The correct answer is 7.As of December 2021, the total number of nuclear power plants in India is 7.Following coal, gas, hydroelectricity, and wind power, nuclear power is India's fifth-largest source of electricity.India also stands at 7th position in terms of the number of nuclear reactors in the world, with over 23 nuclear reactors in 7 power plants as of December 2021, which produces 6780 MW of nuclear power. Additional InformationNuclear PlantsLocationKakrapar Atomic Power Station ‚¬œ 1993Gujarat(Kalpakkam) Madras Atomic Power Station ‚¬œ 1984Tamil NaduNarora Atomic Power Station- 1991Uttar PradeshKaiga Nuclear Power Plant -2000KarnatakaRajasthan Atomic Power Station ‚¬œ 1973RajasthanTarapur Atomic Power Station ‚¬œ 1969MaharashtraKudankulam Nuclear Power Plant ‚¬œ 2013Tamil Nadu