Q. Which of the following would require least amount of secondary air for combustion ?

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Q. 'Fat coals' are those coals which have very high

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Q. Highly reactive coke have lower

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Q. A coal with high ash content

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Q. The shift conversion reaction taking place during water gas manufacture is given by

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Q. Which of the following is unsuitable fuel for producer gas manufacture ?

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Q. A good metallurgical coke

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Q. The main advantage of forced draft over natural draft is that

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Q. Benzene is used

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Q. Fischer-Tropsch method aims at the

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Q. To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in

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Q. Artificial draught produced by a fan can be controlled by the

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Q. Water gas constitutes mainly of

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Q. Coke made in narrower by-product coke ovens (as compared to wider ovens) is

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Q. Which of the following has the highest flame velocity ?

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Q. Which of the following constituents of a fuel does not contribute to its calorific value on combustion ?

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Q. Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces

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Q. For long flame and easy ignition, the coal used should have

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Q. Which of the following has the highest calorific value (kcal/Nm³) ?

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Q. Naphthalene is used for making

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