ELECTROLYSIS AND STORAGE BATTERIES QUIZ

Electrolyte used in a lead-acid cell is

dilute H₂SO₄

only water

only H₂SO₄

NaOH

TRUE ANSWER : ?
YOUR ANSWER : ?

In a lead-acid cell, lead is called as

positive active material

negative active material

None of the listed here

passive material

TRUE ANSWER : ?
YOUR ANSWER : ?

Weston standard cell at 20°C has voltage of ____ volts.

1.0187

1.2

1.5

0.8

TRUE ANSWER : ?
YOUR ANSWER : ?

The open circuit voltage of any storage cell depends wholly upon

on the strength of its electrolyte

all of the listed here

its temperature

its chemical constituents

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following cell has a reversible chemical reaction ?

Silver-oxide

Mercury oxide

Lead-acid

Carbon-zinc

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following primary cells has the lowest voltage ?

Mercury

Lithium

Carbon-zinc

Zinc-chloride

TRUE ANSWER : ?
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The average charging voltage for alkali cell is about

1.7 V

1 V

1.2 V

2.1 V

TRUE ANSWER : ?
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Excessive charging a battery tends to

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

increase the internal resistance of the battery

produce gassing

bring about all above changes

TRUE ANSWER : ?
YOUR ANSWER : ?

In constant voltage charging method, the charging current from discharged to fully charged condition

Decreases

None of the listed here

Increases

Remains same

TRUE ANSWER : ?
YOUR ANSWER : ?

Mercury cell has which of the following characteristics?

Flat discharge current-voltage curve

All of these

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

High power to weight ratio

TRUE ANSWER : ?
YOUR ANSWER : ?