Chemistry
Among the following iron ores, the highest percentage of iron content is found in–

Limnonite
Magnetite
None of these
Haemetite

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
The BOD values of water indicate the

Amount of ozone used for biochemical oxidation
Amount of oxygen used for biochemical reduction
Amount of oxygen used for biochemical oxidation
Amount of organic debris

ANSWER DOWNLOAD EXAMIANS APP