Hardgrove Grindability index of four coal samples are given below. Which of them is the easiest to grind ?

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 calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be___________________?

A. y B. 0.95 y C. 1.05 y D. 1.8 y...

Actual flame temperature is always lower than the adiabatic flame temperature, because there is________________?

A. No possibility of obtaining complete combustion at high temperature B. Always loss of heat from the flame C. Both A. and B. D. Neither A. nor B....