Applied science

The capacity of a battery is expressed in terms of

• Current rating

• Voltage rating

• Ampere hour rating

• None of the above

The storage battery generally used in electric power station is

• Nickel-cadmium battery

• Zinc carbon battery

• Lead-acid battery

• None of the above

On over charging a battery

• It will bring about chemical change in active materials

• It will increase the capacity of the battery

• It will raise the specific gravity of the electrolyte

• None of the above

Battery charging equipment is generally installed

• In well ventilated location

• In clean and dry place

• As near as practical to the battery being charged

• In location having all above features

Nominal cell value of Ni-Cd battery is

• 1.2V

• 2V

• 3V

Electrochemical reaction can be reversible in

• Primary cell

• secondary cell

• zinc cell

• zinc-alloy cell

Redox reaction is a

• oxidation

• reduction

• oxidation-reduction

• natural reaction