A. goggles or other face shield
B. rubber
C. rubber boots and gloves
D. all above safety devices
A. reduces specific gravity of the electrolyte
B. increases specific gravity of the electrolyte
C. produces excessive gassing
D. increases the temperature
A. low sp. gravity electrolyte
B. abnormal high temperature
C. reduced gassing on charge
D. all above
A. dilute sulphuric acid
B. concentrated sulphuric acid
C. NaOH
D. KOH
A. corrosive fumes are produced
B. water is neither formed nor absorbed
C. nickel hydroxide remains unsplit
D. its e.m.f. remains constant
A. using vent plug to permit gas formed during discharge
B. increasing the plate area
C. putting plates very close together
D. all above methods
A. there is a rise in voltage
B. energy is absorbed by the cell
C. specific gravity of H2SO4 is increased
D. the anode becomes chocolate brown in colour (PbCfe) and cathode becomes grey metallic lead (Pb)
E. all of the above