A grateful nation remembered late freedom fighter Lala Lajpat Rai on his 146th birth anniversary on Friday.Leader of the Lok Sabha and Finance Minister Pranab Mukherjee and Minority Affairs Minister Salman Khurseed led the parliamentarians in paying floral tributes at the portrait of Rai in the Central Hall of Parliament House.The Secretaries-General of Lok Sabha and Rajya Sabha, T K Viswanathan, and V K Agnihotri, respectively, also offered floral tributes.