Fuels and Combustion Coking coals are invariably Semi-anthracites Bituminous coals Anthracites Lignites Semi-anthracites Bituminous coals Anthracites Lignites ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Desirable "Micum Index" values of metal-lurical coke are M40 > 10% and M10 < 78% M40 > 98% and M10 < 2% M40 > 78% and M10 < 10% M40 > 4% and M10 < 80% M40 > 10% and M10 < 78% M40 > 98% and M10 < 2% M40 > 78% and M10 < 10% M40 > 4% and M10 < 80% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Most of the coking coals are Lignite None of these Bituminous Anthracite Lignite None of these Bituminous Anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Natural draught produced by a chimney depends upon the Density of the chimney gases Height of the chimney Neither A nor B Both A & B Density of the chimney gases Height of the chimney Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During the carbonisation of coal All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C All tar is evolved at < 600°C Hard semi-coke starts shrinking at 600°C All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C All tar is evolved at < 600°C Hard semi-coke starts shrinking at 600°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High temperature in gasification of coal favours High production of CO₂ High production of CO Both B and C Low production of CO₂ High production of CO₂ High production of CO Both B and C Low production of CO₂ ANSWER DOWNLOAD EXAMIANS APP