C.V. (kcal/Nm3) of gaseous fuels _____________ with increase in molecular weight?

Related Mcqs:

‘Wind loss’ resulting from unscientific storage of coal may be the order of about _____________ percent?

A. 2.5 B. 7.5 C. 10.5 D. 14.5...

Presence of free moisture in coal is most disadvantageous during_________________?

A. Its pulverisation (as it requires more power) B. Combustion of fire slacks on the grates C. Handling (e.g. when emptying wagons) D. None of these...

Low temperature oxidation of coal during storage does not decrease its__________________?

A. Oxygen content B. Caking power C. Calorific value D. None of these...

Fuel consumption in coke making can be reduced by___________________?

A. Preheating, blending and de-ashing the coal B. Stamped charging of coal C. Dry quenching of coke D. All A., B. and C....

A coal with high ash content is undesirable, as________________?

A. It is abrasive to the coal pulveriser (i.e. ball mill) and the combustion chamber B. The ash in molten condition gets absorbed in the pores of the refractory lining of the furnace and causes its spalling due to different co-efficient of expansion/contraction of the refractory and the ash C. The ash retains the sulphur … A coal with high ash content is undesirable, as________________?Read More...