Chemical Effect...

In electroplating of the silver spoon with gold, the silver spoon is cleaned with a dilute acid solution to remove the  _________  from its surface.

In electroplating of a silver spoon with gold, the gold plate is connected to:

The process in which a layer of one metal is coated with another metal by electrolysis is called:

The process of depositing a layer of gold on silver is known as:

Which one of the following scientists showed that if electrodes are immersed in water and a current was passed, bubbles of oxygen and hydrogen were produced?

In charging a battery of motor-car, which of the following effect of electric current is used?

Which of the following metals is used in electroplating to make objects appear shining?

Electroplating does not help in:

Electroplating can be done by :

A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that
(i) liquid A is a better conductor than liquid B.
(ii) liquid B is a better conductor than liquid A.
(iii) both liquids are equally conducting.
(iv) conducting properties of liquid cannot be compared in this manner