Governor V P Singh Badnore administered the oath to Rana at the Raj Bhawan here, an official spokesman said.
After joining office at the Vidhan Sabha, Rana said he was reviewing the arrangements for the forthcoming Vidhan Sabha session starting from March 24.
He said the MLAs would be administered oath in the Vidhan Sabha on March 27.
Rana is a law graduate from Dehradun University. He was practising at Rupnagar district courts before joining politics.
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