chemical effects of electric current quiz :)
Quiz
•
Chemistry, Science
•
8th Grade
•
Hard
Kaveri Deshpande
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which Of The Following Is Not An Application Of The Chemical Effect Of Electric Current?
Electroplating of metals
Purification of metals
Decomposition of elements
Decomposition of compounds
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sugar solution is a good conductor of electricity.
True
False
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which of the following statements is/are correct?
The object to be electroplated is taken as the negative electrode
One of the most common applications of chemical effect of electric current is electroplating
Small amount of a mineral salt present naturally in water makes it a good conductor of electricity.
all of them are correct
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which Of The Following Metals Is Used In Electroplating To Make Objects Appear Shining?
Iron
Copper
Chromium
Aluminium
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If Plus Sign (+) Denotes The Positive Electrode And Minus Sign (-) Denotes The Negative Electrode, Then Which Of The Following Statement Is Correct For An Iron Spoon To Be Copper Plated?
Iron spoon (+), copper plate (-), Iron sulphate electrolyte
Iron spoon (-), copper plate (+), Iron sulphate electrolyte
Copper plate (-), Iron spoon (+), Copper sulphate electrolyte
Copper plate (+), Iron spoon (-), Copper sulphate electrolyte
none of them
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For Electroplating An Iron Object With Copper Metal Or Copper Plating, The method that we should not follow is?
The iron object is made negative electrode.
The copper plate is made positive electrode.
Iron sulphate solution is taken as electrolyte.
Copper sulphate solution is taken as electrolyte.
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