MEDIUM
8th CBSE
IMPORTANT
Earn 100
For electroplating copper on an iron object, which terminal of the battery (positive or negative) is connected to the iron object? Also name the electrolyte you will use for this purpose.
Important Questions on Chemical Effects of Electric Current
MEDIUM
8th CBSE
IMPORTANT
What is meant by the chemical effect of electric current? Explain with the help of an example.
EASY
8th CBSE
IMPORTANT
Name any two applications of the chemical effect of electric current.
MEDIUM
8th CBSE
IMPORTANT
What is electrolysis? Explain why, in the electrolysis of water, 'acidified water' is used.
EASY
8th CBSE
IMPORTANT
Name three types of substances in which an electric current can produce a chemical effect.
MEDIUM
8th CBSE
IMPORTANT
State some of the characteristics of chemical changes brought about by the chemical effect of electric current.
MEDIUM
8th CBSE
IMPORTANT
Why does an electric bulb glow when a current passes through it ?
EASY
8th CBSE
IMPORTANT
What is meant by electroplating? What is the purpose of electroplating?
MEDIUM
8th CBSE
IMPORTANT
Which properties of chromium metal make it suitable for electroplating it on car bumpers, bath taps and bicycle handlebars, etc., made of iron ?
