Types of Conductor

Q. Which of the following is a good conductor of heat?

1. Plastic
2. Wood
3. Both wood and plastic
4. Steel

Q.

What is a bimetallic strip? Where is it used?

Q.

A material which allows heat to easily pass through it is known as a/an ______________.

1. conductor and insulator

2. conductor

3. insulator

4. radiator

Q.

Choose the correct option.

Apparatus used to spread heat energy evenly under glass flask is called ___________

1. Tripod stand

2. Iron stand

3. Wire gauze

4. Bunsen burner

Q.

Give reasons: Handles of cooking utensils are made up of wood or ebonite.

Q. Which of the following is a bad conductor of heat?

1. Wool
2. Copper
3. Aluminium
4. Iron

Q.

Rohit took with him some nylon ropes, when he was going for rock climbing. Can you tell why he selected nylon ropes instead of ropes made of cotton or jute?

Q.

Statement 1: CFLs are preferred over electric bulbs.
Statement 2: Copper wire used in household circuits does not get hot, but nichrome wire does.

Q.

1. True
2. False

Q.

Why are most of the apparatus made of glass?

Q.

Give reasons for the following.

Immersion rods for heating liquids are made up of metallic substances.

Q.

A material which allows heat to easily pass through it is known as ___.

1. insulator

2. resistor

3. conductor

4. radiator

Q. Wool is ___.

1. made of cellulose
2. lustrous in appearence
3. an insulator of heat
4. a conductor of heat

Q. Why do cooking vessels usually have copper bottoms?

1. Copper is an insulator.
2. Copper has low melting point.
3. Copper is a good conductor of heat.
4. Copper is cheap.

Q. Why do cooking vessels usually have copper bottoms?

1. Copper has low melting point.
2. Copper is an insulator of heat.
3. Copper is a good conductor of heat
4. Copper is cheap.

Q. Substances that are not good conductors are known as:

1. Superconductors
2. Semi conductors
3. Insulators
4. Crystals

Q. A material that allows the flow of heat through it easily is called:

1. Insulator
2. Capacitor
3. Conductor
4. Semiconductor

Q. Which among the following is a conductor of heat?

1. Steel spoon
2. Wooden board
3. Foam board
4. Plastic plate