Carbon Content by weight in air dried wood may be about _______________ percent?

Related Mcqs:

1. Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the____________________?

   A. Decolourisation of sugar B. Solvent recovery from air and gases C. Absorption of gases and vapor D. Electrode manufacture...

2. Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is _______________ percent?

   A. 71% C. In between 37 & 71% D. None of these...

3. Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about ______________ percent as compared to the use of atmospheric combustion air?

   A. 5 B. 10 C. 20 D. 35...

4. Mineral matter content (M) and ash content A. in coal are approximately related as _______________?

   A. M = 1.1A B. M = A C. M = 1.5A D. M = 2A...

5. Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?

   A. 4 B. 96 C. 20 D. 40...

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

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

7. Volatile matter content of metallurgical coke may be around ______________ percent?

   A. 1-2 B. 10-15 C. 22-26 D. 30-33...

8. Ash content in the coke produced from a coking coal having 20% ash may be around _____________ percent?

   A. 6 B. 12 C. 18 D. 24...

9. Coal is heated in presence of air to a temperature of about _______________ °C, while determining its ash content for proximate analysis?

   A. 500 B. 750 C. 950 D. 1100...

10. Yield of charcoal in high temperature carbonisation of wood is about _____________ percent?

    A. 10 B. 25 C. 50 D. 75...