The hottest part of the flame lies in its____zone. Unburnt gases Non-luminous Yellow Luminous TRUE ANSWER : ? YOUR ANSWER : ?
The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to Make it look attractive Avoid radiation heat loss Minimise its corrosion None of these TRUE ANSWER : ? YOUR ANSWER : ?
Junker's calorimeter is used to determine the calorific value of Gaseous fuels Fuel oil None of these Pulverised coal TRUE ANSWER : ? YOUR ANSWER : ?
Higher fuel combustion efficiency can not be achieved by Adopting proper fuel firing technique & fuel preparation Supplying correct amount of combustion air Preheating of fuel gases & combustion air Reducing sulphur content in the fuel TRUE ANSWER : ? YOUR ANSWER : ?
Main use of soft coke is as __________ fuel. Foundary Domestic None of these Blastfurnace TRUE ANSWER : ? YOUR ANSWER : ?
Preheating of combustion air is done to Complete the combustion of fuel Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Increase the adiabatic flame temperature TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following can be made into briquettes without the use of a binder? Bituminous coal None of these Anthracite coal Lignite TRUE ANSWER : ? YOUR ANSWER : ?
'Wobbe index' is a characteristic of Liquid fuels Solid fuels Gaseous fuels Fat coals TRUE ANSWER : ? YOUR ANSWER : ?
Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 10200 3200 1800 5400 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following combustibles is absent in blast furnace gas? None of these CO CH₄ H₂ TRUE ANSWER : ? YOUR ANSWER : ?