1. Which among the materials are good conductors of heat and electricity?
A coin
5 eraser
C. pencil
D. wood
2. Which of the following is a conductor material?
a metal paper clip used to bind papers
B. a glass test tube used during experimentation
C plastic wrapper used to wrap some solid materials
Drubber rain boots were wom during the rainy season
3. The following matenals are insulators except
A metal
B. rock
C. rubber
D. wood
4. Why do we use copper wires for electric wiring?
A Copper wire does not bend.
B Copper wire is an insulator
C. Copper wire holds much heat.
D. Copper wire is a good conductor.
5. Which is NOT an insulator?
A Copper
B. Plastic
C. Glass
D. wool
6. Which of the following non-conductor materials is used for protection from
dangerous effects of electricity flowing through conductors?
A glass
B. plastic
C. rubber
D. silk​