Related Questions

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
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
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 yield of tar from high temperature carbonisation of dry coal is about __________ percent.
A 3
B 12
C 22
D 0.3
Which of the following is not a product of coal tar distillation?
A Anthracene
B Cresote oil
C Carbolic oil
D None of these
Coal tar (produced by high temperature carbonisation) is the main source of
A Aromatic compounds
B Alphatic compounds
C Paraffins
D Olefins
Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher
A Calorific value
B Higher C/H ratio
C Sulphur content
D Difference in gross & net calorific value

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