Caking coal is desirable for Burning on firebars Burning on travelling grate All of these Coke making TRUE ANSWER : ? YOUR ANSWER : ?
Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. 750 1100 500 950 TRUE ANSWER : ? YOUR ANSWER : ?
Highly reactive coke have lower Coke reactivity index (CRI) Porosity Both B and C Critical air blast (CAB) value TRUE ANSWER : ? YOUR ANSWER : ?
Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm. 25-30 3-5 60-65 95-100 TRUE ANSWER : ? YOUR ANSWER : ?
Main use of hard coke produced by high temperature carbonisation is in the Cupola in foundaries Sinter making Domestic ovens Iron blast furnace TRUE ANSWER : ? YOUR ANSWER : ?
Air/gas ratio for complete combustion will be the highest for Carburetted water gas Gobar gas LPG Coke oven gas TRUE ANSWER : ? YOUR ANSWER : ?
With increase in the oxygen content of the coal, its __________ decreases. Caking power Calorific value Neither A nor B Both A & B TRUE ANSWER : ? YOUR ANSWER : ?
Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the Mixing with blast furnace gas Coke oven battery heating Hot scarfing of steel slabs Steel ladle drying TRUE ANSWER : ? YOUR ANSWER : ?
The main function of primary air in pulverised coal fired burner is to Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner Burn CO to CO₂ Dry and transport the coal TRUE ANSWER : ? YOUR ANSWER : ?