Which of the following gaseous fuels is likely to have the highest gross calorific value? Sewage gas Natural gas LPG Producer gas TRUE ANSWER : ? YOUR ANSWER : ?
Traces of tar fog present in the coke oven gas is removed by Electrostatic precipitator Wet packed scrubber Cyclone separator Washing with monoethanolamine TRUE ANSWER : ? YOUR ANSWER : ?
Yield of blast furnace gas is about __________ Nm³ /ton of pig iron. 300 2000 5000 10000 TRUE ANSWER : ? YOUR ANSWER : ?
Artificial draught produced by a fan can be controlled by the Variation in the pitch of the fan blades All of these Speed of the fan Damper TRUE ANSWER : ? YOUR ANSWER : ?
Prime coking coal is always blended with medium or non- coking coal before ear-bonisation To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B Because, it alone produces unreactive coke Both A & B TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following fuel gases has the highest calorific value ? Liquefied petroleum gas (LPG) Natural gas Coal bed methane (CBM) Sewage gas TRUE ANSWER : ? YOUR ANSWER : ?
Coking time in a commercial high temperature coal carbonisation plant is about __________ hours. 18 6 28 36 TRUE ANSWER : ? YOUR ANSWER : ?
Calorific value of bituminous coal may be around __________ Kcal/kg. 20000 6500 500 1500 TRUE ANSWER : ? YOUR ANSWER : ?
Dry air required to burn 1 kg of carbon completely may be around __________ kg. 11 38 2 20 TRUE ANSWER : ? YOUR ANSWER : ?