Answer:
'The Second Oldest Reactor in India is Rajasthan Atomic Power Station, located in Rawatbhata, Rajasthan'. It was established in 1968 and is modeled on the Canadian Chalk River National Research X-perimental NRX reactor. It is also 'India's First Pressurized Water Reactor (PHWR) of the type - CANDU (Canada Deuterium Uranium) type'.
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