i again say to some student that i m not say that icai has not propre checking of exams but some where need to improvement ,,,after u receive ur answer sheet u may also say this.
Procedure
1- send application of rti with fill details.
2- write postal order no. in ur application .it must do.
3- send application with postal order rs. 10 to icai address.(given in application)
4-wait for success.