Chemical Effect...

Which of the following statements about electroplating is incorrect?

Which of the following elements would get discharged more readily at the cathode during electrolysis?

Which of the following is not an inert electrode?

Electrical appliances can be run on a battery of dry cells, which provides the potential difference across its terminals.

Which aspect of electric current is being demonstrated by this application?

In an electric heater, current is allowed to flow through the coil. It turns red and is ready to use. Which of the following energy conversions takes place here?

Why is chromium used for electroplating?

(a) It does not corrode.
(b) It is scratch resistant.
(c) It is cheap, easily available and can be electroplated very easily.

A test lamp does not glow while testing the conductivity of a liquid. What does it imply?

We have distilled water in two plastic bottles labelled as A and B. We add hydrochloric acid to the water in bottle A and caustic soda to the water in bottle B. Which of the following will hold true?

According to Faraday's first law, the amount of substance deposited at electrode when electric current is passed through an electrolyte depends upon the

(a) amount of current passed
(b) dissociation of electrolyte
(c) time till which current is passed
(d) nature of electrode material

Electroplating is coating a metal with a layer of another metal. The purpose of the process is: