IndiaBIX

Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 4
1.
__________ process is meant for direct hydrogenation of coal to produce liquid fuel.
Fischer-Tropsch
Bergius
Lurgi
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Producer gas containing least amount of tar is produced by the
partial combustion of coal.
partial combustion of large size (< 50 mm) coke.
high pressure gasification of coal (e.g. in Lurgi gasifier).
atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Air/gas ratio for complete combustion will be the highest for
LPG
gobar gas
coke oven gas
carburetted water gas
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Beehive coke oven
facilitates by-products recovery.
takes 2-3 days for coking of coal but requires no external fuel for heating.
gives larger yield of coke (around 85%) as compared to by-product ovens.
produces coke with very poor strength.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Turndown ratio of a gas burner is equal to the
maximum to minimum heat input ratio.
maximum to minimum permissible gas flow rate.
both (a) & (b).
minimum to maximum heat input ratio.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers