Fuels and Combustion Fusion point of coal ash increases with increase in its __________ content. Iron sulphate Lime and magnesia All of these Iron silicate Iron sulphate Lime and magnesia All of these Iron silicate ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal. Gasification Carbonisation Coalification Oxidation Gasification Carbonisation Coalification Oxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke made in narrower by-product coke ovens (as compared to wider ovens) is Less reactive Smaller in size All of these Stronger Less reactive Smaller in size All of these Stronger ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Compound coke ovens are those which can be heated by Both B and C Both steam and electrical power Lean gas (e.g., B.F. gas) Rich gas (e.g., coke oven gas) Both B and C Both steam and electrical power Lean gas (e.g., B.F. gas) Rich gas (e.g., coke oven gas) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Beehive coke oven 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 Takes 2-3 days for coking of coal but requires no external fuel for heating Facilitates by-products recovery ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal is done to reduce the Adhering impurities Inherent impurities Mineral matter Both B and C Adhering impurities Inherent impurities Mineral matter Both B and C ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS