Question

Name the following
(a) Variety of coal with lowest carbon percentage
(b) Slow process of formation of coal
(c) Constituent of petroleum making ointments and Vaseline
(d) Domestic fuel which can be transported through pipes​

Answer 1

Answer:

(a)Lignite: Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.

(b) Coal was formed by the decomposition of large land plants and trees buried under the Earth about 300 million years ago. ... The slow process by which the dead plants buried under the Earth have become coal is called as carbonisation.

(c) Coal And Petroleum. ... (i) Petrol : It is used as a motor fuel, aviation fuel. It is also used for dry cleaning. (ii) Paraffin wax : It is used for making ointments, candles, vaseline etc.

(d) Hydrogen. Hydrogen pipeline transport is a transportation of hydrogen through a pipe as part of the hydrogen infrastructure. Hydrogen pipeline transport is used to connect the point of hydrogen production or delivery of hydrogen with the point of demand, with transport costs similar to CNG, the technology is proven.

Answer 2

Explanation:

a) Lignite coal

b) carbonisation

c) Petrol : It is used as a motor fuel, aviation fuel. ... It is also used for dry cleaning. (ii) Paraffin wax : It is used for making ointments, candles, vaseline etc.

d) hydrogen