34151. A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that
34152. Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.
34153. Light oil whose major component is benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C.
34154. In FID/CCC,CCC stands for:
34155. With increase in C/H ratio of a fuel, the dew point of flue gases
34156. Calorific value of tar is about __________ Kcal/kg.
34157. Efficiency of the combustion of a fuel is judged by the __________ the flue gas.
34158. Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm.
34159. Rate of low temperature oxidation of coal due to bad storage conditions
34160. In which indexing system Roleoperator is used:
34161. Preheating of __________ the flame temperature.
34162. Which of the following has the highest heat of combustion?
34163. Calorific value of wood gas is about __________ kcal/Nm3.
34164. Which adsorbant is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant ?
34165. Temperature of coke oven gas just before entering into saturator (for recovery of NH3) is about __________ °C.
34166. A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the reminder going to CO, the Orsat analysis in volume percent is
34167. Which of the following would require maximum amount of % excess air for complete combustion ?
34168. During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the
34169. Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain
34170. Low temperature oxidation of coal is accelerated by the
34171. With increase in calorific value of fuels, their adiabatic flame temperatures
34172. Coal tar fuel - 200 (CTF 200) is a mixture of
34173. Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm3.
34174. High pressure coal gasification is employed in __________ process.
34175. Flue gas from the heating chamber of byproduct coke ovens is removed by
34176. Octane number of 2, 2, 4 - trimethyl pen-tane is
34177. Which of the following has the highest flame speed ?
34178. Coke ovens in steel plant are heated by
34179. Coke oven gas is a better fuel than blast furnace gas, because of its higher
34180. Short/intense flame is produced during combustion of gaseous fuel by using
34181. By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of
34182. In ISBD(ER),ER stands for:
34183. Coke oven gas compared to blast furnace gas is
34184. Hardgrove grindability index of four coal samples are given below. Which of them is the easiest to grind ?
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