Question

which stream is benefitial for applying in civil services exam(IAS) science or commerce and in which field one must be strong for applying for CSE exam

Answer 1

If you want to become an IAS officer, you need to have thorough knowledge of more than two subjects. You should be strong in your primary subjects, and it does matter whether you take commerce or science or engineering. You must also keep a watch on the current events, and burning issues such as climate change, global warming, global economy, political happening in Iraq, etc.