Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Hydrosphere Water Conservation
Which of the statements is not correct regarding stepwells found in many parts of India?
1
They are traditional systems of water conservation
2
The water in stepwells cannot be used for drinking
3
They are based on principle of rainwater harvesting and recharging
4
More than one of the above
5
None of the above