NEW
Font size
WorksheetsChemical Effects of Electric Current Quiz
Total questions: 15
Worksheet time: 8mins
What is a good conductor of electricity?
Wood
Plastic
Copper
Rubber
What should you use for experiments instead of the electric supply from the mains?
Generator
Inverter
Electric cells
Solar panels
What happens when a liquid allows electric current to pass through it?
The bulb does not glow
The bulb glows
The tester stops working
The circuit remains incomplete
What is the effect of a weak current on a bulb?
The bulb explodes
The bulb glows brightly
The bulb flickers
The bulb does not glow
What can be used to detect a weak current?
A barometer
A magnetic compass
A voltmeter
A thermometer
What is the role of an LED in a tester?
It glows even with a weak current
It explodes with a weak current
It does not glow at all
It glows with a strong current
What is the process of depositing a layer of metal on another material called?
Electrolysis
Electrostatic
Electroplating
Electromagnetism
What happens when electric current passes through a conducting solution?
It causes magnetic changes
It causes chemical reactions
It causes no change
It causes physical changes
What is a common application of electroplating?
Making batteries
Generating electricity
Coating metal objects
Heating water
Why is chromium plating used?
It is shiny and resists scratches
It is a good conductor
It is heavy
It is cheap
What makes tap water a good conductor of electricity?
Presence of dissolved salts
Presence of oil
Presence of sugar
Presence of air
What is the effect of adding salt to distilled water?
It becomes basic
It becomes a poor conductor
It becomes a good conductor
It becomes acidic
What is the purpose of adding dilute sulphuric acid to copper sulphate solution?
To make it more conductive
To make it evaporate
To make it less conductive
To change its color
What is the result of passing current through copper sulphate solution?
Copper gets deposited on the negative electrode
Copper does not get deposited
Copper gets deposited on the positive electrode
Copper gets deposited on both electrodes
What is a characteristic of most liquids that conduct electricity?
They are non-conductive
They are oils
They are pure water
They are solutions of acids, bases, and salts
