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.Management Sciences
A. Calorific value increases
B. Caking properties diminish
C. Swelling during carbonisation becomes excessive
D. None of these
Related Mcqs:
- A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be_________________?
- A. More B. Less C. Same D. Data insufficient; can’t be predicted...
- Low temperature oxidation of stored coal results in the________________?
- A. Decrease in its caking power & calorific value B. Decrease in its carbon & hydrogen content C. Increase in its oxygen content D. All A., B. and A....
- 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...
- Rate of low temperature oxidation of coal due to bad storage conditions_______________?
- A. Decreases with increase in surface area B. Does not vary with increase in surface area C. Is more for low volatile coal compared to high volatile coal D. Is accelerated by storage in large heaps with small surface to volume ratio...
- High temperature in gasification of coal favours________________?
- A. High production of CO2 B. Low production of CO2 C. High production of CO D. Both B. and C....
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