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Rooftop rainwater harvesting using underground TANKAS is traditional in:
ARajasthan (Bikaner, Phalodi, Barmer)
BKerala backwaters
CMountains of Sikkim
DSundarbans delta
Answer & Solution
Correct answer: A. Rajasthan (Bikaner, Phalodi, Barmer)
1. In semi-arid Rajasthan, every house traditionally has an UNDERGROUND TANKA in the courtyard.
2. Rainwater from sloping rooftops is channelled into the tanka through pipes.
3. Provides drinking water (palar paani) during the long dry months.
_Source: NCERT Class 10 SST Geography Ch 3 §3.5 Underground Tankas of Rajasthan_
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