The process of conversion of wood into coal is called _______________ (colonisation/ carbonisation)
The process of conversion of wood into coal is called carbonisation.
The slow process by which the large land plants and trees buried deep under the earth have become coal is called :
(a) carbonation
(b) carburation
(c) carbonisation
(d) carbocation
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
_______ is a slow process of conversion of wood into coal.
In the conversion of wood into coal, it is first converted into a spongy material called (a)_______, then (b) __________ and finally (c) ____________.