Which of the following is not a 'manufactured' fuel? (A) LPG (B) Coal briquettes (C) Tar (D) Colloidal fuels

Which of the following is not a 'manufactured' fuel?
(A) LPG
(B) Coal briquettes
(C) Tar
(D) Colloidal fuels
by

1 Answer

Answer :

(C) Tar
by

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During the carbonisation of coal (A) All tar is evolved at < 600°C (B) Evolution of H2 and formation of methane and aromatics occur at > 700°C (C) Hard semi-coke starts shrinking at 600°C (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

In low temperature carbonisation of coal, the(A) Yield of coke oven gas is 290 Nm3/ton dry coal(B) Volatile matter in coke is zero(C) Temperature maintained is 700°C(D) Yield of tar is about 3% of dry coal

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Which of the following is not a binder for coal briquetting? (A) Coal tar (B) Bitumen (C) Molasses (D) None of these

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In high temperature carbonisation of coal compared to low temperature carbonisation (A) Yield of ammonia is less (B) Aromatic content of tar is low (C) H2 content in the coke oven gas is more (D) Calorific value of the coke oven gas is lower

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Last Answer : (C) H2 content in the coke oven gas is more

Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas? (A) Water (B) Naphtha (C) Tar (D) Coal/coke oven gas

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Last Answer : (D) 94

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Last Answer : (C) It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop

The terminology 'BTX' used in coal tar distillation industry refers to (A) Benzol-toluol-xylol (B) Benzol-toluene-xylene (C) Benzene-toluol-xylol (D) Benzene-toluene-xylene

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Last Answer : (D) Benzene-toluene-xylene

The yield of tar from high temperature carbonisation of dry coal is about __________ percent. (A) 3 (B) 12 (C) 22 (D) 0.3

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Last Answer : (A) 3

The main product of high temperature carbonisation of coal is (A) Coke (B) Ammonia (C) Tar (D) Phenol

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Which of the following is not a product of coal tar distillation? (A) Anthracene (B) Creosote oil (C) Carbolic oil (D) None of these

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Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is __________ centistokes (or 100 Redwood I seconds). (A) 5 (B) 25 (C) 50 (D) 100

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Tar is a better fuel than furnace oil, because of its (A) Higher calorific value (B) Lower sulphur content (C) Higher emissivity (0.8-0.9) resulting in higher radiation heat transfer rate (D) Both (A) and (B)

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