FUELS AND COMBUSTION QUIZ

Calorific value of furnace oil is about __________ Kcal/kg.

15000

5000

10000

20000

TRUE ANSWER : ?
YOUR ANSWER : ?

Caking index of coal blend used for blast furnace coke making is about

8

12

22

36

TRUE ANSWER : ?
YOUR ANSWER : ?

Number of macrocomponents present in coal according to Stopes are

Two

Six

Four

Five

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Higher C/H ratio

Calorific value

Difference in gross & net calorific value

Sulphur content

TRUE ANSWER : ?
YOUR ANSWER : ?

A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be

Same

Data insufficient; can't be predicted

Less

More

TRUE ANSWER : ?
YOUR ANSWER : ?

The most matured coal out of the following is

Semi-anthracite

Sub-bituminous

Bituminous

Lignite

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following coal gasification processes will produce gas having maximum methane content?

Kopper-Totzek process

Lurgi process

Winkler process

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace gas compared to coke oven gas has

Lower theoretical flame temperature

Lower ignition temperature

Higher calorific value

Narrower limit of inflammability

TRUE ANSWER : ?
YOUR ANSWER : ?

Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as

M = A

M = 1.1 A

M = 1.8 A

M = 0.5 A

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen.

Higher than

Lower than

Same as

Not related to

TRUE ANSWER : ?
YOUR ANSWER : ?

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