how many times can I appear for scra exam

Hi surjeet, 

As per UPSC eligibility criteria for SCRA examination there is no maximum number of attempts for SCRA Examination.
·         A general candidate can apply for SCRA as long as his/her age is in between 17 to 21 years as on 1st January of the year of Examination.
·         But for SC/ST candidates they can apply up to 26 years of their age and OBC can apply up to 24 years of their age.
Other Qualification require for SCRA is given below:
·         Must have to pass Class XII or equivalent examination from recognized board.
·         Must study Mathematics and any one of Physics or Chemistry subject in 10+2.
·         Must pass Class XII examination with First or Second Division.
·         Candidate who have done B.Sc in either Physics or Mathematics are also eligible for SCRA.
·         Citizen of India or subject of Nepal or Bhutan are eligible to appear for SCRA Exam.