Dear Reader,

Yes, You are eligible for JNU entrance exam for MSc chemistry if you are graduate with CBZ as this CBZ contains chemistry,botany and zoology as it's main subject and eligibility of Msc chemistry for JNU entrance exam is minimum aggregate of 55% with chemistry as main subject and also 10+2+3 with minimum aggregate of 55%.You can also refer to the below link for more reference-

https://www.careers360.com/university/jawaharlal-nehru-university-new-delhi/msc-chemistry-course

Have a good day and great future ahead....