A. Bakelite

C. Teflon

D. SBR

B. Temperature

C. Oxygen

D. Smoke

A. Polythene

C. Polypropylene

D. PVC

A. Bakelite

B. Nylon-66

D. Terylene

A. Vulcanise it

C. Make it thermosetting

D. Make it non-inflammable

B. Oxidation resistance

C. Weight & strength

D. Elasticity & water solubility

A. Solid

B. Neither solid nor liquid

D. Liquid

A. Produce weak coke

B. Produce strong coke

C. May damage the coke oven walls during carbonisation

A. Cellulose acetate

B. Water impermeable cellophane

C. Teflon

B. Increase in its oxygen content

C. Decrease in its caking power & calorific value

D. Decrease in its carbon & hydrogen content

A. Clarain

C. Durain

D. Vitrain

A. 4

C. 1

D. 6

A. Diesel

C. Petrol

D. LPG

A. Multicyclones

B. Wet scrubber

C. Hydrocyclones

B. Coke oven gas

C. Producer gas

D. Blast furnace gas

A. Producers gas

C. Carburetted water gas

D. Blast furnace gas

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

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

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

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

C. Coke oven gas yield is more

D. Calorific value of coke oven gas is less

B. Does not affect the flame length

C. Tends to shorten the flame

D. Increases the flame temperature

A. Low ash

B. High calorific value

C. High ash

A. 1000

B. 5000

C. 10000

A. Blast furnace gas

C. Bituminous coal

D. Pitch

A. Fuel

B. Air

D. Neither A. nor B.

A. Moisture, ash, sulphur & volatile matter

C. None of these

D. Moisture, sulphur, nitrogen & fixed carbon

B. Shift conversion

C. Reduction

D. Neumann reversal

B. 55

C. 20

D. 35

A. Is not subjected to washing

B. Has low quantity of mineral matter

D. Has higher calorific value

A. Beehive coke

B. Foundry coke

C. Metallurgical coke

A. None of these

B. Long flame

C. Condensation of water vapour from the fuel gas

A. 6000

C. 1000

D. 8000

A. Buckling of ram of pusher car at the time of coke pushing

C. Problem in door cleaning

D. Structural strength of silica bricks

B. Natural gas

C. Coke oven gas

D. Water gas

A. Is non-coking

B. named

C. Has a high volatile matter content and burns with a luminous smoky flame

E. Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is

A. High rank coals have higher amount of volatile matter

C. Oxygen content progressively decreases

D. Calorific value of the coal increases

A. Oxygen enriched air

B. Air

C. None of these

B. Bubbling it through dilute sulphuric acid

C. Adsorption on silica gel

D. Absorption in wash oil

B. Catalytic

C. Exothermic

D. Autocatalytic

A. Decreases the dew point

B. Increases the dew point

C. Reduces the combustion efficiency by limiting the permissible temperature reduction

B. Storage in large heaps with small surface to volume ratio

C. Low temperature oxidation

D. Inadequate ventilation

B. 36

C. 12

D. 8

B. None of these

C. Winkler

D. Kopper-Totzek

A. All A., B. and C.

B. Free carbon in tar is more

C. Ammonia yield is more

A. Both steam and electrical power

B. Lean gas (e.g., B.F. gas)

C. Rich gas (e.g., coke oven gas)

A. Vanadium

B. Silica gel

C. Alumina

B. Fuel oil

C. None of these

D. Pulverised coal

A. CH4 & N2

B. CO & CO2

C. CO & N2

B. Smaller height chimney can be used

C. Combustion of fuel is complete

D. Furnace control is easier

B. Volatile matter in coke is zero

C. Yield of coke oven gas is 290 Nm3 /ton dry coal

D. Yield of tar is about 3% of dry coal

A. Oxidation

B. Hydrogenation

C. None of these

A. 3

C. 2

D. 4