One kg of carbon for theoretically complete combustion requires __________ kg of air.
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Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen.
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Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is
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Presence of __________ in a dry gaseous fuel does not contribute to its calorific value.
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Insitu theory and drift theory are related to the
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During the carbonisation of coal
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Ultimate analysis of coal determines its __________ content.
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Proximate analysis of coal determines its __________ content.
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Which of the following is not a micro component present in coal?
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Narrow coke ovens as compared to wider coke ovens
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With increases in carbonisation temperature
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Coke ovens in steel plant are heated by
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Combustion reaction of fuels is a/an __________ reaction.
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Which of the following has the highest flame velocity?
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Which of the following gaseous fuels has the lowest calorific value?
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As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion __________ for the same percentage of excess air.
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Which of the following would require least amount of secondary air for combustion?
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The function of secondary combustion air is to
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KOH solution used in orsat apparatus absorbs
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When the coal is heated in absence of air, it is called its
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