Number of macrocomponents present in coal according to Stopes are ___________________?

Related Mcqs:

The maximum adiabatic flame temperature in air is _____________ the maximum flame temperature in pure oxygen?

A. Lower than B. Higher than C. Same as D. Not related to...

Catalyst used in Fischer-Tropsch process is_______________?

A. Nickel B. Zinc oxide C. Alumina D. Thorium oxide...

In low temperature carbonisation (as compared to high temperature carbonisation) of coal__________________?

A. Ammonia yield is more B. Aliphatic tar is produced C. Free carbon in tar is more D. All A., B. and C....

Proximate analysis of coal determines its ______________ content?

A. Moisture, ash, sulphur & volatile matter B. Moisture, volatile matter, ash & fixed carbon C. Moisture, sulphur, nitrogen & fixed carbon D. None of these...

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...