Purity of coke means that, it is high in carbon and low in Ash Moisture Volatiles Iron TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a rich fuel gas? Coal gas from underground gasification of coal None of these Producer gas Refinery gases TRUE ANSWER : ? YOUR ANSWER : ?
The cooling medium used in dry quenching of coke is Air Carbon dioxide Phenolic water Nitrogen TRUE ANSWER : ? YOUR ANSWER : ?
The advantage of firing pulverised coal in the furnace lies in the fact, that it Permits the use of low fusion point ash coal Permits the use of high ash content coal All of these Accelerates the burning rate and economises on fuel combustion TRUE ANSWER : ? YOUR ANSWER : ?
Low temperature carbonisation Is mainly for producing the smokeless domestic coke Produces less quantity of tar than high temperature carbonisation Is meant for the production of 'metallurgical coke' Produces higher quantity of gas than high temperature carbonisation TRUE ANSWER : ? YOUR ANSWER : ?
The calorific value of L.D. converter gas is about __________ Kcal/Nm³ . 800 4500 1800 10000 TRUE ANSWER : ? YOUR ANSWER : ?
A good coking coal should have high __________ content. None of these Ash Moisture Sulphur & phosphorus TRUE ANSWER : ? YOUR ANSWER : ?
Low temperature oxidation of coal during storage does not decrease its Caking power Oxygen content None of these Calorific value TRUE ANSWER : ? YOUR ANSWER : ?
Natural draught produced by a chimney depends upon the Height of the chimney Neither A nor B Both A & B Density of the chimney gases TRUE ANSWER : ? YOUR ANSWER : ?
Presence of nitrogen in combustion air does not reduce the Any of the above Flue gas temperature Flame temperature Amount of heat liberated TRUE ANSWER : ? YOUR ANSWER : ?