Fuels and Combustion Naphthalene is used for making Drug intermediates e.g. β-naphthol All of these Unsaturated polyesters Insecticides (e.g. moth balls) Drug intermediates e.g. β-naphthol All of these Unsaturated polyesters Insecticides (e.g. moth balls) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In Lurgi coal gasifier, Low carbon conversion efficiency is achieved Larger quantity of coal can be processed Coking coals cannot be used Entrainment of solids is higher Low carbon conversion efficiency is achieved Larger quantity of coal can be processed Coking coals cannot be used Entrainment of solids is higher ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which is the most matured coal? Bituminous Anthracite Lignite Semi-anthracite Bituminous Anthracite Lignite Semi-anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the Presence of large quantity of hydrogen in the fuel Lack of thorough mixing of fuel with air High sulphur content in the fuel Low calorific value of the fuel Presence of large quantity of hydrogen in the fuel Lack of thorough mixing of fuel with air High sulphur content in the fuel Low calorific value of the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Both A & B Neither A nor B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a binder for coal briquetting? None of these Molasses Coal tar Bitumen None of these Molasses Coal tar Bitumen ANSWER DOWNLOAD EXAMIANS APP
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