Yes, you can apply for provisional registration and ensure you furnish an attested copy of youe class XII passing certificate to ICAI on clearing your class 12 exams. For complete details check 

https://finance.careers360.com/articles/ca-cpt

Please do note: CA CPT exam will NOT be conducted after June 2019 session. CA CPT 2019 June session will be the last session of CPT exam. It has been decided in lieu of the introduction of new CA entry level exam, i.e. CA Foundation 2018, under revised scheme.After June 2019, CA Foundation will become the sole CA entry-level qualification examination. Until this period, both CA CPT and CA Foundation Examinations will be conducted by ICAI.

Check http://icaiexam.icai.org/helppop.php?ec=p&in=cpt_guide for complete details