A. Furnace oil

B. Naphtha

D. Coal

A. Coke oven gas

B. Carburetted water gas

C. Blast furnace gas

A. Tar yield is less but free carbon in tar is more

C. Calorific value of coke oven gas is less

D. Coke oven gas yield is more

A. Either A. or B.; depends on the type of coal

B. Same as

D. Lower than

B. H2

C. CO

D. CH4

A. CO2 & H2

C. CO2 & O2

D. CO & O2

B. Pyrogallol solution

C. KOH

D. Ammoniacal cuprous chloride

B. High heat transfer rate

C. Lower furnace operating temperature

D. Reduced NOx formation in flue gas

A. Higher reactivity

B. Lower bulk density

D. Lower strength

A. 3.5

B. 2.5

D. 1.5

A. Free carbon in tar is more

C. Ammonia yield is more

D. All A., B. and C.

B. Theoretically required amount of air

C. More than theoretically required amount of air

D. Less than theoretically required amount of air

A. Blast furnace gas

B. Carburetted water gas

D. Producers gas

B. Colloidal fuels

C. LPG

D. Coal briquettes

A. Scale losses of the furnace stock

C. Calorific value of the fuel

D. None of these

A. Absorbing in vetro-coke solution

B. Adsorbing on bog iron bed

C. None of these

A. Have proper combustion by supplying it around the burner

B. Preheat the tertiary air used for complete combustion of CO to CO2

C. Burn CO to CO2

A. 200 C

B. 200 K

C. 200 R

B. Caking tendency

C. Coking tendency

D. Size stability

A. Dry quenching of coke

C. Stamped charging of coal

D. Preheating, blending and de-ashing the coal

B. 5-Mar

C. 60-65

D. 95-100

B. CO2

C. H2

D. N2

A. Anthracite

C. Bituminous coal

D. Semi-bituminous coal

A. None of these

B. Minimise its corrosion

C. Make it look attractive

A. Durain

B. Fussain

C. Clarain

A. CH4

B. N2

C. CO2

A. Furnace oil

B. Naphtha

C. Natural gas

A. Dehydration

C. Hydrolysis

D. Oxidation

A. Gaseous

B. Solid

C. Liquid

A. NH3

B. H2

C. CO2

A. H2 & CO2

B. H2 & CO

D. CH4 & CO

A. Fast & slow

C. Slow & low

D. Slow & high

A. Only CO

B. Both CO and CO2

C. Both CO and O2

A. Intermittent and uncontrolled combustion of the fuel

B. High exit flue gas temperature from the furnace

D. Excessive power requirement of air blower

B. Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not

C. Methane content in the coke oven gas decreases and carbon monoxide content increases

D. pensated by increase in CO & H2 content

E. Hydrogen content of coke oven gas increases due to cracking of hydrocarbons

A. Temperature of the flue gas

B. Its height

D. Neither A. nor B.

A. Facilitate easy ash removal

B. Enhance its calorific value

C. Provide trouble free operation

A. 35

C. 55

D. 20

A. Higher calorific value

B. Lower hydrogen content

C. Both A. and B.

A. 21% excess oxygen has been used for combustion

B. No excess air has been used for combustion

D. 21% excess air has been used for combustion

A. 10000

C. 4000

D. 2500

A. Anthracite

C. Lignite

D. Bituminous coal

A. The ratio of its percentage of fixed carbon to that of volatile matter

B. Helpful in estimation of its rank

D. Neither A. nor B.

A. Fuel oil

C. Diesel

D. Gasoline

A. 500

B. 0.5

C. 50

A. 2

C. 38

D. 20

A. Reactivity

B. Porosity

D. Bulk density

A. Supply of excess air

B. None of these

D. Supply of excess fuel

E. e air</strong>

A. None of these

B. Calorific value increases

C. Swelling during carbonisation becomes excessive

A. Use of thick fire bed

B. Low fusion point of ash (< 1100 C)

C. Use of preheated primary air