Chapter 3: Combustion of Fuels

A set of fill-in-the-blank flashcards covering destructive distillation of coal, gaseous fuels, and petroleum refining and products.

Destructive distillation of coal occurs by heating coal in the absence of air to about __°C.

1000

The products of destructive distillation of coal are coal gas, ammonium compounds, coal tar, and __.

coke

Coal tar is collected as black thick drops during distillation and is the source of many important compounds used in __.

industries

Coal gas contains hydrogen, methane, carbon monoxide and some other gases and can be used as a __.

fuel

Coke is the residue from distillation and is a non-polluting fuel used for production of gaseous fuels such as __.

water gas and producer gas

A mixture of compounds released during distillation forms ammoniacal liquor when dissolved in water; these compounds are called __.

ammonium compounds

Water gas is obtained by passing steam over hot coke and is a mixture of __ and hydrogen gases.

carbon monoxide

Petroleum means oil found in rocks and is a mixture of solid, liquid, and gaseous __.

hydrocarbons

The word petroleum is derived from petra, meaning 'rock', and oleum, meaning ''.

oil

Fractional distillation and refining: The process of converting petroleum into useful products with the help of fractional distillation is known as __.

refining

Petroleum gas (LPG) is the most commonly used domestic fuel and is used to run __.

vehicles

Gasoline (petrol) is used as a fuel in motors and is also used for __ clothes.

dry cleaning

Kerosene is used for lighting __ in villages and small towns, which is used in the absence of electricity.

petromax lamps

Light oil: Diesel is obtained from light oil and used in the __ industry.

automobile

Heavy oil is used in the production of various chemicals and to boilers and furnaces.

heat

Residue of petroleum distillation is called __.

pitch

Pitch is often wrongly called __.

coal tar

Extraction of petroleum started in 1859 from an oil well in __, USA.

Pennsylvania

Crude oil is often called __ due to its value.

black gold

Fractional distillation involves separation of substances with different __.

boiling points