EASY
8th CBSE
IMPORTANT
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The passage of electric current through a conducting solution causes (magnetic/chemical) effect.

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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>Very Short Answer Type Questions>Q 25
The process of depositing a layer of any desired metal on another metal by means of electricity is called _____. (electro refining/ electroplating)
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Very Short Answer Type Questions>Q 25
If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the _____ terminal of the battery. (positive / negative)
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Short Answer Type Questions>Q 26
Which of the following liquids conduct electricity and which does not conduct electricity?
Lemon juice, Milk, Vinegar, Common salt solution, Sulphuric acid solution, Sugar solution, Distilled water, Honey, Sea water, Rainwater.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Short Answer Type Questions>Q 27
Why is it dangerous to touch a working electrical appliance with wet hands ?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Short Answer Type Questions>Q 28
What is the advantage of using LED in testing the electrical conductivity of liquids ?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Short Answer Type Questions>Q 29
Which effect of electric current is utilised for detecting the flow of current through a solution when a torch bulb is used?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Short Answer Type Questions>Q 29
Which effect of electric current is utilised for detecting the flow of current through a solution when a compass is used ?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Short Answer Type Questions>Q 30
What happens to the needle of a compass kept nearby when electric current is switched on in a wire? Why does this happen?