Related InterviewSolutions

• To carry out the so-called “electrolysis of water”. Sulphuric acid is added to water.How does the addition of sulpuric acid produce a conducting solution?
• With reference to electroplating answer the following :(i) Why are articles electroplated ?(ii) Why a small current passed for a longer period is preferred over high current for a shorter period ?(iii) Why the article to be electroplated is made a cathode ? (iv) Why a direct current is used ? 
• How a spoon is electroplated with silver ?
• Explain, how the blue colour of electrolyte fades during electrolysis of CuSO4 solution ?
• Give the electrode reactions for formation of1. Lead metal and bromine vapours from molten PbBr2 using inert electrodes2. H2 and O2 gas (2:1) from acidified water using inert Pt electrodes. 
• State your observation: At the cathode when acidified aq. CuSO4 spin. is electrolyzed with copper electrodes.
• Differentiate between an Electrolytic cell and Electrochemical cell. 
• Choose A, B, C or D to match the descriptions (i) to (v) below. Some alphabets may be repeated.A. non-electrolyteB. strong electrolyteC. Weak electrolyteD. metallic conductor(i) Molten ionic compound(ii) Carbon tetrachloride(iii) An aluminium wire(iv) A solution containing solvent molcules, solute molecules and ions formed by the dissociation of solute molecules.(v) A sugar solution with sugar molecules and water molecules.
• To carry out the so-called “electrolysis of water”, sulphuric acid is added to water. How does the addition of sulphuric acid produce a conducting solution?
• Compare the flow of electricity through a nickel wire and nickel sulphate solution.