All non-metals are
poor conductor of electricity except…….
a) diamond
b) sulphur
c) graphite
d)
none of these
Which of the
following is/are poor conductor of electricity?
a) diamond
b) coal
c) graphite
d) both a and b
When you a copper metal bell with hammer, it produces a ringing sound. What is this property?
a) conductors
b) insulators
c) ductile
d) sonorous
Which one of the following is NOT sonorous?
a) diamond
b) sulphur
c) graphite
d) all of these
Uses of Metals:
A conductor, or electrical conductor, is a substance
or material that allows electricity to flow through it. In a conductor,
electrical charge carriers, usually electrons or ions, move easily from atom to
atom when voltage is applied.
Some metals are
soft. To make them harder they are mixed with small amount of metals or
non-metal. What is the resultant object?
a) suspension
b) alloy
c) compound
d) none
