In biological oxidation process, depending on the organic load, the oxidation takes place ___________
a) 1-4Hours b) 4-8Hours c) 8-16Hours d) 16-20Hours
a) 1-4Hours b) 4-8Hours c) 8-16Hours d) 16-20Hours
a) 100% b) 99% c) 98% d) 97%
a) Assessing the immediate water quality b) Development activities in the region c) Determination of flow increase d) Colour of the water
a) sea pollution b) River pollution c) Lake pollution d) Tank pollution
a) Water b) Nitrogen c) Carbondioxide d) Oxygen
a) True b) False