A. 10
B. 25
C. 65
D. 90
Related Mcqs:
- Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively ______________ percent?
A. 3 & 10
B. 10 & 3
C. 10 & 20
D. 15 & 8 - 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 - 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 - Yield of charcoal in high temperature carbonisation of wood is about _____________ percent?
A. 10
B. 25
C. 50
D. 75 - Coal tar (produced by high temperature carbonisation) is the main source of_________________?
A. Aromatic compounds
B. Aliphatic compounds
C. Paraffins
D. Olefins - Coal tar (produced by high temperature carbonization) is the main source of_________?
A. Aromatic compounds
B. Aliphatic compounds
C. Paraffins
D. OlefinsSubmitted by: Muhammad Mutsadiq Umer
- In low temperature carbonisation of coal as compared to high temperature carbonisation _____________ produced is less?
A. Difference in gross & net calorific value of the coke oven gas
B. Free carbon content in tar
C. Yield percentage of coke
D. Yield of ammonia present in coke oven gas - Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is_________________?
A. 200 °F
B. 200 °C
C. 200 °K
D. 200 °R - Calorific value of tar is about _____________ Kcal/kg?
A. 8800
B. 12000
C. 14000
D. 16000 - In high temperature carbonisation (as compared to low temperature carbonisation) of coal___________________?
A. Coke oven gas yield is more
B. Tar yield is less but free carbon in tar is more
C. Calorific value of coke oven gas is less
D. All A., B. and C.
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