Question :

Metals are good conductors of electricity because


A) they contain free electrons
B) the atoms are lightly packed
C) they have high melting point
D) All of the above

Answer : A

Description :



Related Questions - 1


Pick out the scalar quantity


A) force
B) pressure
C) velocity
D) acceleration

View Answer

Related Questions - 2


Light year is a unit of


A) time
B) distance
C) light
D) intensity of light

View Answer

Related Questions - 3


Stars appears to move from east to west because


A) all stars move from east to west
B) the earth rotates from west to east
C) the earth rotates from east to west
D) the background of the stars moves from west to east

View Answer

Related Questions - 4


It is more difficult to walk on a sandy road than on a concrete road because


A) sand is soft and concreter is hard
B) the friction between sand and feet is less than that between concrete and feet
C) the friction between sand and feet is more than that between concrete and feet
D) the sand is grainy but concrete is smooth

View Answer

Related Questions - 5


Pa(Pascal) is the unit for


A) thrust
B) pressure
C) frequency
D) conductivity

View Answer