Question

The material A is a fossil fuel which is extracted from the earth. It is said to be formed
from the buried large land plants by a very slow process B. When A is heated in the
absence of air in a process called C.then it gives three products D,E and F.The product
D is used as a reducing agent in the extraction metals, the product E is used as an
industrial fuel whereas the product F has been traditionally used metalling the roads.
i. Name A, B and C?
ii. What are i).D ii). E and iii) F ​

Answer 1

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A is a fossil fuel extracted from the earth which means there is two possibilities: Coal / Petroleum. But then it's given that it is made from the dead large land plants, hence A = Coal

B is a very very slow process through which coal is made from the dead and decaying matter buried inside the earth. Since the carbon inside the living dead matter is getting converted to coal, the process is known as B = Carbonisation.

C is the process by which the coal is heated in the absence of air to obtain various products. Hence, C = Destructive Distillation.

D is pure coal obtained which is also used as a reducing agent in the extraction metals. It is known as D = coke.

E is a industrial fuel obtained during the process. It is Alos used in the manufacturing of paints, dyes and other chemicals. E = Coal gas

F is traditionally used metalling the roads. You might have experienced the pungent irritating smell of F in newly made roads. Hence, F = Coal tar.

Answer 2

Answer:

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A. Coal

It is form from Bedrock part of rock which is a fossil fuel extracted from the earth. It is formed when the buried large land plants called humus. Therefore coal is correct answer.

B . Carbonization

It is a slow process in which coal is made from the dead plant using the process carbonization.

C. Destructive distillation

It is the process of making coal in which coal is heated on the absence of air.

D. Coke

It is the only pure coal which is extracted from metal which is used as reducing agent. It is grey in colour.

E. Coal gas

It is the industrial fuel which is called coal gas. It is made from coal.

F. Coal tar

It is used in metalling road and bridge. It smell beautiful and this is the proof of new road.