Lead pencil contains
Lead chloride
Carbon
Graphite
Diamond
Diamond shines due to its
High density
High refractive index
High melting point
High value
Amorphous form of Carbon is
Coke
None of these
Which substance is used as a reducing agent in metallurgy?
CO2
Lampblack
Fullerene
Which doesn't show allotropy?
Sulphur
Phosphorous
Mercury
Graphite is used in nuclear reactors as
Lubricant
Insulators
Moderators
As fuel
Which is a good fuel?
Wood
Paper
Petrol
Diesel
