Questions in electrochemistry

Select	Question
	Which one of the following metals could not be obtained on electrolysis of aqueous solution of its salts
	Which of the following reaction is possible at anode
	During the electrolysis of aqueous zinc nitrate
	The electrolysis of a certain liquid resulted in the formation of $H_2$ at the cathode and $Cl_2$ at the anode. The liquid is
	In the electrorefining of metals, impure metals is
	When a dilute aqueous $Li_2SO_4$ solution is electrolysed, the products formed at the anode and cathode, respectively, are
	During electrolysis of $NaCl$ solution apart of the reaction is $Na^++e^– \to Na$. This is termed as
	Which of the following metal can deposit copper from copper sulphate solution
	Electrolysis of aqueous $HCl$ solution produces
	The cathodic reaction in electrolysis of dilute $H_2 SO_4$ with platinum electrode is