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.Management Sciences
Category: Electrolysis and Storage of Batteries
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
Which of the following primary cells has the lowest voltage_________ ?
A. Lithium
B. Zinc-chloride
C. Mercury
D. Carbon-zinc
Undercharging___________?
A. reduces specific gravity of the electrolyte
B. increases specific gravity of the electrolyte
C. produces excessive gassing
D. increases the temperature
Dry cell is modification of____________?
A. Deniell cell
B. Leclanche cell
C. Lead-acid cell
D. Edison cell
The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity. The statement is associated with____________?
A. Newton’s law
B. Faraday’s law of electromagnetic
C. Faraday’s law of electrolysis
D. Gauss’s law
The following indicate that battery on charge has attained full charge___________?
A. colour of electrode
B. gassing
C. specific gravity
D. all above
During the charging and discharging of a nickel-iron cell____________?
A. corrosive fumes are produced
B. water is neither formed nor absorbed
C. nickel hydroxide remains unsplit
D. its e.m.f. remains constant
Internal resistance of a cell is due to___________?
A. resistance of electrolyte
B. electrode resistance
C. surface contact resistance between electrode and electrolyte
D. all above
The capacity of a battery is expressed in terms of____________?
A. current rating
B. voltage rating
C. ampere-hour rating
D. none of the above
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