FUELS AND COMBUSTION QUIZ

Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal?

Durain

Clarain

Fussain

Vitrain

TRUE ANSWER : ?
YOUR ANSWER : ?

During its calorific value determination by bomb calorimeter, coal is combusted by

None of these

Oxygen

Oxygen enriched air

Air

TRUE ANSWER : ?
YOUR ANSWER : ?

Main constituents of benzol are

Ammonia & phenol

Benzene, toluene & xylene

Anthracene & phenol

Tar & creosote

TRUE ANSWER : ?
YOUR ANSWER : ?

Caking index of the coal blend used for the manufacture of metallurgical coke should be around

48

21

5

40

TRUE ANSWER : ?
YOUR ANSWER : ?

Use of excess of combustion air in the combustion of fuels results in

Heat losses

Long flame

None of these

Condensation of water vapour from the fuel gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Ionisation potential applied across the electrodes of electrostatic tar precipitator is around

60 KV AC

230 V DC

60 KV DC

230 V AC

TRUE ANSWER : ?
YOUR ANSWER : ?

Benzene is used

As an explosive

As a motor fuel

As a perfume

For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR)

TRUE ANSWER : ?
YOUR ANSWER : ?

Natural draft created by the chimney depends upon

Temperature of the flue gas

Its height

Both A & B

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis.

950

550

1150

750

TRUE ANSWER : ?
YOUR ANSWER : ?

The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction. n.

Reduction

Neumann reversal

Shift conversion

Boudouard

TRUE ANSWER : ?
YOUR ANSWER : ?

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