define coal coal gas coal tar
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Answer:
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. It may be applied to the affected area to treat psoriasis and seborrheic dermatitis (dandruff). It may be used in combination with ultraviolet light therapy.
Answer:
Coal tar is a thick black liquid which is a by-product of the production of coal gas and coke. It contains benzene, naphthalene, phenols, aniline, and many other organic chemicals. Coal tar is used for medical and industrial purposes. However, coal is also known as cutar, balnetar, liquor carbonis detergens, liquor picis carbonis, etc.
Properties of Coal Tar
The following are the properties of coal tar :
Coal tar is black in color.
It’s a semi-solid and semi-liquid in nature and is less permeable.
Its density is very thick and It has a peculiar smell.
Tar is insoluble in nature which means that it can’t dissolve in water.
It has a boiling point of two hundred to two hundred and fifty-degree celsius.
Its a fuel resistant and has more temperature susceptible than asphalt cement.
Coal gas is a mixture of gases i.e. hydrogen, methane, carbon monoxide and volatile hydrocarbons procured by the destructive distillation of coal. It is a flammable gas and is made from coal which supplied via a piped system and is obtained from coal in the absence of air and contains nitrogen and carbon dioxide.
Uses of coal gas
The following are the uses of coal gas:
Coal gas is used in lighting.
The gas is also used for heating.
Most often than not many people use this gas for cooking.
It is used as a fuel
Coal gas is also used as an illuminant.
Formation of Coal Gas
Coal gas is procured from the distillation of soft coal and is a by-product of coke. It does not have any fixed composition. Most of the coal gas consists of hydrogen and methane with small amounts of other hydrocarbons, carbon monoxide (a poisonous gas), carbon dioxide, and nitrogen.
Explanation:
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