FUELS AND COMBUSTION QUIZ

Percentage of methane in coke oven gas may be around

50

15

25

5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the maximum coal producing state in India?

West Bengal

Orissa

Assam

Jharkhand

TRUE ANSWER : ?
YOUR ANSWER : ?

Ignition temperature of a fuel in air is __________ that in pure oxygen.

More than

Either more or less; depends on the type of fuel

Less than

Equal to

TRUE ANSWER : ?
YOUR ANSWER : ?

Most of the coking coals are

Anthracite

None of these

Lignite

Bituminous

TRUE ANSWER : ?
YOUR ANSWER : ?

The calorific value is the highest out of the following for

Blast furnace gas

Producer gas

Water gas

Coke oven gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Stack (chimney) height in a big thermal power plant is dictated by the

Pollution control aspect

Limitation of constructional facilities

Draught to be created

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Calorific value of tar is about __________ Kcal/kg.

5000

16000

12000

8800

TRUE ANSWER : ?
YOUR ANSWER : ?

Narrow coke ovens as compared to wider coke ovens

All of these

Produce smaller coke

Produce stronger coke

Require less time of carbonisation

TRUE ANSWER : ?
YOUR ANSWER : ?

A coal with high ash content

Is harder and stronger

Has low quantity of mineral matter

Is not subjected to washing

Has higher calorific value

TRUE ANSWER : ?
YOUR ANSWER : ?

When the coal is heated in absence of air, it is called its

Gasification

Coalification

Deoxidation

Carbonisation

TRUE ANSWER : ?
YOUR ANSWER : ?

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