Fussain Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation All of these Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal Is friable, charcoal like substance TRUE ANSWER : ? YOUR ANSWER : ?
Adiabatic flame temperature of a fuel is dependent on the initial temperature of Air Fuel Both A & B Neither A nor B TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following has the highest gross calorific value? Oil refinery gas Carburetted water gas Coke oven gas Blast furnace gas TRUE ANSWER : ? YOUR ANSWER : ?
Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm³ /ton of dry coal. 500 750 60 160 TRUE ANSWER : ? YOUR ANSWER : ?
Washing of coal Controls its ash fusibility and increases its calorific value All of these Improves its coking properties Reduces its sulphur and ash content TRUE ANSWER : ? YOUR ANSWER : ?
Natural draught produced by a chimney depends upon the Height of the chimney Both A & B Neither A nor B Density of the chimney gases TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following oil gasification processes is non-catalytic? Onia-Gegi process Segas process Semet-Solvay process Steam reforming of naphtha TRUE ANSWER : ? YOUR ANSWER : ?
In low temperature carbonisation of coal, the Yield of tar is about 3% of dry coal Volatile matter in coke is zero Temperature maintained is 700°C Yield of coke oven gas is 290 Nm³ /ton dry coal TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always Unpredicatable > 1 1 TRUE ANSWER : ? YOUR ANSWER : ?
The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be 42.9 27.6 47.3 23 TRUE ANSWER : ? YOUR ANSWER : ?