What is a cathode?

Important Questions on Chemical Effects of Electric Current

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Try out>Q 2

What changes may take place in electrolytes during the process of electrolysis? 

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Try out>Q 3

What are ions?

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Try out>Q 4

Why is iron coated with chromium? 

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Try out>Q 5

What are the commercial uses of electrolysis?

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Exercise>Q 1

In a circuit, the LED works as a/an- 

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Exercise>Q 2

Which device produces light by flow of even small amount of current?

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Exercise>Q 3

Which of the following is the best conductor of electricity?

EASY

8th CBSE

IMPORTANT

Focus Science in Everyday Life>Chapter 14 - Chemical Effects of Electric Current>Exercise>Q 4

Adding acids, bases or salts to a solvent like distilled water makes it-