Which of the following is the first organic acid produced through fermentation?

Passage of effluents into oxidation tank is for</h2></div>

Rhizobium is an imprtant ......... bacterium</h2></div>

Describe the importance of microbes in human welfare.</h2></div>

Wastewater treatment generates a large quantity of sludge, which can be treated by?</h2></div>

Which of the following is generally not polluted by the use of chemical fertilisers?

The heat treatment that destroys harmful bacteria and also causes little nutrient damage is</h2></div>

Milk is a better product than curd.