A. Classified
B. Carbonised
C. Caking
D. Non-caking
Related Mcqs:
- Gross heating value of coal is ______________ the net heating value?
A. Higher than
B. Lower than
C. Same as
D. None of these - Gross heating value of coal is ______________ the net heating value?
A. Higher than
B. Lower than
C. Same as
D. Either A. or B.; depends on the type of coal - Calorific value of coal middling generated in coal washeries during washing of coal may be around _____________ Kcal/kg?
A. 1000
B. 4000
C. 6000
D. 8000 - Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an ______________ bed gasifier?
A. Entrained
B. Moving
C. Fixed
D. Fluidised - (64-132) rank coal (ASTM) means a coal with 64%___________________?
A. Fixed carbon and having a heat value of 13, 200 BTU/1b
B. Ash and a heating value of 13, 200 BTU/1b
C. Fixed carbon and a heating value of 132 BTU/1b
D. None of these - 64-132) rank coal (ASTM) means a coal with 64%___________________?
A. Fixed carbon and having a heating value around 13, 200 BTU/1b
B. Ash and heating value around 13, 200 BTU/1b
C. Fixed carbon and heating value around 132 BTU/1b
D. None of these - Prime coking coal is always blended with medium or non- coking coal before carbonisation__________________?
A. To check against its excessive swelling during heating, which may exert high pressure and
damage coke oven walls
B. Because, it alone produces unreactive coke
C. Both A. and B.
D. Neither A. nor B. - A coal containing very high percentage of durain is called ______________ coal?
A. Bright
B. Splint
C. Non-banded
D. Boghead - The liquid used for the washing of coal in an industrial coal washery is a mixture of water and ____________________?
A. Carbon tetrachloride
B. Sand (40%)
C. Mineral oil of high viscosity & specific gravity (1.6)
D. None of these - Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the ________________ of coal?
A. Hydrogenation
B. Gasification
C. Carbonisation
D. None of these
