@rahulkrjain you are correct, there is no trading account for minor. One has to transfer the shares to parents ac only than he / she can sell.
Yesterday i have given DIS certificate (For Minor ac, to trf shares) to Kotak Sec, and today i got NSDL mail for confirmation. So, by today evening i will get in my personal ac, and from tomorrow i can sell.
Please Note :
10 mainboard shares alloted to my minor son ac (i Apply only MAINBOARD / Retail Category), in last 2 years. Yesterday only i have given the instruction to trf.