In Orsat’s apparatus, ammoniacal cuprous chloride is used for selectivity absorbing________________?
A. CO
B. CO2
C. O2
D. H2O
Fuels and Combustion
Which of the following is the most reactive (as regards the formation of CO + H2 from C + H2O) ?
Which of the following is the most reactive (as regards the formation of CO + H2 from C + H2O) ?
A. Blast furnace coke
B. Low temperature coke
C. Anthracite coal
D. Sub-bituminous coal
Abel apparatus is used for those oils, whose flash points are ___________°F?
Abel apparatus is used for those oils, whose flash points are ___________°F?
A. < 120
B. > 120
C. > 280
D. 300-600
Assam (India) coals suffers mainly from the disadvantage of high ______________ content?
Assam (India) coals suffers mainly from the disadvantage of high ______________ content?
A. Ash
B. Volatile matter
C. Sulphur (4-6%)
D. Moisture
High temperature in gasification of coal favours________________?
High temperature in gasification of coal favours________________?
A. High production of CO2
B. Low production of CO2
C. High production of CO
D. Both B. and C.
During its calorific value determination by bomb calorimeter, coal is combusted by _________________?
During its calorific value determination by bomb calorimeter, coal is combusted by _________________?
A. Air
B. Oxygen
C. Oxygen enriched air
D. None of these
Pensky-Marten apparatus is used for those oils, whose flash points are _____________ °F?
Pensky-Marten apparatus is used for those oils, whose flash points are _____________ °F?
A. < 120
B. > 120
C. < 90
D. 90-110
The main product of high temperature carbonisation of coal is__________________?
The main product of high temperature carbonisation of coal is__________________?
A. Coke
B. Ammonia
C. Tar
D. Coke oven gas
Which of the following is not a manufactured fuel ?
Which of the following is not a manufactured fuel ?
A. Coke breeze
B. Soft coke
C. Colloidal fuels
D. Charcoal
A coal having high amount of volatile matter____________________?
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.