FUELS AND COMBUSTION QUIZ

The shift conversion reaction taking place during water gas manufacture is given by

CO + H₂O ⟷ CO₂ + H₂

None of these

C + 2H₂O ⟷ CO₂ + 2H₂

C + H₂O ⟷ CO + H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher

Calorific value

Higher C/H ratio

Difference in gross & net calorific value

Sulphur content

TRUE ANSWER : ?
YOUR ANSWER : ?

The calorific value of producer gas is around __________ kcal/Nm³

4500

1300

500

9000

TRUE ANSWER : ?
YOUR ANSWER : ?

Soft coke is not

Used in blast furnaces

None of these

Produced by low temperature carbonisation of coal

A domestic fuel

TRUE ANSWER : ?
YOUR ANSWER : ?

Shatter index of the coke is a measure of its

Reactivity

Bulk density

Strength

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

With increase in calorific value of fuels, their adiabatic flame temperatures

Remain unchanged

May increase or decrease ; depends on the quantity of products of combustion

Decrease

Increase

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace gas compared to coke oven gas has

Higher calorific value

Lower ignition temperature

Lower theoretical flame temperature

Narrower limit of inflammability

TRUE ANSWER : ?
YOUR ANSWER : ?

Bituminous coal

Ignites less easily than anthracite

Both B and C

Burns with smoky yellow flame

Is generally coking

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following can be made into briquettes without the use of a binder?

Anthracite coal

Bituminous coal

Lignite

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

3

5

1

2

TRUE ANSWER : ?
YOUR ANSWER : ?

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