ELECTROLYSIS AND STORAGE BATTERIES QUIZ

Following will occur if level of electrolyte falls below plates

life of the cell is reduced

capacity of the cell is reduced

open plates are converted to lead sulphate

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

A battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.

2.8

2.5

2.4

2.0

TRUE ANSWER : ?
YOUR ANSWER : ?

Negative plate of an Edison cell is made of

copper

lead

iron

silver oxide

TRUE ANSWER : ?
YOUR ANSWER : ?

Excessive charging a battery tends to

to corrode the positive plates into lead peroxide thereby weakening them physically

bring about all above changes

produce gassing

increase the internal resistance of the battery

TRUE ANSWER : ?
YOUR ANSWER : ?

While preparing electrolyte for a lead-acid battery

water is poured into acid

anyone of the two can be added to other chemical

none of the listed here

acid is poured into water

TRUE ANSWER : ?
YOUR ANSWER : ?

The common impurity in the electrolyte of lead-acid battery is

chlorine

lead crystals

iron

dust particles

TRUE ANSWER : ?
YOUR ANSWER : ?

If a lead-acid cell is discharged below 1.8 V the following will happen.

All of the listed here

Capacity of cell will reduce

Internal resistance will increase

Sulphation of plates will occur

TRUE ANSWER : ?
YOUR ANSWER : ?

As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

higher internal resistance

small quantity of electrolyte used

lower e.m.f.

compactness

TRUE ANSWER : ?
YOUR ANSWER : ?

When a lead-acid battery is in fully charged condition, the color of its positive plate is

dark brown

brown

none of the listed here

dark grey

TRUE ANSWER : ?
YOUR ANSWER : ?

Internal resistance of a cell is reduced by

increasing the plate area

all of the listed here

putting plates very close together

using vent plug to permit gas formed during discharge

TRUE ANSWER : ?
YOUR ANSWER : ?

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