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
Which of the following is not a product of coal tar distillation?
A Anthracene
B Cresote oil
C Carbolic oil
D None of these
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
Yield of pitch from distillation of high temperature tar is around __________ percent.
A 10
B 25
C 65
D 100
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
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
Scheme-1: C6H5N2Cl→CuCNC6H5CN→H2o/H+C6H5COOH→∆Product-I Scheme-2: C6H5NO2→Fe/HCLC6H5NH2→N2NO3+HCL, 273KC6H5N2Cl→H2O/H+Product-II Scheme-3: CH3COOH→NH3CH3CONH2→NaOBrProduct-III উল্লিখিত Scheme সমূহে Product-I, Product-II এবং Product-III হলো যথাক্রমেঃ
A C6H5COONH4, C6H5Cl and CH3OH
B C6H5CONH2, C6H5NH2 and CH3OH
C C6H5CONH2, C6H5NH2 and CH3NH2
D C6H5CONH2, C6H5OH and CH3OH
Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
A Cost
B Availability
C Toxicity
D Selectivity
If the amount of the steam used in steam distillation is increased, the temperature of distillation
A Increases
B Decreases
C Remains unchanged
D Depends on relative volatility

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