Coke oven gas
Producer gas
Blast furnace gas
L.converter gas
✅ The correct answer is option D.
Chemical Engineering MCQs
Chrome magnesite is not used in the
inner lining of L.D. converter.
aluminium melting furnaces.
wear out lining of steel melting furnaces.
all (a), and (b) and (c)
✅ The correct answer is option C.
Fireclay bricks are used in the
furnaces allowed to cool frequently
flues
chimney linings
all (a), (b) and (c)
✅ The correct answer is option D.
Hot face insulating linings of high purity alumina fused mullite are used, where
very high temperatures are involved.
highly reducing conditions are involved.
presence of iron or silica is harmful.
all (a), (b) and (c).
✅ The correct answer is option D.
Carbon refractories are exclusively used in the
hearth of blast furnace.
walls of coke oven.
regenerators of coke oven.
side wall of soaking pits.
✅ The correct answer is option A.
Which one contains minimum percentage of SiO2?
Firebrick
Sillimanite
Semi-silica
Aluminous firebrick
✅ The correct answer is option B.
Silica refractories
crack when subjected to sudden change of temperature.
can not be used in the dome of hot blast stoves.
have lower thermal conductivity than fireclay bricks.
all (a), (b) and (c)
✅ The correct answer is option A.
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is
Much lower
Much higher
Same
Either lower or higher, depends on the type of fuel
✅ The correct answer is option A.
Combustion reaction of fuels is a/an __________ reaction.
Auto catalytic
Exothermic
Endothermic
None of these
✅ The correct answer is option B.
Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the
Hot scarfing of steel slabs
Mixing with blast furnace gas
Coke oven battery heating
Steel ladle drying
✅ The correct answer is option C.