B. Match the following.
Column A
1. Electric cell
2. Positively-charged electrode
3. Negatively-charged electrode
4. Electrolyte in a dry cell
5. Secondary cells
6. Battery
7. Electric generator
Column B
(a) cathode
(b) moist paste of ammonium chloride, POP and flour
(c) cars, buses and inverters
(d) mechanical energy to electrical energy
(e) electrochemical cell
(f) anode
(g) combination of two or more cells
Answers
Answer:
Electrochemical equivalent: The weight of a substance deposited or evolved during electrolysis by the passage of a specified quantity of electricity and usually expressed in grams per coulomb
Faraday: A measure of the electric charge carried by one mole of electrons, used in electrolysis as the quantity of charge required to deposit or liberate one gram equivalent weight of a substance.
Ampere: By definition, if 1 Coulomb of Charge flows through a Conductor in 1 second then the magnitude of the current is said to be 1 A.
Electrical Energy: Electrical energy is the work done by electric charge. If current i ampere flows through a conductor or through any other conductive element of potential difference V volts across it, for time t second. We know Q=I×t and hence electrical energy becomes, Potential difference×quantity of charge