Fuels and Combustion
For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

F. gas and coke oven gas
Propane and LPG
Sewage gas and gobar gas
Propane and acetylene

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Low temperature carbonisation

Is meant for the production of 'metallurgical coke'
Is mainly for producing the smokeless domestic coke
Produces higher quantity of gas than high temperature carbonisation
Produces less quantity of tar than high temperature carbonisation

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Lignite is

A coking coal
A high rank coal
Can be used for gasification and steam generation
A black banded coal which burns with a non-smoky yellowish flame

ANSWER DOWNLOAD EXAMIANS APP