Rishikesh is famous for the production of _______________.</h2></div>

Besides paddy fields, cyanobacteria are also found inside vegetative part of : </h2></div>

How can sewage be used to generate biogas? Explain.</h2></div>

Which of the following act as a biofertilizers?</h2></div>

Which of the following is not correct regarding the primary treatment of waste-water?

Waste water treatment generates a large amount of sludge, which can be treated by</h2></div>

Bacteria involved in formation of gobar gas are</h2></div>

Which one of the following is not used in organic farming?</h2></div>