FUELS AND COMBUSTION QUIZ

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

West Bengal

Jharkhand

Orissa

Assam

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fuels is the best for burning on chain grate stoker?

Pulverised coal

Non-caking coal

Caking coal

Coking coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Caking index of a coal is a measure of its

Abradability

Reactivity

Porosity

Agglutinating (binding) properties

TRUE ANSWER : ?
YOUR ANSWER : ?

Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.

0.87

11.4

1.75

2.4

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum adiabatic flame temperature in air as compared to that in pure oxygen is

Same

Much lower

Either lower or higher, depends on the type of fuel

Much higher

TRUE ANSWER : ?
YOUR ANSWER : ?

Sometimes water is sprayed during coal charging in the coke oven, which helps in

Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

Prevention of clinker formation in the oven

Controlling the dust nuisance while charging the coal

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Caking

Non-caking

Pulverised

High ash

TRUE ANSWER : ?
YOUR ANSWER : ?

Narrow coke ovens as compared to wider coke ovens

Require less time of carbonisation

Produce stronger coke

Produce smaller coke

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

Anthracene & creosote

Phenol & naphthalene

Benzol & pitch

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a single stage, fixed bed high pressure coal gasification process?

Kopper-Totzek process

Lurgi Process

Winkler process

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?