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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 7
21.
Which of the following is not a by-product fuel?
Producer gas
Blast furnace gas
Coke oven gas
Refinery gas
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Lignite is
a high rank coal.
a coking coal.
can be used for gasification and steam generation.
a black banded coal which burns with a non-smoky yellowish flame.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.
80 and 97
95 and 100
40 and 70
25 and 97
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Naphthalene recovered from coke oven gas is used
as moisture proof coating on fibres.
as moth balls (insecticides).
as a fuel in furnaces.
for making electrodes.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called
back draughting.
banking.
under pressurising.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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