A. Is present upto 1-2%
B. Comes from protein in parent vegetable matter
C. Is recovered as ammonia during its carbonisation
D. All A., B. and C.
Related Mcqs:
- Nitrogen present in the flue gas is determined in the Orsat apparatus by absorbing it in_____________________?
A. KOH
B. Ammoniacal cuprous chloride
C. Pyrogallol solution
D. None of these - A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is_________________?
A. CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60
B. CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02
C. CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2:72.06
D. CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74 - Presence of nitrogen in combustion air does not reduce the ____________________?
A. Amount of heat liberated
B. Flame temperature
C. Flue gas temperature
D. Any of the above - Percentage of nitrogen in blast furnace gas may be around__________________?
A. 5
B. 25
C. 55
D. 80 - Calorific value of blast furnace gas is around _____________ KCal/Nm3?
A. 850
B. 1800
C. 4200
D. 6500 - High excess air in combustion of fuels results in____________________?
A. Increased fuel consumption
B. Incomplete combustion
C. Smoky flame
D. None of these - Traces of tar fog present in the coke oven gas is removed by_________________?
A. Cyclone separator
B. Wet packed scrubber
C. Electrostatic precipitator
D. Washing with monoethanolamine - Low temperature oxidation of coal during storage does not decrease its__________________?
A. Oxygen content
B. Caking power
C. Calorific value
D. None of these - ‘Fat’ coal means a coal having ___________________?
A. Low calorific value
B. High volatile matter
C. Low ash content
D. Non smoking tendency - Which of the following is not a by-product fuel ?
A. Pitch
B. Blast furnace gas
C. Petrol
D. Refinery gas
