Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. None of these < 37% >71% In between 37 & 71% None of these < 37% >71% In between 37 & 71% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms. 1 to 2 3 to 4 5 to 15 20 to 40 1 to 2 3 to 4 5 to 15 20 to 40 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene is removed from coke oven gas by Adsorbing on bog iron bed Scrubbing with wash oil (a petroleum product) Absorbing in vetro-coke solution None of these Adsorbing on bog iron bed Scrubbing with wash oil (a petroleum product) Absorbing in vetro-coke solution None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of natural gas is about __________ kcal/Nm³. 2500 35, 000 25, 000 10, 000 2500 35, 000 25, 000 10, 000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which will have the least volatile matter and hence will be the most difficult to ignite? Aanthracite Coke Bituminous coal Semi-bituminous coal Aanthracite Coke Bituminous coal Semi-bituminous coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A travelling grate stoker is meant for the efficient burning of __________ coal. High ash Non-caking Caking Pulverised High ash Non-caking Caking Pulverised ANSWER DOWNLOAD EXAMIANS APP
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