WorksheetsCarbon and its compounds
Total questions: 10
Worksheet time: 10mins
In combined state, carbon occurs as
coal
diamond
graphite
petroleum
A crystalline form of carbon is
lampblack
gas carbon
sugar
fullerene
Diamond is used for
making the electrodes of electric furnaces.
making crucible for melting metals.
cutting and drilling rocks and glass.
making carbon brushes for electric motors.
The type of coal with least carbon %
peat
lignite
bituminous
anthracite
(a) is present in both living and non-living things
The tendency of an element to exist in two or more forms but in the same physical state is called (a) .
____________ and ____________ are the two major crystalline allotropes of carbon.
(a)
(a) is the hardest substance that occurs naturally.
The name ‘carbon’ is derived from the Latin word (a)
Water gas
CO and H2
CO2 and H2O
H2O vapours
none of the above
