Does anyone has any answer to my query
As pdf format can view in apex page! You can try same step to view Word ? Am not sure its showing or not.but we can apload as word format in item source(RTF format)
I don't think there are browser plugins to show a Word document in the browser (like you can do with PDF). So yes, you will get a download dialogue when fetching a Word doc.
IE might be able to display MS Office documents without a plugin.
I think OpenOffice has plugins for FireFox that can do that for you.
Beware of the pages you find. Some have advertisements that look like a 'download now' button.