Coke oven gas compared to blast furnace gas is________________?
A. More explosive and inflammable
B. Less poisonous
C. Lighter
D. All A., B. and C.
Fuels and Combustion
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction ?
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction ?
A. 2CO ↔ C + CO2
B. CO + H2O ↔ CO2 + H2
C. C + H2O ↔ CO + H2
D. C + 2H2O ↔ CO2 + 2H2
Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about ______________ Kcal/Nm3?
Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about ______________ Kcal/Nm3?
A. 1,800
B. 3,200
C. 5,400
D. 10,200
Calorific value as determined by bomb calorimeter is the__________________?
Calorific value as determined by bomb calorimeter is the__________________?
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
Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant ?
Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant ?
A. Silica gel
B. Diatomaceous earth
C. Basalt
D. Bog iron (i.e., moist ferric hydroxide)
Which of the following fuels has the highest calorific value per unit mass (kcal/kg) ?
Which of the following fuels has the highest calorific value per unit mass (kcal/kg) ?
A. Coal
B. Kerosene
C. Natural gas
D. Furnace oil
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?
A. 1100
B. 1250
C. 1350
D. 1400
The calorific value of natural gas is about ______________ kcal/Nm3?
The calorific value of natural gas is about ______________ kcal/Nm3?
A. 10,000
B. 2,500
C. 25,000
D. 35,000
High amount of sulphur and phosphorous in coke causes ____________________ ?
High amount of sulphur and phosphorous in coke causes ____________________ ?
A. Decrease in its calorific value
B. Increase in its strength
C. Brittleness of steel made by using it
D. None of these
A coal containing high amount of volatile matter will have__________________?
A coal containing high amount of volatile matter will have__________________?
A. Low ignition temperature
B. Very little ash content
C. High fusion point of its ash
D. Low adiabatic flame temperature