Related Questions

Yield of pitch from distillation of high temperature tar is around __________ percent.
A 10
B 25
C 65
D 100
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
A Its calorific value is very less
B Tar neutralises the residual acids present in pitch
C It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
D All of the above
Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.
A 5
B 25
C 55
D 75
The terminology 'BTX' used in coal tar distillation industry refers to
A Benzol-toluol-xylol
B Benzol-toluene-xylene
C Benzene-toluol-xylol
D Benzene-toluene-xylene
Which of the following is not a product of coal tar distillation?
A Anthracene
B Cresote oil
C Carbolic oil
D None of these
Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.
A 10 & 3
B 3 & 10
C 15 & 8
D 10 & 20
The yield of tar from high temperature carbonisation of dry coal is about __________ percent.
A 3
B 12
C 22
D 0.3
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
Light oil whose major component is benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C.
A 80-170
B 200-300
C 250-270
D 280-300
Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.
A 15 to 25
B 35 to 45
C 55 to 75
D 75

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