Which is wrongly matched?</h2></div>

<i>Rhizobium </i>fixes atmospheric _____________</h2></div>

Why the efficacy of Biogas is less than Natural gas.</h2></div>

Benzo-diazepene is an?</h2></div>

Which of the following statements is not true regarding BOD?

With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).<br> </h2></d…

What is the height of the concrete tank used in biogas plant?

Which gas is produced during anaerobic fermentation of agricultural wastes?</h2></div>