Fuels and Combustion - Part 1 Online Exam Quiz
Fuels and Combustion - Part 1 GK Quiz. Question and Answers related to Fuels and Combustion - Part 1. MCQ (Multiple Choice Questions with answers about Fuels and Combustion - Part 1
Higher efficiency in the combustion of solid fuel can not be achieved by
Options
A : proper fuel preparation.
B : keeping the flue gas exhaust temperature very high.
C : adopting efficient-fuel firing technique & equipment.
D : supplying correct quantity of combustion air.
A coal containing very high percentage of durain is called __________ coal.
Options
A : bright
B : splint
C : non-banded
D : boghead
During combustion of gaseous fuels, deficiency of air
Options
A : lengthens the flame.
B : tends to shorten the flame.
C : does not affect the flame length.
D : increases the flame temperature.
Gross and net calorific value of a fuel will be the same
Options
A : if its ash content is zero.
B : ifits carbon content is very low.
C : if its hydrogen/hydrogen compound content is zero.
D : under no circumstances.
Low temperature carbonisation
Options
A : is mainly for producing the smokeless domestic coke.
B : is meant for the production of 'metallurgical coke'.
C : produces higher quantity of gas than high temperature carbonisation.
D : produces less quantity of tar than high temperature carbonisation.
Which of the following is not used as a binder in coal briquetting ?
Options
A : Tar
B : Molasses
C : Pitch
D : Line
Size of blast furnace grade coke is __________ mm.
Options
A : 25-80
B : 0-15
C : 15-25
D : >100
Presence of __________ in a dry gaseous fuel does not contribute to its calorific value.
Options
A : sulphur
B : oxygen
C : hydrogen
D : carbon
The internal energy of the combustion products is __________ compared to that of reactants.
Options
A : more
B : less
C : equal
D : more or less ; (depends on the state of fuel.)
Which of the following is not a product of tar distillation ?
Options
A : Phenol & naphthalene
B : Benzol & pitch
C : Anthracene & creosote
D : None of these
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