Fuels And Combustion MCQs | Page - 19

Q. 181) Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the

Q. 182) Bright coal

Q. 183) For every 10% increase in the excess air; the fuel consumption increases by __________ percent.

Q. 184) Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C. 

Q. 185) Fixed carbon in coal is defined as

Q. 186) The most matured coal out of the following is

Q. 187) Yield of charcoal in high temperature carbonisation of wood is about __________ percent.

Q. 188) 'Fuel' can be defined as a substance which produces heat by

Q. 189) Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm.

Q. 190) Caking coal is desirable for