The correct answer is 1 only.

•  The Hindustan Socialist Republic Association (HSRA) was established by Chandrashekhar Azad and his colleagues in 1928 at Feroz Shah Kotla, New Delhi. Hence, Statement 2 is incorrect.

• Chandrashekhar Azad was born on 23rd July 1906 in Bhavra village of Madhya Pradesh. 
• He joined the non-cooperation movement at the age of 15 and was arrested because he participated in the movement.
• When produced by the magistrate, he proudly announced his name as ‘Azad’, his father’s name as ‘Swatantrata’ and his place of dwelling as ‘Jail’.
  • It was then given the name ‘Azad’.
• He was disappointed when Gandhi withdrew the non-cooperation movement owing to the violence at Chauri Chaura.
• He joined the Hindustan Republican Association after the suspension of the non-cooperation movement. 
• He was associated with the Kakori conspiracy which was the Kakori train robbery conducted by Hindustan Republican Association in 1925.  Hence, Statement 1 is correct.
• The Hindustan Socialist Republic Association was established by Chandrashekhar Azad and his colleagues in 1928 at Feroz Shah Kotla, New Delhi. Hence, Statement 2 is incorrect.
• He was involved in the shooting of J P Saunders in 1928.
• He was involved in the 1926 attempt to blow the viceroy train and Saunder's shooting in 1928.