No, travelers don't need to carry a Certificate of Renunciation of Indian Citizenship during their travel to India.
There are two types of visas for visiting India: paper and electronic. Paper visas are intended for longer visits. It's the finest option for anyone who has fallen in love with India and wants to work or study there. If you are one of them, you can only obtain a paper visa from the Indian embassy in your country.
There are five types of India Electronic Visas available for people wishing to visit the country for the first, second, or even fifth time. India is a nation that should be visited again and again.
The Indian electronic visas are:
Tourist eVisa (double entry/30 days)
Tourist eVisa (multiple entry/ 1 year)
Tourist eVisa (multiple entry/ 5 years)
Business eVisa (multiple entry)
Medical eVisa (triple entry).