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Engineering Chemistry Ii
Engineering Chemistry Objective
At what temperature does the Hand olefin gases are evolved in the process of carbonisation?
What happens when coal is expanded during the plastic stage of caking?
a) Closed texture coke is obtained
b) Highly swollen open texture coke is obtained
c) There is no change in the coal
d) Coal breaks into a number of pieces
Coal is a good conductor of heat and electricity.
Which of the following forms a heat barrier in the process of carbonisation?
a) Impurities present in the coal
b) Moisture present in the coal
c) Different structure of the machine
d) Thin plastic zone formed by caking coal
Which of the following coals have high rates of carbonisation?
a) Non-caking coal
b) Caking coal
c) Coking coal
d) Non-coking coal
In which type of plant does the carbonisation process is done?
a) Thermal power plant
b) Blast furnace process
d) Destructive distillation plant
Which type of carbonisation method is used for obtaining particular types of by-products?
a) High temperature carbonisation
b) Medium temperature carbonisation
c) Low temperature carbonisation
d) No by-products are formed
What is done when the coke is too friable for use in carbonisation process?
a) It is divided into small pieces
b) Its maturity is made decreased
c) The ash content is reduced
d) It is pulverised
How much yield of coke is produced in low temperature carbonisation?
a) 75-80 %
b) 60-70 %
c) 100 %
High temperature carbonisation process is used to produce ______________
a) Brown coal
b) Gas coke
c) Coal tar
d) Coal gas
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