Which of the following is not obtained from coal? Answer. (d) CNG (Compressed Natural Gas) is not obtained from coal. Note :Natural gas is formed under the earth by the decomposition of vegetable matter lying under water.
Which of the following is obtained from coal?
Naphthalene balls used to repel moth and other insects are also obtained from coal tar. Note: These days bitumen a petroleum product is used in place of coal tar for metalling the roads. (3) Coal Gas: Coal gas is mainly a mixture of hydrogen, methane and carbon monoxide.
Is coal tar the purest form of carbon?
Coal tar and coal gas contain more impurities than coke. Hence, option (a) is correct. Note: Actually purest form of carbon is diamond because the composition of the diamond is homogeneous and is consistent throughout but among the given options coke is purest.
Is coal found in petroleum belt?
О Coal, petroleum and natural gas are fossil fuels. … О Coke, coal tar and coal gas are the products of coal. О Petroleum gas, petrol, diesel, kerosene, paraffin wax, lubricating oil are obtained by refining petroleum. О Coal and petroleum resources are limited.
Which of the following fuels is obtained after the processing of coal in industries?
Coal gas. Coal gas is obtained during the processing of coal to get coke. It is used as a fuel in many industries situated near the coal processing plants.
Is coke obtained from coal tar?
Coal tar: It is obtained as a by-product in the process of making coke. Though its colour is the same as coke, tar is a highly viscous liquid.
Is petrol obtained from coal tar?
Clean liquid fuel was produced from the catalytic hydrogenation of coal tar using two serial fixed beds. … The analysis results of the products indicated that raw coal tar could be promisingly upgraded by catalytic hydrogenation in the serial fixed beds.25 мая 2012 г.
Is Coke pure form of carbon?
Coke is an almost pure form of carbon. The calorific value (heat energy produced when a fuel is burnt) of coke is about 56,000 kilojoules/kilogram.
What is coal tar made of?
Coal tar is a thick dark liquid which is a by-product of the production of coke and coal gas from coal. It has both medical and industrial uses. Medicinally it is a topical medication applied to skin to treat psoriasis and seborrheic dermatitis (dandruff).
Which product of heating coal in the absence of air is almost pure carbon?
Is Coal still being formed?
The process of coal formation is still taking place today, says Bailey. “The precursor to coal is called peat, and that is just uncompressed plant matter.” Peat accumulates in wet swampy environments known as mires, and that process is taking place today in areas such as Indonesia and even the Antiplano in the Andes.
How is coal formed?
Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.
Which is most green as fuel?
Biodiesel and bioethanol are the most common, viable alternatives and infinite green fuels that can be used in internal combustion engine. … The candidates as green fuels have the potential to significantly reduce the greenhouse gas emissions by as much as 30% from their combustion in internal combustion engine.
Which gas is produced when coal is burnt in air?
carbonic oxide (CO)
Why Coke is not used as fuel?
The term means a product similar to coal and mined the same way. Coal is cheaper and that is why it is used more often. … Coke is cleaner and other methods should be looked into before coal and oil run out.
Is Coke a primary fuel?
coke,charcoal etc. Answer: Primary Fuels are the natural Fuel. … Fuel which we get from natural resources are primary fuels while artificial fuels are Secondary fuels .