Related Questions

A gram of fat contains 9 calories. An 1,800-calorie diet allows no more than 20% calories from fat. How many grams of fat are allowed in that diet?
A 90 g
B 360 g
C 200 g
D 40 g
A gram of fat contains 9 calories. An 1,800 calorie diet allows no more than 20% calories from fat. How many grams of fat are allowed in that diet?
A 40 g
B 90g
C 200 g
D 360 g
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
Very __________ coals are completely devoid of cokability i.e, it is non coking.
A Young
B Mature
C Both A & B
D Neither A nor B
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
Assam coals suffers mainly from the disadvantage of high __________ content.
A Ash
B Volatile matter
C Sulphur (4-6%)
D Moisture
High ash coals
A Are soft & friable (poor strength and size stability)
B Require longer time of carbonisation as ash offers resistance to heat transfer
C Produce larger quantity of coke oven gas
D None of these
Coals used for the generation of producer gas should have
A High caking index
B Low fusion point of ash
C High volatile matter content
D Very low ash content (8-10%)
Which of the following coals has the highest calorific value?
A Anthracite coal
B Bituminous coal
C Lignite
D Peat
Which of the following varieties of coals is mostly used in steam boilers?
A Non-coking bituminous coal
B Brown coal
C Peat
D None of the above

Next steps