Chemical Engineering - Fuels and Combustion

41. 

Adiabatic flame temperature of a fuel is dependent on the initial temperature of

A. fuel
B. air
C. both (a) & (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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42. 

Which of the following gaseous fuels has the lowest calorific value ?

A. Gobar gas
B. Refinery gas
C. Converter gas
D. Blast furnace gas

Answer: Option D

Explanation:

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43. 

Which of the following is not a by-product recovered in a high temperature coal carbonisation plant ?

A. Benzol
B. Pitch-cresosote mixture (PCM)
C. Napthalene
D. Ethylene

Answer: Option D

Explanation:

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44. 

Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.

A. <120
B. >120
C. <90
D. 90-110

Answer: Option B

Explanation:

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45. 

In high temperature carbonisation of coal compared to low temperature carbonisation

A. yield of ammonia is less.
B. aromatic content of tar is low.
C. H2 content in the coke oven gas is more.
D. calorific value of the coke oven gas is lower.

Answer: Option C

Explanation:

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