Fuels and Combustion

A. Aromatic compounds
B. Aliphatic compounds
C. Paraffins
D. Olefins

Submitted by: Muhammad Mutsadiq Umer

A. Tar
B. Sulphide Coke
C. Coke Oven Gas
D. Pulverised coke

Submitted by: Muhammad Mutsadiq Umer

A. LPG is also used as fuel for automobiles & small furnaces and for cutting & welding of
metals
B. The minimum temperature, at which a petroleum oil vapor catches fire and continues to burn,
is called its flash point
C. Each ton of petroleum oil on distillation produces about 30-50 Nm3 of gas
D. Maximum yield of naphthalene is obtained on distillation of crude oil

A. High concentration of oxygen in flue gas means high stack loss
B. Gaseous fuels require the least % excess air for complete combustion
C. The ratio of fixed carbon to volatile matter percentage in coal is called its ‘fuel ratio’
D. Calorific value of natural gas is more than that of LPG

A. Briquettes
B. Wood
C. Oil gas
D. Pitch creosote mixture

A. 10
B. 25
C. 50
D. 80

A. Blast furnace gas
B. Coke oven gas
C. Sewage gas
D. Natural gas

A. Maximum to minimum heat input ratio
B. Maximum to minimum permissible gas flow rate
C. Both A. & B.
D. Minimum to maximum heat input ratio

A. Gobar gas
B. Refinery gas
C. Converter gas
D. Blast furnace gas

A. More than
B. Less than
C. Equal to
D. Either more or less; depends on the type of fuel