silica
carborundum
fireclay
magnesite
✅ The correct answer is option C.
Chemical Engineering MCQs
High alumina refractories are used in the
dome of blast furnace stoves.
electric arc furnace roof.
glass melting furnaces.
all (a), (b) and (c).
✅ The correct answer is option D.
Magnesite bricks are used in those parts of furnaces, which are
subjected to temperature fluctuation.
required to resist corrosive basic slag.
subjected to high load.
none of these.
✅ The correct answer is option B.
Panel test determines the __________ of refractories.
fusion point
spalling resistance
slag penetration resistance
refractoriness under load (RUL)
✅ The correct answer is option B.
Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm2.
10
100
500
1000
✅ The correct answer is option D.
Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.
Colour
Moisture content
Ash content
Volatile matter
✅ The correct answer is option D.
The cooling medium used in dry quenching of coke is
Nitrogen
Air
Phenolic water
Carbon dioxide
✅ The correct answer is option A.
Coke oven gas burns with an yellowish flame, because of the presence of
CO₂
CH₄
H₂
NH₃
✅ The correct answer is option B.
The main advantage of forced draft over natural draft is that
Combustion of fuel is complete
Smaller height chimney can be used
Furnace control is easier
All of the above
✅ The correct answer is option D.
In low temperature carbonisation (as compared to high temperature carbonisation) of coal
Ammonia yield is more
Aliphatic tar is produced
Free carbon in tar is more
All of the above
✅ The correct answer is option B.