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best magazine for ias preparation The Bhabha Atomic Research Centre has recommissioned an upgraded version of .'Apsara', the country's oldest research reactor that was decommissioned almost a decade ago. Apsara was first made operational On August 4, 1956, pratiyogita darpan pdf becoming Asia's first research reactor at the time. However, after having been in service for over five decades, the reactor was shut down in 2009 and decommissioned. The upgraded version, like its ancestor, is indigenously made. It uses plate type dispersion fuel elements made of Low Enriched Uranium (LEU) pratiyogita darpan in hindi

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