FUELS AND COMBUSTION QUIZ

A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.

3 to 4

20 to 40

1 to 2

5 to 15

TRUE ANSWER : ?
YOUR ANSWER : ?

The advantage of firing pulverised coal in the furnace lies in the fact, that it

Permits the use of high ash content coal

All of these

Accelerates the burning rate and economises on fuel combustion

Permits the use of low fusion point ash coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Volatile matter content of metallurgical coke may be around __________ percent.

22-26

30-33

10-15

1-2

TRUE ANSWER : ?
YOUR ANSWER : ?

Hard coke is manufactured from

Semi-anthracite

Anthracite

Bituminous coal

Lignite

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace gas is a very poisonous gas because of its predominantly high __________ content.

CO

CH₄

H₂O

CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

A travelling grate stoker is meant for the efficient burning of __________ coal.

Non-caking

Caking

High ash

Pulverised

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a product of tar distillation?

None of these

Phenol & naphthalene

Benzol & pitch

Anthracene & creosote

TRUE ANSWER : ?
YOUR ANSWER : ?

A coal with high __________ content, would ignite most easily.

Oxygen

Volatile matter

Ash

Fixed carbon

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is unsuitable fuel for producer gas manufacture?

Anthracite

Coal having high fusion point of its ash

Coal having low fusion point of its ash

Coke

TRUE ANSWER : ?
YOUR ANSWER : ?

When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

Oxidation

Carbonisation

Gasification

Coalification

TRUE ANSWER : ?
YOUR ANSWER : ?

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