Hello Charan

Reservation system in India started during britush rule.

There are minority categories like schedule caste , schedule tribe, Economically backward class etc

Depending upon class reservation quota is given .

OC means other caste or general category.

It comes under UR or unreserved category.

Reservation quota state wise

State    sc     OBC

Kerala  8       40

Madhya pradesh - sc  16 , obc 14

Magarshtra sc - 13 , obc - 32