Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 17 of 47)

In Lurgi coal gasifier___________________?
A. Coking coals cannot be used
B. Low carbon conversion efficiency is achieved
C. Entrainment of solids is higher
D. Larger quantity of coal can be processed
Cannel coal__________________?
A. Is non-coking
B. Has a high volatile matter content and burns with a luminous smoky flame
C. Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is
So Named
Which of the following is not a by-product fuel ?
A. Pitch
B. Blast furnace gas
C. Petrol
D. Refinery gas
Which of the following fuel gases is heavier than air ?
A. Blast furnace gas
B. Coke oven gas
C. Natural gas
D. Water gas
Use of pulverised coal in boiler furnace provides___________________?
A. High calorific value
B. Better combustion
C. Smokeless burning
D. Less erosion on furnace walls
Lignite is ___________________?
A. A high rank coal
B. A coking coal
C. Can be used for gasification and steam generation
D. A black banded coal which burns with a non-smoky yellowish flame