Kumar, who was elected to the Upper House last week, swore in the name of God when he took oath in Hindi.
Chairman Hamid Ansari congratulated Kumar on taking the oath.
Kumar along with Pradeep Balmuchu (Cong) were elected to Rajya Sabha from Jharkhand last week. Balmuchu took oath yesterday.
New Delhi: Jharkhand Mukti Morcha leader Sanjeev Kumar today took oath as member of the Rajya Sabha.
First Published: Wednesday, May 09, 2012, 12:33