Fuels and Combustion MCQs

Question 1

Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.

Accepted Answer

Carbon monoxide

Answer

Smoke

Answer

Temperature

Answer

Oxygen

Question 2

Cannel coal and boghead coal are the examples of

Accepted Answer

Sapropelic coals

Answer

Humic coals

Answer

Liptobiolites

Answer

None of these

Question 3

The calorific value is the highest out of the following for

Accepted Answer

Coke oven gas

Answer

Producer gas

Answer

Water gas

Answer

Blast furnace gas

Question 4

Which of the following is coking?

Accepted Answer

Vitrain

Answer

Fussain

Answer

Both A & B

Answer

Neither A nor B

Question 5

Safe condition for storage of high V.M. bituminous coal is that

Accepted Answer

Both A and B

Answer

Height of the coal heap should be < 3 metres

Answer

Maximum 200 tons should be stored in a heap

Answer

Neither A nor B

Question 6

A coal having high volatile matter content will

Accepted Answer

None of these

Answer

Give less yield of tar and gas on carbonisation

Answer

Burn with a small non-smoky flame

Answer

Have a very high calorific value

Question 7

Hard coke is manufactured from

Accepted Answer

Bituminous coal

Answer

Lignite

Answer

Semi-anthracite

Answer

Anthracite

Question 8

Hard pitch is used for making

Accepted Answer

Pulverised fuel

Answer

Perfumes

Answer

Insecticides

Answer

Plastics

Question 9

Traces of tar fog present in the coke oven gas is removed by

Accepted Answer

Electrostatic precipitator

Answer

Cyclone separator

Answer

Wet packed scrubber

Answer

Washing with monoethanolamine