A. Blast furnace coke
B. Low temperature coke
C. Anthracite coal
D. Sub-bituminous coal
Related Mcqs:
- Highly reactive coke have lower ___________________?
A. Porosity
B. Coke reactivity index (CRI)
C. Critical air blast (CAB) value
D. Both B. and C. - The gasification reaction represented by, C + H2O = CO + H2, is__________________?
A. Exothermic
B. Endothermic
C. Catalytic
D. Autocatalytic - When steam is passed over coal resulting in the endothermic reaction represent by, C + H2O = CO + H2, it is called the _______________ of coal?
A. Carbonisation
B. Oxidation
C. Coalification
D. Gasification - During combustion of coal on grate, clinker formation is increased by the___________________?
A. Use of thick fire bed
B. Low fusion point of ash (< 1100° C)
C. Use of preheated primary air
D. All A., B. & C. - The temperature at which plastic layer formation takes place during carbonisation of coal varies from ______________ °C ?
A. 100 to 150
B. 350 to 450
C. 550 to 650
D. 700 to 850 - Which of the following would require least amount of secondary air for combustion ?
A. Coke breeze containing 25% ash and 2% volatile matter
B. Anthracite containing 10% volatile matter and 8% ash
C. Bituminous coal containing 20% ash and 25% volatile matter
D. Semi-bituminous coal containing 25% ash and 20% volatile matter - Which of the following is not a ‘manufactured’ fuel ?
A. LPG
B. Coal briquettes
C. Tar
D. Colloidal fuels - Which of the following fuel gases is heavier than air ?
A. Blast furnace gas
B. Coke oven gas
C. Natural gas
D. Water gas - Which of the following gaseous fuels has the highest net calorific value (kcal/Nm3) ?
A. Producer gas
B. Carburetted water gas
C. Natural gas
D. Liquefied petroleum gas - Which of the following is a primary fuel ?
A. Blast furnace coke
B. Gasoline
C. Natural gas
D. Wood charcoal
