Fuels and Combustion Main constituent of natural gas is CH₄ (upto 90%) C₂H₆ C₃H₈ H₂ CH₄ (upto 90%) C₂H₆ C₃H₈ H₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of coal is accelerated by the All of these Storage in compressed piles Storage in large heaps Absence of porous or friable particles All of these Storage in compressed piles Storage in large heaps Absence of porous or friable particles ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr. 2.5 20 0.5 10 2.5 20 0.5 10 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Removal of hydrogen from coke oven gas Does not alter its calorific value Is not possible on commerical scale Decreases its calorific value Increases its calorific value Does not alter its calorific value Is not possible on commerical scale Decreases its calorific value Increases its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 1800 10200 5400 3200 1800 10200 5400 3200 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke should have very low Hardness & strength Sulphur & phosphorous content Porosity Fusion point of its ash Hardness & strength Sulphur & phosphorous content Porosity Fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
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