Q. Consider the following statements regarding tankas in Rajasthan:

1. The semi-arid and arid regions of Rajasthan had underground tanks or tankas for storing drinking water.
2. The tankas were part of a well-developed rooftop rainwater harvesting system.
3. The first spell of rain was specially collected for storing in tankas.

Which of the above statements is/are correct?
Answer: Only 1 and 2
Notes: Statements 1 and 2 are correct: Tankas in Rajasthan were underground tanks used to store drinking water, often forming part of rooftop rainwater harvesting systems. Statement 3 is incorrect because the first spell of rain was generally not collected—its purpose was to clean the roofs and pipes. Rainwater from later showers was stored in the tankas for drinking use.