34201. Which is the heaviest fuel gas out of the following ?
34202. For every 10% increase in the excess air; the fuel consumption increases by __________ percent.
34203. Fusion point of coal ash increases with increase in its __________ content.
34204. Dublin Core is related to:
34205. Dry air required to burn 1 kg of carbon completely may be around __________ kg.
34206. Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is
34207. Softening temperature of coal ash is a measure of the __________ of coal.
34208. A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be
34209. Presence of phosphorous in metallurgical coal
34210. Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm.
34211. 'Fat' coal means a coal having
34212. Atomising steam to fuel oil ratio in a burner should be around
34213. Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO2, 20%CO and 10%O2. The percent excess oxygen used is
34214. Oxygen percentage (by weight) in atmospheric air is
34215. __________ of the coal is the basis for Seylor's coal classification.
34216. Main constituents of benzol are
34217. "Overfire burning" in a furnace is a phenomenon characterised by the
34218. Yield of pitch from distillation of high temperature tar is around __________ percent.
34219. Fuel consumption in coke making can be reduced by
34220. During combustion of coal on grate, clinker formation is increased by the
34221. If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be
34222. The calorific value of 'LPG' (50% propane + 50% butane) is about __________ kcal/Nm3.
34223. Washing of coal decreases its
34224. Which of the following petrographic constituents of coal is non-coking ?
34225. __________ has the widest inflammability limit (explosion limit) of all the gases.
34226. Percentage of methane in coke oven gas may be around
34227. Orsat apparatus
34228. In flue gas analysis by Orsat's apparatus, carbon dioxide is absorbed by
34229. Caking index of the coal blend used for the manufacture of metallurgical coke should be around
34230. The standard size of a catalogue card is:
34231. The first Thesaurus published in the world is:
34232. Presence of free moisture in coal is most disadvantageous during
34233. The heat of combustion of a fuel
34234. High excess air in combustion of fuels results in
34235. Abrasion index of blast furnace coke should be around __________ percent.
34236. Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.
34237. Cannel coal and boghead coal are the examples of
34238. Which of the following combustibles is absent in blast furnace gas ?
34239. The calorific value of producer gas is around __________ kcal/Nm3
34240. About __________ Nm3 of air will be required for the complete combustion of 2Nm3 of CO.
34241. Coking time in beehive coke oven is about
34242. Which of the following has the highest calorific value ?
34243. __________ present in coal is not determined in its ultimate analysis.
34244. The calorific value of L.D. converter gas is about __________ Kcal/Nm3 .
34245. __________ prohibits the use of alcohols directly in petrol engines.
34246. Higher fuel combustion efficiency can not be achieved by
34247. With increase in C/H ratio of a fuel, the amount of CO2 formed on its complete combustion
34248. Which of the following is the maximum coal producing state in India ?
34249. Height of coke oven is limited (say maximum upto 7 metres) mainly by the
34250. Out of the following fuels, the difference between the net and gross calorific value is maximum in case of
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