• When was the Ganga action plan stated launched everything about it   
• What is the significance of coliform bacteria?
• what is a spillway or weir
• what are kulhs
• is water conservation necesscary, why?
• why water conservation necessary.give reasons.sir explian for five marks
• What is the major source of fresh water for us?
• What do you mean by the term water harvesting?
• Which dam is made on river Ganga?
• Mention the names of water harvesting techniques that are used in Kerala and Utter Pradesh.

Queries asked on Sunday & after 7 pm from Monday to Saturday will be answered after 12 pm the next working day.