Penicillin was first commercially prepared in</h2></div>

Which is used as biofertilizer?</h2></div>

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

What is the common name of Saccharomyces ellipsoidens?

First antibiotic discovered was ____________.</h2></div>

<span>Why biofertilizers are preferred to chemical fertilizers? </span></h2></div…

Which of the following statements is not true regarding BOD?

What are bio-insecticides?