Fuels and Combustion

A. More explosive and inflammable
B. Less poisonous
C. Lighter
D. All A., B. and C.

A. 2CO ↔ C + CO2
B. CO + H2O ↔ CO2 + H2
C. C + H2O ↔ CO + H2
D. C + 2H2O ↔ CO2 + 2H2

A. 1,800
B. 3,200
C. 5,400
D. 10,200

A. Higher calorific value at constant volume
B. Gross calorific value at constant pressure
C. Lower calorific value at constant pressure
D. Net calorific value at constant volume

A. Silica gel
B. Diatomaceous earth
C. Basalt
D. Bog iron (i.e., moist ferric hydroxide)

A. Coal
B. Kerosene
C. Natural gas
D. Furnace oil

A. 1100
B. 1250
C. 1350
D. 1400

A. 10,000
B. 2,500
C. 25,000
D. 35,000

A. Decrease in its calorific value
B. Increase in its strength
C. Brittleness of steel made by using it
D. None of these

A. Low ignition temperature
B. Very little ash content
C. High fusion point of its ash
D. Low adiabatic flame temperature