6. What is coke? Give its uses,
7. Give the various uses of coal tar.
8.List the various constituents of petroleum along with their uses.
9. Define the word 'refining'. Why is it necessary to refine the petroleum?
10. What do you mean by petroleum? Give the uses of two important components of petroleum
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Answers
Answer:
6. The grayish-black residue left after the destructive distillation of coal is called as coke. Coke is obtained from coal by removing moisture and other volatile matter from it. Thus, were can say :Coke= Coal- Moisture- Volatile matter
Coke is about 98% carbon
Uses of coke:
Some important uses of coke are,
1. Coke is used as a domestic fuel.
2. Coke is used as a reducing agent in metallurgical processes.
3. Coke is used for producing fuel gases such as water gas(CO+ H2) , and producer gas(CO + N2).
7. Uses of coal tar are:
1. Coal tar is used as the medication to heal itching, scaling, and flaking due skin conditions.
2. It is also used in making medicated shampoo to treat dandruff and to kill lice.
3. Soaps are made from coal tar.
4. Various phenolic coal tars have the properties of a painkiller.
5. Roads are made with the use of coal tar.
8. The different constituents and uses of petroleum are:
1. Petroleum Gas in liquid form [ LPG ] - Fuel for home and industry.
2. Petrol - Motor fuel, aviation fuel, solvent for dry cleaning.
3. Kerosene - Fuel for stoves, lamps and for jet aircrafts.
4. Diesel - Fuel for heavy motor vehicles, electric generators.
5. Lubricating oil - Lubrication.
6. Paraffin wax - Ointment, candles, vaseline...
7. Bitumen - Paints, road surfacing.
9. Petroleum refining processes are the chemical engineering processes and other facilities used in petroleum refineries (also referred to as oil refineries) to transform crude oil into useful products such as liquefied petroleum gas (LPG), gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils.
10. Literally 'rock oil,' it is a general term for crude oil and natural gas. Primary source of automotive fuels and lubricant oils, petroleum is a complex mixture of hydrocarbons and paraffins in some areas, and aromatics and cyclo-paraffins in other areas. ... Called also crude oil or mineral oil
Uses of Two components...
1. Petroleum Gas in liquid form [ LPG ] - Fuel for home and industry.
2. Petrol - Motor fuel, aviation fuel, solvent for dry cleaning.
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