IndiaBIX

Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 9
31.
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 reminder going to CO, the Orsat analysis in volume percent is
CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60
CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02
CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2:72.06
CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Which of the following would require maximum amount of % excess air for complete combustion ?
Coke oven gas
Furnace oil
Pulverised coal
Lump coal (fixed on chain grate).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the
incomplete combustion.
complete combustion.
high oxygen in flue gas.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain
CO
CO2
H2O
both(b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Low temperature oxidation of coal is accelerated by the
storage in large heaps.
storage in compressed piles.
absence of porous or friable particles.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers