Teacher explained her students about khadin system. It is an ingenious construction designed to harvest surface runoff water for agriculture. Its main feature is a very long (100-300m) earthen embankment built across the lower hill slopes lying below gravelly uplands.Sluices and spillways allow excess water to drain off.1. What is khadin system?a. Construction designed to harvest surface runoff water for agriculture.b. Pipe lines from oceans to landsc. Rainwater drawn from top of housed. Water taken out from grounds2. What is saline area in khadin system?a. Ocean waterb. Area related to saltc. mixing salt in waterd. None of the above3. Where are Khadins found?a. Haryanab. Rajasthanc. Both A and Bd. None of the above4. What are the advantages of using khadin system of rainwater harvesting?a. It gives local people over their local water resources.b. It ensures that mismanagement and over exploitation of the resources is reduced/removed.c. Water spreads to recharge wells.d. All of the above5. In which area khadin are used for storing water?a. Rajasthanb. Telanganac. Himachal Pradeshd. Kerala