Olympiad Test: Chemical Effects Of Electric Current - 2
15 Questions MCQ Test Science Olympiad Class 8 | Olympiad Test: Chemical Effects Of Electric Current - 2
When electricity is passed through tap water, the gas which evolved are
An electric current brings about chemical changes in most conducting
A positively charged body has a ____ of electrons.
To make an electric current flow, two components are necessary. First is the circuit and the second is
Which of these is a conductor of electricity?
Which of these is a conductor of electricity?
Electroplating is based on the phenomenon of
A tester is used to test the
In LED, the shorter lead is attached to ____ terminal and longer lead is attached to the ____ terminal.
The copper gets deposited on the plate connected to the ____ terminal of the battery.
The liquid which does not conduct electricity is
Who invented voltaic cell?
The flow of electric current, as opposed to conventional current, to be from _____ charged body to the _____ charged body.
Air, distilled water, plastic, wood, paper, cloth and rubber are the examples of
Chromium is extensively used in electroplating because
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