|\|C{{u}^{2+}}(1M)\|Cu\,(s)$. Which one of the following statements is true
	$\underset{\text{(anode)}}{\mathop{Z{{n}_{(s)}}\|Z{{n}^{2+}}_{(aq)}\|}}\,\underset{\text{(cathode)}}{\mathop{\|C{{u}^{2+}}_{(aq)}\|}}\,C{{u}_{(s)}}$ is
	In which cell the free energy of a chemical reaction is directly converted into electricity