dear shumaila if you are sure about 50% correct answers, then be relaxe, you are surely to be short listed for interview, for interview preparation you must be well awared of general knowledge specially realted with islamiat, pakistan studies(specially sound knowledge of our sindh provence) and of your native city/district. some form g.k as well. where as must cover the areas of accounting, audintng and management as well. and specially in which you are speciallized i-e marketing, finance etc.