1.
I have a calendar  site at URL http://kishan/A/B/default.aspx
<http://kishan/A/B/default.aspx>

Can it be used on a page  at URL http://kishan/A/C/default.aspx
<http://kishan/A/C/default.aspx>

[Reply] If both sites are in the same content database, have you tried using a
Data View Web Part? Better, have you tried converting the list  View Web Part to
a Data View Web Part using SharePoint Designer?

2.
Can I import  names directly  from outlook  in contact  list rather than adding one
at a time  ?

[Reply] Link the SharePoint contact list to Outlook and it will appear and behave
like a native Outlook contact list. Then, I think you can just copy all the
contacts from your local Outlook contact list to the linked SharePoint contact
list.