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
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
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
Which of the following is not a product of tar distillation?
A Phenol & naphthalene
B Benzol & pitch
C Anthracene & creosote
D None of these
In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced.
A Concentrate
B Tailing
C Middling
D None of these
Yield of pitch from distillation of high temperature tar is around __________ percent.
A 10
B 25
C 65
D 100
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
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
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

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