Chemical Engineering - Fuels and Combustion

31. 

Which of the following is called "blue gas" ?

A. coke oven gas
B. water gas
C. natural gas
D. producer gas

Answer: Option B

Explanation:

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32. 

Caking index of a coal is a measure of its

A. abradability
B. reactivity
C. agglutinating (binding) properties
D. porosity

Answer: Option C

Explanation:

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33. 

Calorific value of furnace oil is about __________ Kcal/kg.

A. 10000
B. 15000
C. 5000
D. 20000

Answer: Option A

Explanation:

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34. 

The main product of high temperature carbonisation of coal is

A. coke
B. ammonia
C. tar
D. coke oven gas

Answer: Option A

Explanation:

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35. 

High temperature carbonisation of coal takes place at __________ °C.

A. 2000
B. 600
C. 1100
D. 1600

Answer: Option C

Explanation:

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