Please find the links to the official notification below, I have also attached one of the pdf files and the source where such notifications can be found.
https://www.mca.gov.in/Ministry/pdf/ExemptionGovernmentCompanies_14062017.pdf
https://www.mca.gov.in/Ministry/pdf/ExemptionSection8Companies_14062017.pdf
https://www.mca.gov.in/Ministry/pdf/ExemptionPrivateCompanies.pdf
Source: https://www.corporateprofessionals.com/exemptions-to-section-8-company/-private-company/-government-company
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