Hi jaswinder,
I went along with my husband and we were interviewed separately for about 15 to 20 mins each. VO asked about our wedding dates, who attended the wedding, how did we fall in love (our marriage is love marriage), also asked if we reject your file what will you do?(standard question you;ll be asked for sure) so study that question properly.....did my spouse marry me to go to canada, has my spouse applied for canada before, my friends visited me in india from canada VO asked my husband if he met my friends (if yes when and where)
they asked me for my ids, and when i became a citizen of canada, asked me if i get along with my inlaws, are my inlaws happy that their son is going to canada?, why did i marry my spouse? asked me if i know he applied to go to canada before or not? asked me if i reject your life can you stay in india? who attended the wedding...
we had lots and lots proofs with us like, recents photos, bills - shopping bills, travelling bills, gurdwara receipts..lotta photographs taken with my friends who visited india after our marriage...but the VO didnt ask for anything...we also have each others name tattooed on our body (that could be plus point)
just be confident and respectful...remember this is VOs job to ask you silly questions and make you nervous..just have a proper breakfast and have proper sleep and be confident and genuine and you will be fine.
i hope this helped!