Calorific value of blast furnace gas is around __________ KCal/Nm3 . (A) 850 (B) 1800 (C) 4200 (D) 6500

Calorific value of blast furnace gas is around __________ KCal/Nm3
.
(A) 850
(B) 1800
(C) 4200
(D) 6500
by

1 Answer

Answer :

(A) 850
by

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Last Answer : (B) 4200

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Dust content in raw blast furnace gas is about __________ gm/Nm3 ; hence it is cleaned to the dust level of about < 10 mg /Nm3 before use. (A) 15-30 (B) 1-2 (C) 70-100 (D) 150-200

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Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg. (A) 1000 (B) 4000 (C) 8000 (D) 15000

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Description : In a heat treatment shop, steel components are heat-treated in batches of 80 Tons. The  heat treatment cycle is as follows;  Increase temperature from 30 OC to 850 OC in 3 hours.  ... efficiency of 80%, for same requirement. The investment towards installation of  the new furnace is Rs. 50

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Last Answer : (B) 4000

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Last Answer : (D) May increase or decrease, depends on combustibles

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Description : Heating value of coal is approximately (A) 1000-2000 kcal / kg (B) 2000-4000 kcal / kg (C) 5000-6500 kcal / kg (D) 9000-10,500 kcal / kg

Last Answer : Ans: C

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Description : Heating value of coal is approximately in power plant (A) 1000-2000 kcal / kg (B) 2000-4000 kcal / kg (C) 5000-6500 kcal / kg (D) 9000-10,500 kcal / kg.

Last Answer : 5000-6500 kcal / kg

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Last Answer : (D) L.P.G. is lighter than air

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Last Answer : (B) 900-1000

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Last Answer : (A) 8800

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Abrasion index of blast furnace coke should be around __________ percent. (A) 20 (B) 35 (C) 55 (D) 80

Description : Abrasion index of blast furnace coke should be around __________ percent. (A) 20 (B) 35 (C) 55 (D) 80

Last Answer : (D) 80

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Description : Percentage of nitrogen in blast furnace gas may be around (A) 5 (B) 25 (C) 55 (D) 80

Last Answer : (C) 55

Percentage of carbon monoxide in blast furnace gas may be around (A) 8 (B) 14 (C) 22 (D) 52

Description : Percentage of carbon monoxide in blast furnace gas may be around (A) 8 (B) 14 (C) 22 (D) 52

Last Answer : (C) 22

The temperature in the calcium carbide furnace is __________ °C. (A) 200-300 (B) 700-850 (C) 2000-2200 (D) 4000-4500

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Last Answer : (C) 2000-2200

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