Concept:
- A nuclear station needs a very large and steady supply of cooling water, which is why most of them stand on a coast or beside a major river.
- Applying that rule to Maharashtra points to one stretch of coast.
Step 1: Work out where such a plant must stand.
The reactor produces great heat, and huge quantities of water are needed to carry that heat away. A coastal site solves the problem permanently, since the sea never runs dry.
Step 2: Apply it to Maharashtra.
Maharashtra faces the Arabian Sea on its western side, so the plant has to be somewhere along that coast rather than inland on the Deccan plateau.
Step 3: Name the site.
That site is
Tarapur, on the coast north of Mumbai, the oldest nuclear power station in the country.
Step 4: Check it against the other states.
Kalpakkam is the coastal plant of Tamil Nadu, Kakrapara belongs to Gujarat, Kaiga to Karnataka, Narora to Uttar Pradesh and Rawatbhata to Rajasthan. Tarapur is the one in Maharashtra.
Final Answer: The nuclear power plant of Maharashtra is at Tarapur.