AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Khadins are agricultural fields converted into rain-fed storage structures where water is allowed to stand and moisten the soil. They are found in Jaisalmer.
Johads are similar rain-fed storage structures used in other parts of Rajasthan.
Both are used in arid and semi-arid regions of Rajasthan.
Source: Water Resources, Chapter 3
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The passage does not give elaborate separate definitions for khadins and johads — both are described together as "agricultural fields converted into rain-fed storage structures that allowed the water to stand and moisten the soil." The only distinction the textbook makes is location: khadins → Jaisalmer; johads → other parts of Rajasthan. Do not invent additional differences. Examiners award marks for correctly naming both structures, their shared function, and their landscape (arid/semi-arid). Keep it brief — this is a 2-mark answer.