Fuels and Combustion Coal containing large quantity of __________ are difficult to wash. Inherent mineral matter Free impurities Ash Volatile matter Inherent mineral matter Free impurities Ash Volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm. 1000 5000 50 10000 1000 5000 50 10000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Beehive coke oven Produces coke with very poor strength Facilitates by-products recovery Takes 2-3 days for coking of coal but requires no external fuel for heating Gives larger yield of coke (around 85%) as compared to by-product ovens Produces coke with very poor strength Facilitates by-products recovery Takes 2-3 days for coking of coal but requires no external fuel for heating Gives larger yield of coke (around 85%) as compared to by-product ovens ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene is used for making All of these Unsaturated polyesters Drug intermediates e.g. β-naphthol Insecticides (e.g. moth balls) All of these Unsaturated polyesters Drug intermediates e.g. β-naphthol Insecticides (e.g. moth balls) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ignition temperature of a fuel in air is __________ that in pure oxygen. More than Less than Either more or less; depends on the type of fuel Equal to More than Less than Either more or less; depends on the type of fuel Equal to ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of preheated air for combustion of fuel in the furnace, increases the Calorific value of the fuel None of these Scale losses of the furnace stock Flame temperature Calorific value of the fuel None of these Scale losses of the furnace stock Flame temperature ANSWER DOWNLOAD EXAMIANS APP
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