The Budget session of Parliament has been extended by a day till February 10 to dispose of "important government business"
The white paper is aimed at highlighting the alleged economic mismanagement under the United Progressive Alliance government, which was led by the Congress from 2004 to 2014.
Rao, who is also the Bharat Rashtra Samithi's floor leader in Rajya Sabha, said his party is "boycotting in protest against the failure of BJP-led NDA government at the Centre on all fronts of governance".
On the eve of the Budget session, opposition parties on Monday raised the Adani issue and the conduct of governors in some states ruled by them at an all-party meeting.
CPI (M) said a high-level inquiry monitored by the Supreme Court on a day-to-day basis is essential on the allegations levelled by Hindenburg Research against the Adani group.
It will be the 259th session of Rajya Sabha and 11th session of the 17th Lok Sabha.
As soon as the House met for the day, Lok Sabha Speaker Om Birla made the valedictory reference, summing up the proceedings of the session.
On February 1, the Union Budget will be presented in the Lok Sabha before being tabled in the Rajya Sabha.
Prime Minister Modi is now leading the government from the front and has directed all his MPs to aggressively defend the Bill and not be affected by the oppositions' charges.