ELECTROLYSIS AND STORAGE BATTERIES QUIZ

In order that a hydrometer may float vertically in electrolyte its C.G. should be

undisturbed

raised

displaced sideways

lowered

TRUE ANSWER : ?
YOUR ANSWER : ?

Dry cell is modification of

Edison cell

Deniell cell

Lead-acid cell

Leclanche cell

TRUE ANSWER : ?
YOUR ANSWER : ?

Internal short circuits are caused by

excess accumulation of sediment at the bottom of the cell

breakdown of one or more separators

both of the options given here

none of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Level of electrolyte in a cell should be _____ the level of plates

none of the listed here

above

below

equal to

TRUE ANSWER : ?
YOUR ANSWER : ?

In a lead-acid cell, lead is called as

passive material

positive active material

negative active material

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Mercury cell has which of the following characteristics?

Flat discharge current-voltage curve

High power to weight ratio

Comparatively longer shelf life under adverse conditions of high temperature and humidity

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Excessive formation of lead sulphate on the surface of the plates happens because of

allowing a battery to stand in discharged condition for a long time

low level of electrolyte

all of the listed here

persistent undercharging

TRUE ANSWER : ?
YOUR ANSWER : ?

The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity”. The above statement is associated with

Faraday’s law of electromagnetic

Newton’s law

Gauss’s law

Faraday’s law of electrolysis

TRUE ANSWER : ?
YOUR ANSWER : ?

During discharge, the active material of both the positive and negative plates is changed to

Pb02

PbS02

Pb

PbS04

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

compactness

small quantity of electrolyte used

lower e.m.f.

TRUE ANSWER : ?
YOUR ANSWER : ?