Chemical effects of electric current Worksheet-2

Chemical effects of electric current Worksheet-2

1. Math the following:

Multiple choice questions:

2. Plastic wire is

A. an insulator                              B. a conductor

C. both of these                             D. none of these

3. Electroplating is based on:

A. magnetic effect of electricity

B. chemical effect of electricity

C. heating effect of electricity

D. physical effect of electricity

4. Adding common salt to distilled water makes it:

A. good conductor

B. Insulator

C. No

D. both good conductor and Insulator

5. An electrolyte is:

A. a metal

B. a solution

C. a liquid that conducts current

D. all of these

6. Copper wire is a:

A. good conductor

B. poor conductor

C. both good conductor and poor conductor

D. none of these

7. 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:

A. liquid A is a better conductor than liquid B.

B. liquid B is a better conductor than liquid

C. both liquids are equally conducting.

D. conducting properties of liquid cannot be compared in this manner.

Answer Key:

1. A–S, B–T, C–P, D–Q, E–R

2. A

3. B

4. A

5. C

6. A

7. A