Olympiad Test: Chemical Effects Of Electric Current - 1
10 Questions MCQ Test Science Olympiad Class 8 | Olympiad Test: Chemical Effects Of Electric Current - 1
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Adding solute salt to water
Which of these is not true?
The gold-leaf electroscope is used to
The gold leaf electroscope has been used by physicists for hundreds of years. It indicates the presence and nature of a charge through the application of charge to a metal top plate connected through a stem to two pieces of gold leaf. The movement of one piece of gold leaf away from the other shows that the electroscope is charged.
Hence, a gold leaf electroscope can detect the presence of charge and test the kind of charge.
During electroplating, the metal on which electroplating is to be done should be
Chromium plating is done on objects like
The process of deposition of a layer of any desired metal on another metallic object by means of electricity is called
Which of these metals will you electroplate on iron to protect it from rusting and to make it shine?
The decomposition of an electrolyte on passing electric current is called
In which of these is current not conducted by electrons?
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