A. Moisture, ash, sulphur & volatile matter
B. Moisture, volatile matter, ash & fixed carbon
C. Moisture, sulphur, nitrogen & fixed carbon
D. None of these
Related Mcqs:
- Coal is heated in presence of air to a temperature of about _______________ °C, while determining its ash content for proximate analysis?
A. 500
B. 750
C. 950
D. 1100 - Coal is heated in absence of air for 7 minutes at a temperature of about ______________ °C, during its volatile matter determination for proximate analysis?
A. 550
B. 750
C. 950
D. 1150 - Ultimate analysis of coal determines its _______________ content?
A. Carbon, hydrogen, nitrogen & sulphur
B. Carbon, ash, sulphur & nitrogen
C. Carbon, sulphur, volatile matter & ash
D. Carbon, volatile matter, ash & moisture - The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?
A. 1
B. < 1
C. > 1
D. Unpredictable - Mineral matter content (M) and ash content A. in coal are approximately related as _______________?
A. M = 1.1A
B. M = A
C. M = 1.5A
D. M = 2A - With increase in the oxygen content of the coal, its ______________ decreases?
A. Calorific value
B. Caking power
C. Both A. & B.
D. Neither A. nor B. - 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 - A good coking coal should have high ______________ content?
A. Ash
B. Sulphur & phosphorus
C. Moisture
D. None of these - 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 - A coal containing very high percentage of durain is called ______________ coal?
A. Bright
B. Splint
C. Non-banded
D. Boghead
