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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 9
21.
Calorific value of tar is about __________ Kcal/kg.
8800
12000
5000
16000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Efficiency of the combustion of a fuel is judged by the __________ the flue gas.
%of CO2 in
% of O2in
temperature of
colour of
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm.
50
1000
5000
10000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Rate of low temperature oxidation of coal due to bad storage conditions
decreases with increase in surface area.
does not vary with increase in surface area.
is more for low volatile coal compared to high volatile coal.
is accelerated by storage in large heaps with small surface to volume ratio.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Pick the odd man out.
Briquettes
Wood
Oil gas
Pitch creosote mixture
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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