Mention two applications of electroplating.

Important Questions on Chemical Effects of Electric Current

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 2

Seawater is a better conductor of electricity than tap water. Why?

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 3

Name the gases that are obtained during the electrolysis of water.

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 4

How do you choose an electrolyte for electroplating a given metal on another metal?

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 5

What is the advantage of a dry cell over a wet cell?

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 1

Explain the method of copper plating an iron nail.

MEDIUM

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 2

What is an electrolytic cell? Draw its schematic diagram.

MEDIUM

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 3

Draw a schematic diagram of the set-up for electrorefining copper.

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 4

What are electrodes, and how do they function?