Sir i alerdy taken bsc(p. c. m). Is it help for upsc exam particularly IAS and KAS exam.
Yes, you can apply for IAS examination.
You are eligible for UPSC exam even after pursuing graduation from any degree, graduation is the minimum requirement to sit for UPSC exam. However it is said that arts is the best stream for preparing UPSC but it isn't true anymore. Aspirants from science stream can do very well in civil services exam as well. You just need to divide your syllabus and prepare accordingly.
Also science can really help you in general knowledge questions consisting of basic chemistry and physics. Maths can also sharp your reasoning question answer skills. Choose subjects according to your stream for UPSC mains exam.
Hope you find it helpful. Thankyou!