Related Questions

A coal with high __________ content will ignite most easily.
A Hydrogen
B Oxygen
C Volatile matter
D Fixed carbon
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
Which will have the least volatile matter and hence will be the most difficult to ignite?
A Bituminous coal
B Coke
C Semi-bituminous coal
D Aanthracite
Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.
A 15 to 25
B 35 to 45
C 55 to 75
D 75
Correct synonym of the word 'ignite'---
A kindle
B to set fire
C to burn
D to burn fire
Correct synonym of the word " ignite" is
A Kindle
B to set fire
C to burn
D to burn fire
A coal containing very high percentage of durain is called __________ coal.
A Bright
B Splint
C Non-banded
D Boghead
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
A good coking coal should have high __________ content.
A Ash
B Sulphur & phosphorus
C Moisture
D None of these
A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon
A Is less liable to spontaneous combustion on storage
B Is more difficult to ignite and produces a shorter flame
C Requires smaller combustion space and less secondary air
D None of these

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