Question

Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.

a.

< 2

b.

< 5

c.

< 8

d.

< 10

Answer: (a).< 2

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Q. Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.

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