Hello,
Eligibility criteria for bsc chemistry is
You have to qualify PUCET exam and must have passed the 12th from the recognized institute to get an admission in Punjab University. Minimum 85% cutoff required.
So it may not be possible to get an admission at PU.
There are other colleges which considers PUCET like
1. PEC, Chandigarh
2. DAV, Chandigarh
3. MCMDAV, Chandigarh
You should visit the official site of Punjab University and check for the college registered under it.
You will get the list. You will find one for yourself.
Good luck!