A. Lead-acid
B. Mercury oxide
C. Carbon-zinc
D. Silver-oxide
Related Mcqs:
- Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as________materials
A. passive
B. active
C. redundant
D. inert - As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its__________?
A. compactness
B. lower e.m.f.
C. small quantity of electrolyte used
D. higher internal resistance - The internal resistance of an alkali cell is nearly _________ times that of the lead-acid cell
A. two
B. three
C. four
D. five - 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 - Self charge of a Ni-Fe cell is _______ Edison cell
A. equal to
B. less than
C. more than
D. much more than - For a cell to work, which of the following condition(s) become necessary ___________?
A. Two electrodes of different meta’s should be inserted in the electrolyte, not touching each other
B. Electrolyte must chemically react with one of the electrodes
C. Electrolyte liquid or paste should be conducting
D. All above three conditions are necessary - In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3
A. 6 parts of acid to 4 parts of water
B. 4 parts of acid to 4 parts of water
C. 4 parts of acid to 6 parts of water
D. 4 parts of acid to 8 parts of water - If a lead-acid cell is discharged below 1.8 V the following will happen.____________?
A. Capacity of cell will reduce
B. Sulphation of plates will occur
C. Internal resistance will increase
D. All above will occur - Mercury cell has which of the following characteristics ____________?
A. Flat discharge current-voltage curve
B. High power to weight ratio
C. Comparatively longer shelf life under adverse conditions of high temperature and humidity
D. All of the above - The capacity of a lead-acid cell depends on
A. rate of discharge
B. temperature
C. density of electrolyte
D. quantity of active materials
E. all above
