FUELS AND COMBUSTION QUIZ

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

950

500

1100

750

TRUE ANSWER : ?
YOUR ANSWER : ?

Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

300

5000

2000

10000

TRUE ANSWER : ?
YOUR ANSWER : ?

Yield of pitch from distillation of high temperature tar is around __________ percent.

90

25

65

10

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Draught to be created

Limitation of constructional facilities

Pollution control aspect

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Percentage of nitrogen in blast furnace gas may be around

55

25

80

5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is used for making the explosive 'TNT'?

Toluene

Benzol

Cerosote

Pyridine

TRUE ANSWER : ?
YOUR ANSWER : ?

Caking coal is desirable for

All of these

Burning on firebars

Coke making

Burning on travelling grate

TRUE ANSWER : ?
YOUR ANSWER : ?

Oxygen percentage (by weight) in atmospheric air is

23

21

29

19

TRUE ANSWER : ?
YOUR ANSWER : ?

During combustion of coal on grate, clinker formation is increased by the

All of these

Low fusion point of ash (< 1100° C)

Use of preheated primary air

Use of thick fire bed

TRUE ANSWER : ?
YOUR ANSWER : ?

Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.

>120

90-110

TRUE ANSWER : ?
YOUR ANSWER : ?

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