Questions in electrochemistry

Select	Question
	Which of the following metal does not react with the solution of copper sulphate
	Which of the following displaces Br2 from an aqueous solution containing bromide ions
	Which of the following cell reactions correctly represent the electrolysis of water
	Schematic diagram of an electrolytic-cell is
	The platinum electrodes were immersed in a solution of cupric sulphate and electric current passed through the solution. After some time it was found that colour of copper sulphate disappeared with evolution of gas at the electrode. The colourless solution contains
	Which of the following aqueous solutions remains acidic after electrolysis
	Which of the following aqueous solutions remains neutral after electrolysis
	When electric current is passed through a cell having an electrolyte, the positive ions move towards the cathode and the negative ions towards the anode. If the cathode is pulled out of the solution
	Assertion (A): Sodium ions are discharged in preference to hydrogen ions at a mercury cathodeReason (R): The nature of the cathode can affect the order of discharge of ions
	The density of copper is $8.94 g-mL^{–1}$. Find the charge needed to plate an area of $10 \times 10 cm^2$ to thickness of $10^{–2}$ cm using a $CuS{{O}_{4}}$ solution as electrolyte (atomic weight of $Cu = 63.6$)