Hi @hrishi,
I’m not sure of the exact reason for why you can’t see assigned key frames – but you might want to checkout out this video.
https://cgcookie.com/lesson/keyframes-and-channels
or the video before that one (called Timeline)
Without knowing the exact issue you’re having, I’m going to guess and say there’s something in those videos that will solve your problem.
(It might be as simple as your object is not selected?)
If you are still stuck. – post a screen shot or the file.
Hope that helps.
