Which of the following is a green house gas?
Co2
CH4
H2
N2
Which is used in making type writer ribbons?
Coke
Charcoal
Black carbon
Carbon black
Diamond is _______ conductor of electricity.
Good
Bad
Semi conductor
Conductor
In the combined state, carbon exist as
Minerals
Diamond
Graphite
Coal
Which substance is used as a reducing agent in metallurgy?
CO2
Lampblack
Fullerene
What is called marsh gas?
Ethane
Methane
Propane
Butane
CO + H2O
C12H22O11
C6H12O6
H2CO3
Coal on destructive distillation gives
lamp black
None of these
