Chemical Process
Roasting of metallurgical ores is done mainly to

Remove arsenic & sulphur
Sinter the ore
Dehydrate it
Remove CO₂ & H₂O

ANSWER DOWNLOAD EXAMIANS APP

Chemical Process
Reverse osmosis is normally used for the

Separation of isotopes of uranium from gaseous uranium hexaflouride
Desalination of brackish water to produce potable (drinking) water
Separation of helium from natural gas
Purification of oxygen

ANSWER DOWNLOAD EXAMIANS APP