A. Classified
B. Carbonised
C. Caking
D. Non-caking
Correct Answer: Caking ✔
Last Updated: March 08, 2019
Related MCQs
- Main use of soft coke is as __________ fuel?
- Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm3/ton coal (ash = 35%)?
- Height of coke oven is limited (say maximum upto 7 metres) mainly by the__________?
- Steam is intermittently admitted into the fuel bed during the production of producer gas to__________?
- Which of the following coke has the least percentage of ash ?
- The weathering index of a coal__________?
- Blast furnace gas is a very poisonous gas because of its predominantly high __________ content?
- Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen?
- Adiabatic flame temperature of a fuel is dependent on the initial temperature of__________?
- Main constituents of Benzol are __________?
- Gobar gas is produced by the __________ of cow dung?
- Hard pitch is used for making__________?
- Undercharging of coal in the by-product coke ovens results in __________?
- Benzol is used__________?
- Pulverised coal used in boiler firing need not have__________?
- Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg?
- About __________ Nm3 of air will be required for the complete combustion of 2Nm3 of CO?
- Fischer-Tropsch method aims at the __________?
- In flue gas analysis by Orsat’s apparatus, carbon dioxide is absorbed by__________?
- Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C ?
- Producer gas comprises mainly of __________?
- Coke compared to the coal from which it has been made, contains __________?
- Main constituents of purified Lurgi gas are__________?
- Which of the following is coking ?
- Compound coke ovens are those which can be heated by __________?
- Out of the following fuels, the difference between the net and gross calorific value is maximum in case of__________?
- Calorific value of __________?
- __________ present in coal is not determined in its ultimate analysis ?
- Coke made in narrower by-product coke ovens (as compared to wider ovens) is __________?
- Gray King Assay and Swelling Index of a coal is a measure of its __________?
- Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about __________ percent as compared to the use of atmospheric combustion air?
- In low temperature carbonisation of coal, the__________?
- Which of the following is a single stage, fixed bed high pressure coal gasification process ?
- Blast furnace gas constitutes mainly of__________?
- 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 __________?
- Washing of coal does not reduce its__________?
- Preheating of coal charge for the coke ovens reduces the __________?
- Which of the following gaseous fuels has the highest net calorific value (kcal/Nm3) ?
- Width of the coke oven towards coke side is slightly more than that on pusher side to__________?
- Natural draught produced by a chimney depends upon the __________?
- Highly reactive coke have lower __________?
- __________ prohibits the use of alcohols directly in petrol engines ?
- Volumetric ratio of N2 to O2 in dry atmospheric air is __________?
- Bituminous coal__________?
- Washing of coal __________?
- Coalification means the __________?
- The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always __________?
- Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if __________?
- If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be__________?
- The main advantage of forced draft over natural draft is that__________?
- Oxygen percentage (by weight) in atmospheric air is__________?