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प्रश्न
Fill in the blank:
......... is the most inferior form of coal.
उत्तर
Peat is the most inferior form of coal.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
The tendency of an element to exist in two or more forms but in the same physical state is called ................
Write ‘true’ or ‘false’ against the following statement:
Wood charcoal is an important constituent of gun powder.
Name the following:
The best variety of coal.
Tick the most appropriate answer.
Fuel gases like water gas and producer gas are manufactured from
a. bone charcoal
b. wood charcoal
c. coke
d. none of these
FILL IN THE BLANK
.............. is used to make carbon brushes in dynamos.
TRUE \ FALSE
Coal can be converted to coke by destructive distillation.
State one use of each of the following:
Diamond, Graphite, Coke, Bone charcoal
How is wood charcoal a better fuel than wood?
Name the following:
The hardest naturally occurring substance.
Name the following:
A crystalline allotrope of carbon built up from a hexagonal unit.
