Fischer-Tropsch method aims at the ______________________?

Related Mcqs:

1. Catalyst used in Fischer-Tropsch process is_______________?

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

2. 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

3. The function of secondary combustion air is to ______________________?

   A. Pneumatically convey the pulverised coal
   B. Completely burn the volatile matter
   C. Burn the lumpy coal
   D. None of these

4. 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

5. Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called_________________?

   A. Back draughting
   B. Banking
   C. Under pressurising
   D. None of these

6. Which of the following would require least amount of secondary air for combustion ?

   A. Coke breeze containing 25% ash and 2% volatile matter
   B. Anthracite containing 10% volatile matter and 8% ash
   C. Bituminous coal containing 20% ash and 25% volatile matter
   D. Semi-bituminous coal containing 25% ash and 20% volatile matter

7. Very ______________ coals are completely devoid of cokability i.e., it is non-coking ?

   A. Young
   B. Mature
   C. Both A & B
   D. Neither A nor B

8. In general, the limit of inflammability/explosion limit of fuel gases is widened by the__________________?

   A. Increase in gas pressure
   B. Increase in temperature (i.e. preheating)
   C. Use of pure oxygen for combustion instead of air
   D. All A., B. & C.

9. Grindability index of a coal is 100. It implies that the ___________________?

   A. Coal can be pulverised with great difficulty
   B. Coal can’t be pulverised
   C. Coal can be easily pulverised
   D. Power consumption in grinding the coal will be very high

10. Stack heat losses can be minimised by________________?

    A. Controlling the excess air
    B. Oxygen enrichment of combustion air
    C. Using low c.v. fuels
    D. Maintaining proper draft in the furnace