Sometimes water is sprayed during coal charging in the coke oven, which helps in

A Prevention of clinker formation in the oven
B Controlling the dust nuisance while charging the coal
C Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO &amp; H<sub>2</sub> in the gas (due to the endothermic reaction represented by C + H<sub>2</sub>O = CO + H<sub>2</sub>)
D All of the above

Correct Answer: All of the above

Bissoy MCQ
#Chemical Engineering #Fuels and Combustion

Related Questions

Width of the coke oven towards coke side is slightly more than that on pusher side to
A Facilitate easy discharging of coke as it swells during carbonisation
B Facilitate uniform heating of the oven
C Increase the output of the coke
D None of these
Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.
A Colour
B Moisture content
C Ash content
D Volatile matter
During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass.
A Density
B Porosity
C Electrical resistivity
D None of these
Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has
A Higher calorific value
B Lower hydrogen content
C Both A & B
D Neither A nor B
A cake is put in the oven at 7.20 am. If the cake takes three quarters of an hour to bake, at what time should it be taken out of the oven ?
A 8:10 a.m.
B 8:05 a.m.
C 8:15 a.m.
D 7:50 a.m.
Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is
A Neutralised by alkali treatment
B Left as such without any treatment
C Diluted with fresh water to reduce its acidity
D None of these
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?
A Urea
B CAN
C Ammonium sulphate
D Superphosphate
Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant?
A Ammonium sulphate
B Ammonium nitrate
C Ammonium phosphate
D None of these
Naphthalene is removed from coke oven gas by
A Adsorbing on palladium
B Absorbing in ethanolamine
C Scrubbing with wash oil
D Passing it through electrostatic precipitator
Hydrogen content of coke oven gas is __________ percent.
A 4
B 22
C 58
D 84

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