Explanation:

• Scheduled Castes Federation (SCF) was an organisation in India founded by B. R. Ambedkar in 1942 to campaign for the rights of the Dalit community.
• Bahishkrit Hitakarini Sabha is a central institution formed by Dr. Babasaheb Ambedkar for removing difficulties of the untouchables and placing their grievances before government.
• BR Ambedkar was conferred Bharat Ratna posthumously on March 31, 1990.
• In 1956, Ambedkar converted to Buddhism. He completed the final manuscript of his book on Buddhism ‘The Buddha and His Dhamma’ in December 1956. Three days later, on 6 December, he passed away.

Hence both statements are correct.