Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

Related Mcqs:

To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in___________________?

A. Shallow and small piles B. Fine sizes without the presence of any lump C. Closed space without any ventilation facility D. Large heaps with small surface to volume ratio...

Dry air required to burn 1 kg of carbon completely may be around ______________ kg?

A. 11 B. 2 C. 20 D. 38...

The maximum adiabatic flame temperature is attained, when the fuel is burnt with ______________________?

A. Theoretically required amount of air B. More than theoretically required amount of air C. Less than theoretically required amount of air D. Theoretically required amount of oxygen...

The gasification reaction represented by, C + H2O = CO + H2, is__________________?

A. Exothermic B. Endothermic C. Catalytic D. Autocatalytic...

Volatile matter content of metallurgical coke may be around ______________ percent?

A. 1-2 B. 10-15 C. 22-26 D. 30-33...