33752. Which of the following is a rich fuel gas ?
33753. Low temperature carbonisation of coal produces
33754. Sulphur in metallurgical coal
33755. L.D. converter gas (produced in steel plant) comprises mainly of
33756. Main constituents of purified Lurgi gas are
33757. Catalyst used in Fischer-Tropsch process is
33758. Which of the following coal gasification processes will produce gas having maximum methane content ?
33759. Which will have the least volatile matter and hence will be the most difficult to ignite?
33760. Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent.
33761. As time passes, the calorific value of stored coal
33762. Stack (chimney) height in a big thermal power plant is dictated by the
33763. A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon
33764. Which of the following fuels is the best for burning on chain grate stoker ?
33765. The cuprous chloride used in orsat apparatus can absorb
33766. Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher
33767. Mott and Wheeler test is conducted on coke to find its
33768. The pyragallol solution used in orsat apparatus can absorb
33769. Gray-King Assay and Roga Index of coal is a measure of its
33770. While the first commercial low temperature coal carbonisation plant is located at Neyveli (in Chennai), the second such plant has been built at
33771. Low temperature oxidation of coal resulting from bad storage conditions does not decrease its
33772. Main use of soft coke is as __________ fuel.
33773. Desirable "Micum Index" values of metal-lurical coke are
33774. In low temperature carbonisation of coal, the
33775. Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if
33776. Coking time in narrow by-product coke ovens is around __________ hours.
33777. Blast furnace gas is a very poisonous gas because of its predominantly high __________ content.
33778. Which of the following is a lean fuel gas ?
33779. Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm3 gas ?
33780. High rate of heating of coke ovens
33781. A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.
33782. Coalification means the
33783. Hard coke is manufactured from
33784. Percentage of nitrogen in blast furnace gas may be around
33785. Very __________ coals are completely devoid of cokability i.e, it is non coking.
33786. Nitrogen in coal
33787. Advantages of fluidised bed combustion are
33788. The fuel ratio of a coal is
33789. Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.
33790. Which of the following is not endothermic?
33791. High sulphur content in a fuel __________ of the flue gases.
33792. Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.
33793. Fuel combustion is never cent per cent efficient due to
33794. Traces of tar fog present in the coke oven gas is removed by
33795. Ionisation potential applied across the electrodes of electrostatic tar precipitator is around
33796. Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its
33797. Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is
33798. Benzol is used
33799. A travelling grate stoker is meant for the efficient burning of __________ coal.
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