Related Mcqs:

1. A coal having high volatile matter content will ________________?

   A. Give less yield of tar and gas on carbonisation
   B. Burn with a small non-smoky flame
   C. Have a very high calorific value
   D. None of these

2. A coal having higher volatile matter content, has lower_________________?

   A. Smoking tendency on burning
   B. Coke oven gas yield on carbonisation
   C. Chance of catching fire during storage in open space
   D. Ignition temperature

3. A coal having higher volatile matter content will necessarily have lower____________________?

   A. Ash fusion temperature
   B. Calorific value
   C. Ignition temperature
   D. Caking index

4. A coal containing high amount of volatile matter will have__________________?

   A. Low ignition temperature
   B. Very little ash content
   C. High fusion point of its ash
   D. Low adiabatic flame temperature

5. A coal having high amount of volatile matter____________________?

   A. Would require smaller combustion chamber
   B. Produces very little of tar and gas on carbonisation
   C. Ignites easily and burns with long smoky flame
   D. All A., B. and C.

6. Volatile matter content in coking coal may be about _____________ percent?

   A. 1
   B. 7
   C. 22
   D. 46

7. Coal is heated in absence of air for 7 minutes at a temperature of about ______________ °C, during its volatile matter determination for proximate analysis?

   A. 550
   B. 750
   C. 950
   D. 1150

8. The difference between total carbon and fixed carbon of coal will be minimum in case of___________________?

   A. Lignite
   B. Bituminous coal
   C. Anthracite
   D. High temperature coke (V.M < 0.5%)

9. The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?

   A. 1
   B. < 1
   C. > 1
   D. Unpredictable

10. Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has_________________?

    A. Higher calorific value
    B. Lower hydrogen content
    C. Both A. and B.
    D. Neither A. nor B.