@Anjaneai Setting the Pass requirement to 100% will not force the user to answer a question correctl before moving on to the next. I don't know if changing Required to 'User must answer each question' could help, because I'm reluctant to use that option, it causes sometimes lot of problems.
@Krush if you have time, have a look at my blog posts about functionality of question slides:
http://blog.lilybiri.com/question-question-slides-in-captivate
http://blog.lilybiri.com/question-question-slides-part-2
Lilybiri