A. Manganese-alkaline
B. Carbon-zinc
C. Lithium
D. Mercury
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. dark grey
B. brown
C. dark brown
D. none of above
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. goggles or other face shield
B. rubber
C. rubber boots and gloves
D. all above safety devices
A. silver oxide
B. lead oxide
C. lead
D. zinc powder
A. water is poured into acid
B. acid is poured into water
C. anyone of the two can be added to other chemical