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Fuels and Combustion

Fuels and Combustion
Washing of coal decreases its

Mineral matter content
Ash content
Both B and C
Caking index

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Fuels and Combustion
Percentage of carbon monoxide in blast furnace gas may be around

8
14
22
52

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Fuels and Combustion
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

CH₄
CO₂
N₂
H₂

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Fuels and Combustion
Bunsen burner is an example of a/an __________ burner.

Inside mixing/premix type
Submerged combustion
Rotary cup
Outside mixing/diffusion flame/nozzle mix type

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Fuels and Combustion
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always

1
> 1
Unpredicatable

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Fuels and Combustion
Low temperature oxidation of coal is accelerated by the

Storage in compressed piles
Absence of porous or friable particles
All of these
Storage in large heaps

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MORE MCQ ON Fuels and Combustion

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