FUELS AND COMBUSTION QUIZ

Main constituents of benzol are

Anthracene & phenol

Benzene, toluene & xylene

Ammonia & phenol

Tar & creosote

TRUE ANSWER : ?
YOUR ANSWER : ?

The calorific value of natural gas is about __________ kcal/Nm³.

10, 000

35, 000

2500

25, 000

TRUE ANSWER : ?
YOUR ANSWER : ?

Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis.

500

950

750

1100

TRUE ANSWER : ?
YOUR ANSWER : ?

Low temperature oxidation of stored coal results in the

Increase in its oxygen content

Decrease in its caking power & calorific value

All of these

Decrease in its carbon & hydrogen content

TRUE ANSWER : ?
YOUR ANSWER : ?

Which adsorbant is used for removing sulphur compounds (S Q, H₂S, RSH etc.) removal from coke oven gas in by-products recovery plant ?

Basalt

Diatomaceous earth

Bog iron (i.e., moist ferric hydroxide)

Silica gel

TRUE ANSWER : ?
YOUR ANSWER : ?

The hottest part of the flame lies in its____zone.

Unburnt gases

Non-luminous

Yellow

Luminous

TRUE ANSWER : ?
YOUR ANSWER : ?

The internal energy of the combustion products is __________ compared to that of reactants.

More

Less

More or less ; (depends on the state of fuel.)

Equal

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following gaseous fuels is likely to have the highest gross calorific value?

LPG

Natural gas

Producer gas

Sewage gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Power alcohol as compared to straight run gasoline has lower

Calorific value

Viscosity

Octane number

Specific gravity

TRUE ANSWER : ?
YOUR ANSWER : ?

The heat of combustion of a fuel

Is always positive

Can't be known without calculating it

Is always negative

Is equal to the heat of formation

TRUE ANSWER : ?
YOUR ANSWER : ?

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