Question

IV. Choose the correct Answer.

1. Plastic is an example of ....................... ( )

A) Conductor B) Semiconductor C) an insulator D) none

2. Rubber is ................ ( )

A) A conductor B) an insulator C) semiconductor D) a metal

3. pure water is ( )

A) a conductor B) a semiconductor C) an insulator D) metal

4. When small currents passing through the circuit, it is detected by ( )

A) LED B) bulb C) tube light D) incandescentbulb

5. Identify the conductors of electric current ( )

A) metals B) acids C) bases D) all

6. Materials which allow to pass current through them are called ( )

A) conductor B) insulator C) poor conductor D) none

7. This is also used in ornamentation and decoration ( )

A) Electro typing B) Electro plating C) Electric resistance D) Galvanizing

8. The material which will not allow to pass electric current known as ( )

A) Electric conductor B) Insulator C) Electric resistance D) semi conductor

9. Electro plating is possible through ( )

A) Electrolysis B) Chemical process C) Dissolving D) Filtration

10. It is not an electrolyte ( )

A) Sulphuric acid B) Lemon juice C) Tamarind juice D) Detergent solution​

Answer 1

1) None

2) Semiconductor

3) A semiconductor

4) Bulb

5) Metals

6) Insulator

7) Galvanizing

8) Electric resistance

9) Electrysis

10) Sulphuric acid

Answer 2

Answer:

c) an insulator

Explanation:

A substance which does not allow to flow electricity(heat) is called insulator

example: plastic;

plastic is the answer