Carbon is soluble in
Conc . H2SO4
Conc . HNO3
Conc. HCl
Conc. CH3COOH
Which is used in making type writer ribbons?
Coke
Charcoal
Black carbon
Carbon black
In Fullerenes how many carbon atoms are joined together?
4
6
60
30
In the free state, carbon exists as
Coal
Petroleum
Natural gas
CO2
Which is a good fuel?
Wood
Paper
Petrol
Diesel
...... carbon is formed when a material containing carbon is burned without enough oxygen.
Allotrophy
Amorphous
Crystalline
Catenation
Graphite is used in nuclear reactors as
Lubricant
Insulators
Moderators
As fuel
Valency of carbon in methane is
1
2
3
Diamond shines due to its
High density
High refractive index
High melting point
High value
