Electrolysis and Storage of Batteries

A. A storage cell has a reversible chemical reaction
B. A lead-acid cell can be recharged
C. A carbon-zinc cell has unlimited shelf life
D. A primary cell has an irreversible chemical reaction

A. water is poured into acid
B. acid is poured into water
C. anyone of the two can be added to other chemical

A. chlorine
B. dust particles
C. lead crystals
D. iron

A. prevent local heating
B. prevent short-circuiting
C. reduce path resistance
D. prevent corrosion

A. Lead-acid
B. Mercury oxide
C. Carbon-zinc
D. Silver-oxide

A. they have same e.m.f.
B. they have same make
C. they have same ampere-hour capacity
D. they have identical internal resistance

A. Dilute H2S04
B. Concentrated H2SO4
C. Water
D. Any of the above

A. Lead-acid battery
B. Nickel-iron battery
C. Dry cell battery
D. Silver oxide battery

A. to reduce evaporation of water from electrolyte
B. to exclude dirt and foreign matter from the electrolyte
C. to discharge both of the above functions
D. to discharge none of the above functions

A. 2%
B. 4%
C. 6%
D. 8%