Related Questions

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
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
A 70
B 55
C 80
D 94
Which of the following is not a product of coal tar distillation?
A Anthracene
B Cresote oil
C Carbolic oil
D None of these
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
Yield of pitch from distillation of high temperature tar is around __________ percent.
A 10
B 25
C 65
D 100
Which of the following is not a product of tar distillation?
A Phenol & naphthalene
B Benzol & pitch
C Anthracene & creosote
D None of these
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
The terminology used for the bottom most product from the vacuum crude distillation unit is
A Residual crude
B Residuum
C Reduced crude
D Petrolatum
Coal tar is used as a
A Binding material for coal briquettes
B Fuel in rotary kiln
C Binder in making carbon electrodes
D All of the above
Although it can be derived_ oil, coal, and tar kerosene is usually produced_ refining it from petroleum.
A from/by
B by/from
C in/from
D at/for

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