Q. Low temperature carbonisation of coal produces

View solution

Q. Blast furnace coke is made from coal by

View solution

Q. Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

View solution

Q. Coke oven gas is stripped of its H₂S and mercaptans content by

View solution

Q. In Lurgi coal gasifier,

View solution

Q. Mineral matter content (M) and ash content (A) in coal are approximately related as

View solution

Q. Use of pulverised coal in boiler furnace provides

View solution

Q. Deficiency of combustion air during combustion of a gaseous fuel

View solution

Q. Froth floatation is used for

View solution

Q. (64-132) rank coal (ASTM) means a coal with 64%

View solution

Q. The sequence of absorption in flue gas analysis by Orsat's apparatus is respectively

View solution

Q. Which of the following is not a 'manufactured' fuel ?

View solution

Q. Use of excess of combustion air in the combustion of fuels results in

View solution

Q. Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

View solution

Q. Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

View solution

Q. Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has

View solution

Q. The calorific value of a gas of composition CO₂ = 20%, H₂ = 50%, CH₄ = 30%, is y. If the composition of gas is changed to H₂ = 50%, CH₄ = 30%, CO₂ = 10%, N₂ = 10%, then the calorifice value will be

View solution

Q. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

View solution

Q. One kg of carbon for theoretically complete combustion requires __________ kg of air.

View solution

Q. If CO₂ is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as

View solution