Chemistry MCQS for Class 10
Coal tar contains compounds
Phenol
All
Benzene
Toluene
The strong heating of coal in retoris in the absence of air is called.
Destructive distillation
Sublimation
Roasting
Fractional distillation
The general formula of alkane is
CnH2n
CnH2n+2
CnH2n-2
CnH2n+1
Main component of natural gas is
Propane
Methane
Propene
Butane
General formula of Alkynes is.
CnH2n+2
CnH2n-2
C11H2n-2
C6H2n-2
Alkyl radical is derivative of
All
Alkane
Alkene
Alkyne
Which is the main component of natrual gas.
Charcoal
Propane
Ethane
Methane
What is the percentage of carbon in anthracite?
90%
70%
80%
60%
The % age of carbon is lignite is
70
90
60
80
Petroleum is refined by:
simple distillation
destructive distillation
fractional distillation
dry distillation
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