Yes, of course! The minimum criteria is 75% only. You can surely apply for B. Tech and B.Sc. entrance exams or you may get direct admission in some colleges. For B. Sc( hons.), you can take the entrance tests of many good colleges and universities who admit students on the basis of entrance tests only. 

You can also prepare for the JEE which is an All India Engineering entrance exam. If you score well, you can pursue B.Tech from a reputed NIT or IIT. 12th board marks are not considered now for deciding the rank of students in JEE.

You may like to drop a year for preparing for this prestigious exam if you really wish to study in a good college or there are some good  private colleges having excellent academic and placement records. You can apply for them also. 

Hope this helped! All the best and let me know if you have further queries.