6
18
28
36
✅ The correct answer is option B.
Fuel and Combustion MCQs
In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by
Cuprous chloride
Potassium hydroxide
Alkaline pyrogallol solution
None of these
✅ The correct answer is option A.
Washing of coal decreases its
Caking index
Mineral matter content
Ash content
Both B and C
✅ The correct answer is option B.
Hard pitch is used for making
Pulverised fuel
Perfumes
Insecticides
Plastics
✅ The correct answer is option A.
With increase in C/H ratio of a fuel, the amount of CO₂ formed on its complete combustion
Increases
Decreases
Remains same
Either A or B, depends on other factors
✅ The correct answer is option A.
Which of the following coal gasification processes will produce gas having maximum methane content?
Winkler process
Lurgi process
Kopper-Totzek process
All of the above
✅ The correct answer is option B.
Calorific value of furnace oil is about __________ Kcal/kg.
10000
15000
5000
20000
✅ The correct answer is option A.
Fuel for a nuclear reactor (thermal) is
Uranium
Plutonium
Radium
None of these
✅ The correct answer is option A.
__________ of the coal is the basis for Seylor’s coal classification.
Proximate analysis
Ultimate analysis
Caking index
Calorific value
✅ The correct answer is option B.
Which of the following has the highest calorific value?
Lignite
Sub-bituminous coal
Anthracite
Peat
✅ The correct answer is option C.