Fuels

Which of the following fuel has the highest calorific value.

• Peat

     

•    Coke

     

• Bituminous coal

   

•    Anthracite coal

Which type of fuel is lignite?

• Secondary fuel

• Primary fuel

• Liquid fuel

• Gaseous fuel

How should be the ignition temperature of an ideal fuel?

• moderate

• low

• very low

• very high

Fuel should have low moisture content

• true

• False

Which of the following fuel cannot be used in the internal combustion engine?

• gasoline

• diesel

• fuel oil

• anthracite coal

Hydrogen-oxygen fuel cell can produce drinking water of potable quality.

• True

• False

Combustion reaction of fuels is a/an __________ reaction.

• auto catalytic

• exothermic

• endothermic

• none of these

Pick out the wrong statement.

• LPG is also used as fuel for automobiles & small furnaces and for cutting & welding of metals.

• The minimum temperature at which a petroleum oil vapour catches fire and continues to burn, is called its flashpoint.

• On distillation, each ton of petroleum oil produces about 30-50 Nm³ of gas.

• Maximum yield of naphthalene is obtained on distillation of crude oil

Which calorimeter is used to find calorific values of solid and liquid fuels?

• Boy’s calorimeter

• Bomb calorimeter

• Junker’s calorimeter

• Calvet-type calorimeter

What is necessary for complete combustion of fuels?

• There should be no water content in the fuel

• Sufficient amount of air is required

• High quantity of fuel

• Open space to burn easily