ainly of methane.
5. Kerosene is not a fossil fuel.
6. Process of separation of different constituents from petroleum is called...
Write short answers:-
1. What do you mean by carbonisation?
Re
Give one example of non-exhaustible natural resources.
Name two different varities of Coal found in nature.
What is coal gas? Name its constituents.
Name two constituents of petroleum which are not used as fuel.
What is the main difference between deforestation and afforestation?
nswer the following questions:-
What are the services provided by the forests?
Answers
Answer:
Explanation:
1. The kerosene can be derived from coal, wood and oil shale and it is predominantly extracted by refining petroleum. Therefore, kerosene is definitely a fossil fuel.
2. separating the various constituents/ fractions of petroleum is known as refining.
3. Carbonisation is a particular form of that process in chemical technology called pyrolysis that is the breakdown of complex substances into simpler ones by heating. ... The term carbonisation is also applied to the pyrolysis of coal to produce coke.
4. There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy. Oil, natural gas, and coal are collectively called fossil fuels. Fossil fuels were formed within the Earth from dead plants and animals over millions of years—hence the name “fossil” fuels.
5. Peat, Lignite, Bituminous coal and Anthracite are different coal found in nature.
6. Coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide—formed by the destructive distillation (i.e., heating in the absence of air) of bituminous coal and used as a fuel. Sometimes steam is added to react with the hot coke, thus increasing the yield of gas.
7. Afforestation is defined as the planting of the forests in a land which was formerly infertile. Deforestation is defined as the depletion of the forests for human and commercial uses. It is so important that if we want life on this planet, we need trees. It is extremely harmful, for the entire environment.
8. The benefits provided by forest ecosystems include: goods such as timber, food, fuel and bioproducts. ecological functions such as carbon storage, nutrient cycling, water and air purification, and maintenance of wildlife habitat. social and cultural benefits such as recreation.