I am very happy to tell you guys that I have successfully passed my OCPJP with 88%.
I really want to thank you all for the helpful tips and quick responses to all my questions.
A very special thanks to @Devaka for creating a wonderful test simulator
. ExamLab is a must for everybody preparing for the exam.
Thank you Wouter Oet and Pedro Kowalski for answering my questions.
Coming to the exam.
I got around 4 questions on synchronization(code testing), wait/notify(true/false questions).
None about serialization.
Collections/generics was very well covered(so spend more time on it).
Apart from this it was a fairly easy test.
Finally, I want to know what is the next step(certification) for me? any suggestions are hugely appreciated.