- What is the purest form of coal?
- Which gas is produced when coal is burnt in air?
- Which of the following is obtained from coal?
- What are the products obtained by the destructive distillation of coal?
- Why is coal still used?
- Is Coke cleaner than coal?
- How is coal made from steel?
- What are the three useful products of coal?
- Which is the best type of coal?
- Is Coke better than coal?
- Is petrol obtained from coal tar?
- Which of the following is not obtained from coal?
- What are the products of coal?
- Is coke obtained from coal?
- What is Coke and its uses?
- How is coal gas obtained where is it used?
- How is coal tar formed?
- What is coal tar made of?
What is the purest form of coal?
anthracite coalHigh grade (HG) and ultra high grade (UHG) anthracite are the highest grades of anthracite coal.
They are the purest forms of coal, having the highest degree of coalification, the highest carbon count and energy content and the fewest impurities (moisture, ash and volatiles)..
Which gas is produced when coal is burnt in air?
carbonic oxide (CO)If, when burning coal, it is not completely saturated with oxygen, a gas called carbonic oxide (CO) is formed With one pound of oxygen to one of carbon, which is not so ejpansive, consequently a great loss of heat is experienced.
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.
What are the products obtained by the destructive distillation of coal?
The process breaks up or ‘cracks’ large molecules. Coke, coal gas, gas carbon, coal tar, ammonia liquor, and coal oil are examples of commercial products historically produced by the destructive distillation of coal.
Why is coal still used?
That’s largely because of the shale gas revolution, which suddenly made natural gas cheaper than coal for generating electricity. … Global coal use continues to rise, especially in developing economies. About 38 percent of global electricity comes from coal, and in many countries it’s a mainstay for industrial uses, too.
Is Coke cleaner than coal?
What is the difference between coal and coke fuel? Coal is a shiny, black fossil fuel that contains impurities, emits smoke when burned, and produces less heat than coke. Coke is a dull, black byproduct of coal that burns hotter and cleaner.
How is coal made from steel?
Almost all metallurgical coal is used in coke ovens. The coking process consists of heating coking coal to around 1000-1100ºC in the absence of oxygen to drive off the volatile compounds (pyrolysis). This process results in a hard porous material – coke.
What are the three useful products of coal?
Name three useful products of coal.coal gas.coal tar.coke.
Which is the best type of coal?
What are the types of coal?Anthracite: The highest rank of coal. … Bituminous: Bituminous coal is a middle rank coal between subbituminous and anthracite. … Subbituminous: Subbituminous coal is black in color and dull (not shiny), and has a higher heating value than lignite.More items…•
Is Coke better than coal?
Coke is a better fuel because coke produces more heat on burning as compared to coal. Coke has higher calorific value than coal. When equal masses of coke and coal are bunt, coke produces more heat. Also when coke is burnt, smoke is not obtained whereas coal produces smoke on coal.
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.
Which of the following is not obtained from coal?
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.
What are the products of coal?
Coal And Its By – Products: Coke, Tar And Coal GasCoke: Coke is a high-carbon product obtained by the destructive distillation of coal. … Uses of Coke:Coal tar: It is obtained as a by-product in the process of making coke.More items…
Is coke obtained from coal?
By distilling bituminous coal in retorts to obtain gas for illumination, or by burning it in kilns or pits, the residue left behind is called coke, which is simply coal charcoal, and is nearly pure carbon.
What is Coke and its uses?
Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.
How is coal gas obtained where is it used?
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. … Coal tar and coke (qq. v.) are obtained as by-products.
How is coal tar formed?
Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature. It is a black, viscous liquid composed primarily of a complex mixture of condensed-ring aromatic hydrocarbons.
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).