Hello Student

If you are talking about polytechnic examination that is jexpo which  total marks is 100. The  Subjects of jecpo examination is mathematics 40+chemistry-20+physics -20+English 10+aptitude test -10 ,=100.Out of 100 the minimum marks is 40. ToQualify the jexpo examination 40 is the minimum marks to qualify .. on the basis of qualifying marks and  marks obtained in 12th class examination the admission is done on the merit basis primarily.

Hope this will help.