Chemical Engineering - Fuels and Combustion

36. 

In flue gas analysis by Orsat's apparatus, oxygen is absorbed by

A. potassium hydroxide.
B. cuprous chloride.
C. alkaline pyragllol solution.
D. none of these.

Answer: Option C

Explanation:

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37. 

Natural draft created by the chimney depends upon

A. temperature of the flue gas.
B. its height.
C. both (a) & (b).
D. neither (a) nor (b).

Answer: Option C

Explanation:

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38. 

Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the

A. hot scarfing of steel slabs.
B. mixing with blast furnace gas.
C. coke oven battery heating.
D. steel ladle drying.

Answer: Option C

Explanation:

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39. 

Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg.

A. 1000
B. 4000
C. 8000
D. 15000

Answer: Option C

Explanation:

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40. 

The most matured coal out of the following is

A. lignite
B. semi-anthracite
C. sub-bituminous
D. bituminous

Answer: Option B

Explanation:

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