Electrochemistr...

Only One Option Correct Type

This section contains 16 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct

Q.

During the electrolysis of aqueous Zn(NO₃)₂ solution

Schematic diagram of an electrolytic cell is

The metal that can not be obtained by electrolysis of an aqueous solution of its salt is

[JEE Main 2014]

When during electrolysis of a solution of AgNO₃ ,9650 C of charge pass through the electroplating bath,the mass of silver deposited on the cathode will be

Refining of impure metal is done by electrolysis using impure metal as anode.Select the correct statement about this refining.

W g of Ag is deposited at the cathode of one electrolytic cell due to passage of 1A of current for 1h.Time required for passage of current to deposit W g of Mg by the same value of current is

In the refining of silver by electrolytic method, current of 5A is passed for 2 h using 100 g of impure anode of silver (of 95% purity). Weight of silver anode after electrolysis is

In the electrorefining of metals, impure metal is

In the electrosynthesis,potassium manganate (VII) is converted to manganese(IV) dioxide. By passage of 1F of electrolysis ,one mole of potassium manganate(VII) will form manganese dioxide.

When Al₂O₃ is electrolysed ,cation and anions are discharged. For a given quantity of electricity,ratio of number of moles of Al and O₂ gas is 

1 Faraday of electricity is passed through the solution containing 1 mole each of AgNO₃, CuSO₄, AlCl₃ and SiCl₄. Elements are discharged at the cathode.Number of moles of Ag, Cu,Al and Si formed will be in the ratio of  

During electrolysis of acidified water ,O₂ gas is formed at the anode. To produce O₂ gas at the anode at the rate of 0.224 cc per second at STP,current passed is

A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?

A 300 mL solution of NaCl was electrolysed for 60.0 min. If the pH of the final solution was 12.24,average current used is

100 mL of a buffer of 1 M NH₃(aq) and 1 M NH₄⁺(aq) are placed in two volatic cells separately.A current of 1.5 A is passed through both cells for 20 min. If electrolysis of water only takes place

2H₂O +O₂ + 4e^- → 4OH^- (RHS

2H₂O  → 4H^{+. + O₂} + 4e^- (LHS)

then pH of the 

What product are formed during the electrolysis of a concentrated aqueous solution of sodium chloride using an electrolytic cell in which electrodes are separated by a porous pot?

I. Cl₂(g)
II. NaOH(aq)
III. H₂(g)
IV. NaClO(aq)
V. NaClO₃(aq) 

Select the correct choice.