Decide which of the following statements is not correct regarding the conductance of electricity through electrolyte (a) Chemical change occurs (b) Conducts electricity in dissolved or molten state (c) Resistance usually increases with the increase in temperature (d) Electricity is conducted through ions

In the refining of impure copper metal by the process of electrolysis, the mass of which electrode increases? OR In the electroplating of gold over silver, what is used as electrolyte?

Mention two classes of electrolytes. How can they be differentiated?

In the extraction of metal by the process of electrolysis at which electrode does the following reaction occur ? M+ + e− ⇌ M (M = Metal) Is it an oxidation or a reduction reaction? Answer with reason. OR Mention one use of aluminium. Why acidic foods should not be kept in an aluminium container?

Write the reaction occurring at the cathode in the electrolysis of acidulated water using platinum electrodes. Why is acidulated water instead of pure water used for electrolysis? [1+2] OR Write the reactions occurring at cathode and anode in the electrolysis of the aqueous solution of CuSO4 using Cu - electrodes. What is used as anode in refining of impure copper metal by the process of electrolysis? [2+1]

Which of the following has the highest electrical conductivity? (a) Aqueous solution of sugar (b) Pure water (c) Liquid hydrogen chloride (d) None of these

How is electricity conducted in an aqueous solution of an electrolyte during electrolysis?

Write the name of the electrolyte used for gold plating.

Why does an aqueous solution of HCl gas conduct electricity?

In which electrode does oxidation take place during electrolysis of water ? OR Which one between AC and DC is used in electrolysis ?

Fill up the blank : During electrolysis, electricity is carried through the electrolyte by ____

Write whether the following statement is True or False : The electrical conductivity of solid NaCl is greater than the electrical conductivity of fused NaCl.