When incomplete combustion loss is high, the flue gas analysis shows large amount of

Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

A

CO₂

B

N₂

C

O₂

D

CO

Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.

A

Smoke

B

Temperature

C

Oxygen

D

Carbon monoxide

Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

A

CO content

B

Dew point

C

CO₂ content

D

O₂ content

The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

A

Efficiency of the boiler

B

Efficiency of the chimney

C

Efficiency of the fan

D

Power of the boiler

Ten new television shows appeared during the month of September. Five of the shows were sitcoms, three were hour-long dramas, and two were news-magazine shows. By January, only seven of these new shows were still on the air. Five of the shows that remained were sitcoms.

A

Only one of the news-magazine shows remained on the air.

B

Only one of the hour-long dramas remained on the air.

C

At least one of the shows that was cancelled was an hour-long drama.

D

Television viewers prefer sitcoms over hour-long dramas.

Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

A

CO

B

CO₂

C

H₂O

D

Both B & C

To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is

A

Divided by its molecular weight

B

Multiplied by its molecular weight

C

Multiplied by its density

D

Multiplied by its specific weight

__________ the exhaust gas is an indication of the incomplete combustion of fuel.

A

Low temperature of

B

High temperature of

C

High % of CO in

D

High % of CO₂ in

In flue gas analysis by Orsat's apparatus, oxygen is absorbed by

A

Potassium hydroxide

B

Cuprous chloride

C

Alkaline pyragllol solution

D

None of these

In flue gas analysis by Orsat's apparatus, carbon dioxide is absorbed by

A

Potassium hydroxide

B

Dilute potassium carbonate

C

Cuporus chloride

D

Alkaline pyragllol solution

When incomplete combustion loss is high, the flue gas analysis shows large amount of

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