EXERCISES
A C Sehgal Science Solutions for EXERCISES
Simple step-by-step solutions to EXERCISES questions of Chemical Effects of Electric Current from Living Science 8. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from EXERCISES with Hints & Solutions
Most liquids that conduct electricity are the solutions of _____, _____, _____.
Mercury is a liquid and conducts electricity. Do you think it is an electrolyte?
Solid copper sulphate does not conduct electricity, but when it is dissolved in water, it does conduct electricity. Why?
Copper conducts electricity through electrons, whereas salt solution conducts electricity through ions. Do you agree?
After electroplating a metal spoon with copper, a student interchanged the connections of the copper plate and the spoon. What do you think will happen now?
We should not try to put out a fire in an electrical appliance by pouring water on it. Why?
Instead of taking the trouble of electroplating metals with chromium for making car parts, taps, cycle parts, etc., why are these objects not made of chromium itself?
Why should you not touch electrical appliances with wet hands?
