The watt-hour efficiency of a lead-acid cell varies between

When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in

A. charged state

B. discharged state

C. both (A) and (B)

D. active state

During charging the specific gravity of the electrolyte of a lead-acid battery

A. increases

B. decreases

C. remains the same

D. becomes zero

While preparing electrolyte for a lead-acid battery

A. water is poured into acid

B. acid is poured into water

C. anyone of the two can be added to other chemical

D. none of the above

The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is

A. just one

B. always greater than one

C. always less than one

D. none of the above