Correct answer: (d) Water reservoirs
Explanation
- A
Recently discovered uranium deposits
(a) Recently discovered uranium deposits. These names are not India’s uranium news sites (compare Tummalapalle, Jaduguda), so this is not the key.
- B
Tropical rain forests
(b) Tropical rain forests. Aliyar is in Tamil Nadu’s Anamalais irrigation belt, Isapur in Maharashtra, Kangsabati in West Bengal — not a shared rainforest identity, so this is not the key.
- C
Underground cave systems
(c) Underground cave systems. Not what these three share, so this is not the key.
- D
Water reservoirs
(d) Water reservoirs. Aliyar (Tamil Nadu), Isapur (Maharashtra) and Kangsabati (West Bengal) are dam/reservoir projects. That common identity is the official key.
Summary. Official key is (d) water reservoirs. Three irrigation reservoirs in three States, not a uranium, rainforest or cave set. Honour the stored letter (d).
Same topic · past papers
UPSC has asked this before
These previous-year questions sit on the same topic. Open one to practise the earlier ask.
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2017 · Q19 · General Studies · 2 marks
At one of the places in India, if you stand on the seashore and watch the sea, you will find that the sea water recedes from the shore line a few kilometres and comes back to the shore, twice a day, and you can actually walk on the sea floor when the water recedes. This unique phenomenon is seen at