Coal is amorphous carbon.
Coal is amorphous carbon:
Therefore, the given statement is true. i.e., Coal is amorphous carbon.
Choose the correct alternative :
(a) Anthracite is
(i) an inferior type of coal
(ii) a superior type of coal
(iii) the cheapest form of coal
(iv) none of the above
(b) Destructive distillation of coal yields
(i) coal tar
(ii) coal gas
(iii) coke
(iv) all of the above
(c) Lamp black is
(i) an amorphous form of carbon
(ii) a crystalline form of carbon
(iii) a pure form of carbon
(iv) a cluster of carbon atoms
(d) The process by which decayed plants slowly convert into coal is called
(i) petrification
(ii) carbonisation
(iii) carbonification
(iv) fermentation
(e) The purest form of the amorphous carbon is
(i) wood charcoal
(ii) sugar charcoal
(iii) bone charcoal
(iv) lamp black
The naturally formed amorphous form of carbon is ________
_______________ is the the purest form of amorphous carbon.
Charcoal is _____ (a crystalline/ an amorphous) form of carbon.
A. Amorphous solids possess definite and regular geometry.
B. The carbon content in lignite is more than that of peat.
C. Bituminous is the purest variety of coal.
D. Coal and coke are amorphous allotropes of carbon.