Fuels And Combustion - Study Mode

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[#216] Mineral matter content (M) and ash content (A) in coal are approximately related as

(A) M = 1.1A

(B) M = A

(C) M = 1.5A

(D) M = 2A

Correct Answer

(A) M = 1.1A

[#217] Calorific value of furnace oil is about __________ kcal/kg.

(A) 10000

(B) 15000

(C) 5000

(D) 20000

Correct Answer

(A) 10000

[#218] Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal?

(A) Vitrain

(B) Clarain

(C) Durain

(D) Fussain

Correct Answer

(A) Vitrain

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

(A) <120

(B) >120

(C) <90

(D) 90-110

Correct Answer

(B) >120

[#220] Percentage of nitrogen in blast furnace gas may be around

(A) 5

(B) 25

(C) 55

(D) 80

Correct Answer

(C) 55