Metals are good conductors of heat because
A. Their atoms collide frequently
B. Their atoms are relatively far apart
C. They contain free electrons
D. They have high density
Answer: Option A
Solution(By Examveda Team)
Metals are particularly good conductors of heat because their particles are very closely packed so the vibrations are passed on very quickly.These drift slowly through the structure, giving metals their strength and other properties.
As the metal is heated, the free electrons closest to the heat source are heated.
Join The Discussion
Comments ( 4 )
Related Questions on Heat and Mass Transfer
The heat is transferred by conduction, convection and radiation in
A. Melting of ice
B. Boiler furnaces
C. Condensation of steam in condenser
D. None of these
Heat is transferred by all three modes of transfer, viz. conduction, convection and radiation in
A. Electric heater
B. Steam condenser
C. Boiler
D. Refrigerator condenser coils
The radiation emitted by a black body is known as
A. Black radiation
B. Full radiation
C. Total radiation
D. All of these
in metals 70% conduction occurred due to free electrons rest of heat is conducted by molecular vibrations.
I think for electricity conduction there should be free electron, where as for heat conductivity it depend upon how closely structures are packed.
They contain free electrons
Option should be c