Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant? Ammonium nitrate Ammonium phosphate None of these Ammonium sulphate TRUE ANSWER : ? YOUR ANSWER : ?
Which will have the least volatile matter and hence will be the most difficult to ignite? Aanthracite Semi-bituminous coal Bituminous coal Coke TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following fuel gases has the highest calorific value ? Natural gas Sewage gas Liquefied petroleum gas (LPG) Coal bed methane (CBM) TRUE ANSWER : ? YOUR ANSWER : ?
Abrasion index of blast furnace coke should be around __________ percent. 20 35 55 80 TRUE ANSWER : ? YOUR ANSWER : ?
Ignition temperature decreases progressively from anthracite to lignite, because Moisture content increases Ash content increases Volatile matter content increases Carbon content decreases TRUE ANSWER : ? YOUR ANSWER : ?
When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal. Gasification Coalification Oxidation Carbonisation TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Low forced draught and fuel bed temperature All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur TRUE ANSWER : ? YOUR ANSWER : ?
Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in Either A or C without gain or loss of heat Oxygen Air Either A or B TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is unsuitable fuel for producer gas manufacture? Anthracite Coal having high fusion point of its ash Coal having low fusion point of its ash Coke TRUE ANSWER : ? YOUR ANSWER : ?
If CO₂ is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as O₂ CO SO₂ N₂ TRUE ANSWER : ? YOUR ANSWER : ?