Primary treatment involves filtration and distillation.

Biogas plants are more often built in urban areas.

Which of the following is wrongly matched?</h2></div>

Which of the following options includes biofertilizers?</h2></div>

Which of the following is a pair of biofertilizer?</h2></div>

Secondary sewage treatment is mainly </h2></div>

Name a genus of baculovirus. Why are they considered good bio-control agents?</h2></div>

Which of the following is not a method by which antibiotic functions?