hey vishal, i cant say exactly the total number of handicapped seats but i can tell you the scenerio as mentioned in The Hindu two years back,

As many as 117 seats allotted for persons with disabilities remained vacant .Although 58 applications had been received, only 20 were found eligible with NEET marks. Only five candidates were allotted seats, because they satisfied the disability norms prescribed. Officials said the rest of them did not qualify under the norms set for disability.Hope this helps, good luck