Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

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51.
Hard pitch is used for making

A. Pulverised fuel

B. Perfumes

C. Insecticides

D. Plastics

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52.
Traces of tar fog present in the coke oven gas is removed by

A. Cyclone separator

B. Wet packed scrubber

C. Electrostatic precipitator

D. Washing with monoethanolamine

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53.
Which of the following has the highest heat of combustion?

A. H₂

B. CO

C. CH₄

D. C₂H₆

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54.
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

A. 2CO ⟷ C + CO₂

B. CO + H₂O ⟷ CO₂ + H₂

C. C + H₂O ⟷ CO + H₂

D. C + 2H₂O ⟷ CO₂ + 2H₂

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55.
Overfire burning in a furnace is a phenomenon characterised by the

A. Supply of excess fuel

B. Supply of excess air

C. Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air

D. None of these

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56.
Which of the following has the highest theoretical flame temperature ?

A. Blast furnace gas

B. Hydrogen

C. Acetylene

D. Coke oven gas

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57.
Fischer-Tropsch method aims at the

A. Gasification of coal

B. Synthesis of gasoline (from water gas)

C. Hydrogenation of coal to produce gasoline

D. None of these

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58.
The liquid used for the washing of coal in an industrial coal washery is a mixture of water and

A. Carbon tetrachloride

B. Sand (40%)

C. Mineral oil of high viscosity & specific gravity (1.6)

D. None of these

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59.
A coal having high amount of volatile matter

A. Would require smaller combustion chamber

B. Produces very little of tar and gas on carbonisation

C. Ignites easily and burns with long smoky flame

D. All of the above

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60.
High ash coals

A. Are soft & friable (poor strength and size stability)

B. Require longer time of carbonisation as ash offers resistance to heat transfer

C. Produce larger quantity of coke oven gas

D. None of these

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Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

51. Hard pitch is used for making

Answer & Solution

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

Answer & Solution

53. Which of the following has the highest heat of combustion?

Answer & Solution

54. Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

Answer & Solution

55. Overfire burning in a furnace is a phenomenon characterised by the

Answer & Solution

56. Which of the following has the highest theoretical flame temperature ?

Answer & Solution

57. Fischer-Tropsch method aims at the

Answer & Solution

58. The liquid used for the washing of coal in an industrial coal washery is a mixture of water and

Answer & Solution

59. A coal having high amount of volatile matter

Answer & Solution

60. High ash coals

Answer & Solution

Read More Section(Fuels and Combustion)

51.
Hard pitch is used for making

52.
Traces of tar fog present in the coke oven gas is removed by

53.
Which of the following has the highest heat of combustion?

54.
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

55.
Overfire burning in a furnace is a phenomenon characterised by the

56.
Which of the following has the highest theoretical flame temperature ?

57.
Fischer-Tropsch method aims at the

58.
The liquid used for the washing of coal in an industrial coal washery is a mixture of water and

59.
A coal having high amount of volatile matter

60.
High ash coals