MEDIUM
8th CBSE
IMPORTANT
Earn 100

What is meant by the chemical effect of electric current? Explain with the help of an example.

Important Questions on Chemical Effects of Electric Current

EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 41
Name any two applications of the chemical effect of electric current.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 41
What is electrolysis? Explain why, in the electrolysis of water, 'acidified water' is used.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 42
Name three types of substances in which an electric current can produce a chemical effect.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 42
State some of the characteristics of chemical changes brought about by the chemical effect of electric current.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 42
Why does an electric bulb glow when a current passes through it ?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 43
What is meant by electroplating? What is the purpose of electroplating?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 43
Which properties of chromium metal make it suitable for electroplating it on car bumpers, bath taps and bicycle handlebars, etc., made of iron ?
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 44
A strip of impure copper metal is given to you. Describe briefly how you will purify it by using the chemical effect of electric current. Draw a labelled diagram of the experimental set up used for this purpose.