A. 9.5 : 1
B. 12.5 : 1
C. 15.5 : 1
D. 18.5 : 1
Related Mcqs:
- Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about ____________________?
A. 9 : 1
B. 17 : 1
C. 23 : 1
D. 29 : 1 - 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 - Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxy-acetylene welding is ______________ Nm3 ?
A. 0.5
B. 1
C. 1/3
D. 2.5 - A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?
A. 0
B. 0.33
C. 0.44
D. 0.25 - ______________ the exhaust gas is an indication of the incomplete combustion of fuel?
A. Low temperature of
B. High temperature of
C. High % of CO in
D. High % of CO2 in - The excess air required for the combustion of pulverized coal is of the order of about _______________ percent ?
A. 5
B. 15
C. 30
D. 45 - Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?
A. 1.5
B. 3
C. 5
D. 7 - ‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?
A. V
B. V/2
C. 2V
D. 3V - Percentage of argon (by volume) in dry atmospheric air is about________________?
A. 0.09
B. 0.3
C. 0.57
D. 0.94 - The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be________________?
A. 3171Pa
B. 3567Pa
C. 1.01 × 105Pa
D. 5000Pa
