Name three liquids, which would conduct electricity.

Important Questions on Chemical Effects of Electric Current

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q 2

Why it is advised not to touch any electrical appliance with wet hands?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q 3

Why is acid or salt added to water during electrolysis?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q 4

What happens when salt is disolved in water?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q 5

Why are cations drawn towards cathode and anions towards anode?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q 6

Mention the various chemical effects of current.

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q ➤

Why is water not used for extinguishing electrical fires?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 14 - Chemical Effects of Electric Current>LET's Learn And Evaluate>Q ➤

Sohan wanted to plate an iron spoon with copper. He took copper sulphate as an electrolyte. He connected the iron spoon with the positive terminal of the cell and the copper plate to the negative terminal. He closed the circuit and found no change. What went wrong?