Electrochemistry — Chemistry STD 12 Science — Question

→ We know that a galvanic cell directly converts chemical energy into electricity and is highly efficient.
→ It is now possible to make such cells in which reactants are fed continuoulsy to the electrodes and products are removed continuously from the electrolyte compartment.
→ "Galvanic cells that are designed to convert the energy of combustion of fuels like hydrogen. methane, methanol. etc. directly into electrical energy are called fuel cells."
→ Fuel cells are pollution free. Fuel cells produce electricity with an efficiency of about 70% compared to thermal plants whose efficiency is about 40%.