Explain cell reactions of Mercury battery.

Explain Etard Reaction.

Explain reversible reaction

Write cell reations of lead storage battery during discharge.

Explain the cell reactions of NlCAD cell.

Write the electrode reactions and net cell reaction in NICAD battery.

an ore of mercury

Explain the following reactions with examples : Combustion reaction

Explain reversible reaction with example .

Explain the following reactions with the help of balanced equations: Out of sodium and sulphur which is a metal? Explain its reaction with oxygen.

Answer the following questions: Extraction of mercury from its ore cinnabar and write the corresponding chemical reaction .