Produces more slag when used in the blast furnace
Has poor strength and abrasion resistance
Is desirable in producer gas manufacture
None of these
✅ The correct answer is option A.
Chemical Engineering MCQs
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the
Requirement of large volume combustion chamber
Risk of explosion
Chances of clinker formation
Incomplete combustion of coal
✅ The correct answer is option B.
Flash point of diesel/kerosene (>50°C) is determined by the
Abel apparatus
Pensky-Martens apparatus
Saybolt chromometer
none of these
✅ The correct answer is option B.
The average boiling point of aviation turbine fuel is closest to that of
lubricating oils
LPG
diesel
Kerosene
✅ The correct answer is option D.
Size of blast furnace grade coke is __________ mm.
25-80
0-15
15-25
>100
✅ The correct answer is option A.
Flash point of a liquid petroleum fuel gives an idea about its
volatility.
explosion hazards characteristics.
nature of boiling point diagram.
all (a), (b) and (c)
✅ The correct answer is option D.
The order of preference for feedstock to a catalytic reformer is
catalytic naphtha – coking naphtha – virgin naphtha.
coking naphtha – virgin naphtha – catalytic naphtha.
virgin naphtha – catalytic naphtha – coking naphtha.
virgin naphtha – coking naphtha – catalytic naphtha.
✅ The correct answer is option B.
Petroleum coke is used mainly .in the
discoloration of yellow glycerine.
sugar refining.
manufacture of carbon electrode.
blast furnace for reduction of iron ore.
✅ The correct answer is option C.
Tar is a better fuel than furnace oil, because of its
Higher calorific value
Lower sulphur content
Higher emissivity (0.8 – 0.9) resulting in higher radiation heat transfer rate
Both A & B
✅ The correct answer is option D.
Feed for reforming is generally
naphtha or straight run gasoline.
reduced crude.
vacuum gas oil.
atmospheric gas oil.
✅ The correct answer is option A.