Greetings,

Usually the castes that come under the reserved category (as per the Indian constitution) do not lose their reservation categories even after conversion to Christianity (unless the convert has decided to forfeit his/her right over it).

You need to be in possession of a caste certificate issued by government authorities that legitimates your reserved category and makes you eligible for applying in different exams or services under the reserved quotas.

good day!

Hello aspirant!
Hope you are doing well!

You will be able to avail the benefits of SC category only if you are currently of this category. Kindly check in your official form what category you belong to, irrespective of your religion. That category benefit you will be able to avail.
Hope this helps!