Indian Economy- Ramesh Singh or any other standard book+Budget 2021+Economic Survey

Punjab Economy- Mainly refer to Punjab Budget

Taxation Rules and regulation applicable to industries: https://www.incometaxindia.gov.in/pages/acts/industries-act.aspx

GST: Either refer to bcom. level GST book or online sources

Government Industrial Development Policies & Schemes: Refer to dpiit.gov.in + https://msme.gov.in/all-schemes + pib articles on this topic only

Industrial Development Rules & Regulations: https://www.indiacode.nic.in/handle/123456789/2118 view_type=browse&sam_handle=123456789/1362

Industrial Laws and Acts: Factories Act, Industrial Disputes Act, Trade Unions Act, Employee State Insurance Act, Workmen Compensation Act.(Either grab a bcom level book or directly download pdf of respective acts from web)

Last but not the least, you don’t have to cram every act. Just figure out the important things that you feel relevant from the exam point of view and read them. Revision is the key thing that you need to focus upon.