Fuels and Combustion
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is

Much higher
Either lower or higher, depends on the type of fuel
Same
Much lower

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Cannel coal

Has a high volatile matter content and burns with a luminous smoky flame
Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
All of these
Is non-coking

ANSWER DOWNLOAD EXAMIANS APP