____________ process is meant for direct hydrogenation of coal to produce liquid fuel?

Related Mcqs:

1. By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of_______________?

   A. Tar
   B. Benzol
   C. Ammonia
   D. None of these

2. Calorific value of coal middling generated in coal washeries during washing of coal may be around _____________ Kcal/kg?

   A. 1000
   B. 4000
   C. 6000
   D. 8000

3. The liquid used for the washing of coal in an industrial coal washery is a mixture of water and ____________________?

   A. Carbon tetrachloride
   B. Sand (40%)
   C. Mineral oil of high viscosity & specific gravity (1.6)
   D. None of these

4. A travelling grate stoker is meant for the efficient burning of ______________ coal?

   A. Caking
   B. Pulverised
   C. Non-caking
   D. High ash

5. Higher percentage of ash in coal meant for the production of metallurgical grade coke ___________________?

   A. Decreases the hardness of coke
   B. Decreases the abrasion resistance of coke
   C. Causes brittleness in steel
   D. None of these

6. Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt ‘using theoretical amount of air in___________________?

   A. Air
   B. Oxygen
   C. Either A. or B.
   D. Either A. or B. without gain or loss of heat

7. Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?

   A. 400-500
   B. 900-1000
   C. 1400-1500
   D. 1700-1800

8. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3), while the C.V. is same on weight basis (i.e., kcal/kg) ?

   A. Propane and acetylene
   B. Propane and LPG
   C. Sewage gas and gobar gas
   D. B.F. gas and coke oven gas

9. For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?

   A. Increase
   B. Decrease
   C. Increase or decrease depending on the fuel type
   D. Not change

10. The fuel ratio of a coal is__________________?

    A. The ratio of its percentage of fixed carbon to that of volatile matter
    B. Helpful in estimation of its rank
    C. Both A. and B.
    D. Neither A. nor B.