Fuels and Combustion Beehive coke oven Takes 2-3 days for coking of coal but requires no external fuel for heating Facilitates by-products recovery Produces coke with very poor strength Gives larger yield of coke (around 85%) as compared to by-product ovens Takes 2-3 days for coking of coal but requires no external fuel for heating Facilitates by-products recovery Produces coke with very poor strength Gives larger yield of coke (around 85%) as compared to by-product ovens ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ prohibits the use of alcohols directly in petrol engines. Low calorific value Low octane number High cost & availability Low flash point Low calorific value Low octane number High cost & availability Low flash point ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of force moisture in coal is most disadvantageous during its Washing Pulverisation Transportation and handling Storage Washing Pulverisation Transportation and handling Storage ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen. 22.4 Nm³ All of these 32 kg 1kg mole 22.4 Nm³ All of these 32 kg 1kg mole ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Softening temperature of coal ash is a measure of the __________ of coal. Clinkering tendency Caking tendency Size stability Coking tendency Clinkering tendency Caking tendency Size stability Coking tendency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of coal resulting from bad storage conditions does not decrease its Oxygen content Caking power Hydrogen content Calorific value Oxygen content Caking power Hydrogen content Calorific value ANSWER DOWNLOAD EXAMIANS APP