Related Questions

Underfeed stokers work best for __________ coals high in volatile matter and with caking tendency
A Anthracite
B Lignite
C Semi-bituminous and bituminous
D All of the above
What is an internal organizational Internet that is guarded against outside access by a special security feature called a firewall (which can be software, hardware, or a combination of the two)?
A Client/server network
B Intranet
C Extranet
D Thin client
Dry powdery solid materials are transported by a __________ conveyor.
A Belt
B Bucket
C Screw
D None of these
The caking of crystals can be prevented by
A Maintaining high critical humidity
B Maintaining low critical humidity
C Coating the product with inert material
D Both A and C
Caking coals are those which
A Form lumps or masses of coke
B Burn freely
C Show little or no fusing action
D Burn completely
Caking index of a coal is a measure of its
A Abradability
B Reactivity
C Agglutinating (binding) properties
D Porosity
The bituminous coal is no caking if its carbon content is
A 78-81%
B 81-85%
C 85-90%
D 90-95%
Caking coal is desirable for
A Burning on travelling grate
B Coke making
C Burning on firebars
D All of the above
Highly caking coals
A Produce weak coke
B Produce strong coke
C May damage the coke oven walls during carbonisation
D Both B and C
Caking index of the coal blend used for the manufacture of metallurgical coke should be around
A 5
B 21
C 40
D 48

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