Chemical Engineering - Fuels and Combustion

46. 

With increase in C/H ratio of a fuel, the amount of CO2 formed on its complete combustion

A. increases
B. decreases
C. remains same
D. either (a) or (b), depends on other factors

Answer: Option A

Explanation:

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47. 

Which of the following is the maximum coal producing state in India ?

A. Orissa
B. West Bengal
C. Jharkhand
D. Assam

Answer: Option C

Explanation:

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48. 

Height of coke oven is limited (say maximum upto 7 metres) mainly by the

A. problem of uniform heating along its height.
B. structural strength of silica bricks.
C. problem in door cleaning.
D. buckling of ram of pusher car at the time of coke pushing.

Answer: Option A

Explanation:

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49. 

Out of the following fuels, the difference between the net and gross calorific value is maximum in case of

A. pitch
B. fuel oil
C. blast furnace gas
D. bituminous coal

Answer: Option B

Explanation:

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50. 

The hottest part of the flame lies in its____zone.

A. non-luminous
B. luminous
C. yellow
D. unburnt gases

Answer: Option A

Explanation:

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