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Fuels and Combustion

Fuels and Combustion
Junker's calorimeter is used to determine the calorific value of

Fuel oil
Pulverised coal
Gaseous fuels
None of these

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Fuels and Combustion
Steam is intermittently admitted into the fuel bed during the production of producer gas to

Convert CO to CO₂
Minimise the chances of clinker formation
Increase the combustion rate
Increase the gas production rate

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Fuels and Combustion
Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm³ gas ?

Natural gas
Water gas
Producer gas
Blast furnace gas

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Fuels and Combustion
'Mixed gas' used in steel plants is a mixture of

F. gas and coke oven gas
Coke oven gas and L.P.G
Blast furnace gas and naphtha vapor
Coke oven gas and converter gas

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Fuels and Combustion
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

H₂
CO₂
CH₄
N₂

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Fuels and Combustion
Calorific value of bituminous coal may be around __________ Kcal/kg.

500
6500
1500
20000

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