Dear Anwarkhan, you directly contact them through contact number that they provide in its website for your convenient I am pasting that number here 080 22238888 and email address is owcenquiry@bwssb.org
or you can see some general frequently asked question by students at http://owc.bwssb.gov.in/member/faq
All the best dear I hope this information full fill your need.
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