Amorphous form of Carbon is
Graphite
Diamond
Coke
None of these
In graphite bonding between carbon atom is
Covalent
Ionic
Coordinate
Dative
Which is a good fuel?
Wood
Paper
Petrol
Diesel
In the free state, carbon exists as
Coal
Petroleum
Natural gas
CO2
Percentage of methane in bio gas is
85%
65%
56%
58%
In the combined state, carbon exist as
Minerals
Which is used in making type writer ribbons?
Charcoal
Black carbon
Carbon black
Diamond shines due to its
High density
High refractive index
High melting point
High value
