AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(D) Tamil Nadu
Tamil Nadu is the first state in India to make rooftop rainwater harvesting compulsory for all houses, with legal provisions to punish defaulters.
Source: Rainwater Harvesting, Chapter 3
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The passage explicitly states: "Tamil Nadu is the first state in India which has made rooftop rainwater harvesting structure compulsory to all the houses across the state. There are legal provisions to punish the defaulters." Students sometimes confuse this with Rajasthan (famous for traditional harvesting) or Meghalaya (highest practice in Shillong). The answer is directly quoted in the textbook, so memorise this fact precisely.