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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 8
1.
The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen.
lower than
higher than
same as
not related to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Which of the following gaseous fuels has the highest net calorific value (kcal/Nm3)?
Producer gas
Carburetted water gas
Natural gas
Liquified petroleum gas
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Which of the following is coking ?
Vitrain
Fussain
both (a) & (b)
Neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Undercharging of coal in the by-product coke ovens results in
decrease in the c.v. of coke oven gas.
increase in its throughput.
increase in the c.v. of coke oven gas.
no change in the c.v. of coke oven gas.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
During the carbonisation of coal
all tar is evolved at < 600°C.
evolution of H2 and formation of methane and aromatics occur at > 700°C.
hard semi-coke starts shrinking at 600°C.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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