Since nobody helped me i decided to take it on myself.
First i changed the theme to default. and opened the footer.php
Here i found something like this:
“>Entries (RSS)
and “>Comments (RSS).
Since, i found these to lines i was sure that the feed is generated. So, i went to the site an clicked on the link that appeared at the bottom of the page. And there i go. i could see the feed. I copied the two lines and thought of pasting it in my theme. So i changed back to my custom theme and i was happy to see that it was working there as well. I did not need to paste these lines it just worked.
Hope this post will help people in future who find a Feed Not Found – 404 on wordpress
Thanks
Anybody knows about this ?