What is hybrid vehicle technology? Expalin is advantages with a suitable example?</h2></div>

Which book written by Rachel Carson resulted in banning DDT in USA?<span><br> </span></h2></d…

A river/ lake with an inflow of domestic sewage rich in organic waste may result in</h2></div>

Good ozone is found in </h2></div>

Limit of BOD prescribed by Central Pollution Control Board, for the discharge of industrial and municipal waste waters i…

Which of the following is used in organic farming?</h2></div>

Which of the following is not a green-house gas?<br> </h2></div>

Biochemical oxygen demand measures</h2></div>