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The correct answer is option 2, Sriharikota. Sriharikota does not have a heavy water plant.
A heavy water plant is a facility that produces heavy water, which is a form of water that contains a higher concentration of the isotope deuterium. Heavy water is primarily used as a moderator in nuclear reactors.
Option 1, Narora, does have a heavy water plant. Narora Atomic Power Station (NAPS) located in Uttar Pradesh, India has a heavy water plant.
Option 3, Kakrapar, also has a heavy water plant. Kakrapar Atomic Power Station (KAPS) located in Gujarat, India has a heavy water plant.
Option 4, Kota, has a heavy water plant as well. Rajasthan Atomic Power Station (RAPS) located in Kota, Rajasthan, India has a heavy water plant.
Therefore, the only option without a heavy water plant is option 2, Sriharikota. Other options mentioned in the question do have heavy water plants.