Question

Which one amongst the following is best conductor of heat-
(a) Iron
(b) Asbestos (c) Glass
(d) Wood​

Answer 1

The Correct Answer is:- a) Iron

Iron is one of the best conductors of heat.

• Iron is a metal and metals are good conductors of heat.
• Iron is a good conductor of heat because a large number of electrons are present inside it that are held together by metallic bonds.
• when the iron rod is heated the thermal conductivity increases and electrical conductivity decreases because when the rod is heated the electron inside the iron rod vibrates and moves in a random direction.
• That causes a collision between them that decreases the electrical conductivity and increases thermal conductivity.

Asbestos, Glass and wood are the insulators of heat because they do not allow heat to move through them.

So, The Correct Answer is:- a) Iron