chemical-engineering-fuels-and-combustion Related Question Answers
201. Which of the following is unsuitable fuel for producer gas manufacture ?
202. A good metallurgical coke
203. The main advantage of forced draft over natural draft is that
204. Benzene is used
205. The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal.
206. Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.
207. The optimum percentage of excess air for combustion depends upon the __________ of the fuel.
209. "Micum Index" of a coke is a measure of its
210. 'Wind loss' resulting from unscientific storage of coal may be the order of about __________ percent.
212. The main function of primary air in pulverised coal fired burner is to
214. Fischer-Tropsch method aims at the
215. To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in
216. Artificial draught produced by a fan can be controlled by the
218. Coke made in narrower by-product coke ovens (as compared to wider ovens) is
220. Steam is intermittently admitted into the fuel bed during the production of producer gas to
221. In general, the limit of inflammability/explosion limit of fuel gases is widened by the
222. Caking coal is desirable for
223. Blast furnace gas compared to coke oven gas has
224. Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature ?
225. Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the
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