Combustion reaction of fuels is a/an ______________ reaction?

Related Mcqs:

1. Use of excess of combustion air in the combustion of fuels results in__________________?

   A. Heat losses
   B. Long flame
   C. Condensation of water vapour from the fuel gas
   D. None of these

2. High excess air in combustion of fuels results in____________________?

   A. Increased fuel consumption
   B. Incomplete combustion
   C. Smoky flame
   D. None of these

3. During combustion of gaseous fuels, deficiency of air_________________?

   A. Lengthens the flame
   B. Tends to shorten the flame
   C. Does not affect the flame length
   D. Increases the flame temperature

4. Deficiency of combustion air during combustion of a gaseous fuel_____________________?

   A. Lengthens the flame
   B. Causes heat loss of fuel by its partial combustion
   C. Both A. & B.
   D. Shortens the flame

5. Calorific value of both the solid & liquid fuels can be determined by using ______________ calorimeter?

   A. Junker’s
   B. Bomb
   C. Boy’s
   D. None of these

6. Calorific values of both the solid as well as the liquid fuels can be determined by ______________ calorimeter?

   A. Bomb
   B. Boy’s
   C. Junkers
   D. None of these

7. The combustion reaction, C + O2 = CO2, is ___________________?

   A. Exothermic
   B. Endothermic
   C. Autocatalytic
   D. None of these

8. The reaction, C + CO2 ↔ 2CO, taking place during coal gasification is called the ______________ reaction?

   A. Neumann reversal
   B. Shift conversion
   C. Boudouard
   D. Reduction

9. 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

10. Efficiency of the combustion of a fuel is judged by the ______________ the flue gas?

    A. % of CO2 in
    B. % of O2in
    C. Temperature of
    D. Colour of