Describe secondary treatment of sewage till can be discharged into a natural water body.</h2></div>

The protein coat of a virus is called ________________________.</h2></div>

What would happen if oxygen availability to activated sludge flocs is reduced ?<span><br> </span></…

Purified antibiotic penicillin of <i>Penicillium notatum</i> was obtained by :</h2></div>

Neurospora is a very good taxon for.</h2></div>

Citric acid used in the production of beverages, toffees, chocolates is obtained by fermentation of _______ by <i>…

Write the main constituents of biogas.</h2></div>

Give an example for a microbial biocontrol agent.</h2></div>