Engineering Chemistry Coal 1 Online Exam Quiz
Engineering Chemistry Coal 1 GK Quiz. Question and Answers related to Engineering Chemistry Coal 1. MCQ (Multiple Choice Questions with answers about Engineering Chemistry Coal 1
What is the time required for the formation of young brown coals?
Options
A : 107 years
B : 3×108 years
C : 3×109 years
D : 1010 years
At what temperature should the coal be heated so as to determine the moisture content of coal?
Options
A : 90-100oC
B : 145-155oC
C : 125-140oC
D : 105-110oC
Which of the following substance is transformed to coal in its early stage?
Options
A : Animal debris
B : Bacteria
C : Vegetable debris
D : Non-living compounds
How is peat directly converted into anthracite by the process of parallel evolution (Hilt’s law)?
Options
A : By maintaining the acid conditions
B : By the process of consolidation and dewatering
C : By the aerobic decay of peat
D : By continuous eliminations of H2 gas
Which of the following coal contains alternative dull and laminated layers?
Options
A : Cannel coals
B : Banded coals
C : Splint coals
D : Bog-head coals
Ashes with fusion temperature above than 1430oC are called as ___________
Options
A : Fixed ash
B : Free ash
C : Refractory ash
D : Fusible ash
Why is the high percentage of moisture undesirable for coal?
Options
A : It increases the rate of combustion
B : It increases the cost of the coal
C : It reduces the calorific value of coal
D : It decreases its ignition temperature
For manufacturing of metallurgical coke which of the following properties a coal should have?
Options
A : Low volatile matter and high fixed carbon content
B : High volatile matter and high fixed carbon content
C : High volatile matter and low fixed carbon content
D : Low volatile matter and low fixed carbon content
Which of the following component is not a constituent of coal?
Options
A : Moisture
B : Ash
C : Fixed carbon
D : Volatile matter
Proximate analysis includes the estimation of ash, carbon, hydrogen, sulphur, nitrogen and oxygen.
Options
A : True
B : False
C :
D :
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