FUELS AND COMBUSTION QUIZ

CO₂ : 7.42, CO : 1.86, O₂ : 4.64, N₂:86.02

CO₂ : 6.26, CO : 1.56, O₂ : 3.91, H₂O :15.66, N₂ : 72.60

CO₂ : 6.39, CO : 1.60, O₂ : 3.99, H₂O:25.96, N₂:72.06

CO₂ : 7.60, CO : 1.90, O₂ : 4.75, N₂ : 85.74

Liquid

Solid

Gaseous

Both B and C

Young

Mature

Neither A nor B

Both A & B

Closed space without any ventilation facility

Large heaps with small surface to volume ratio

Shallow and small piles

Fine sizes without the presence of any lump

Use of thick fire bed

All of these

Low fusion point of ash (< 1100° C)

Use of preheated primary air

Only O₂

Both O₂ and CO

All of these

Both O₂ and CO₂

CH₄

CO₂

CO

H₂

N₂ & H₂

CH₄ & CO₂

N₂ & CH₄

N₂ & CO

Unburnt gases

Luminous

Non-luminous

Yellow

500

5

5000

50