Here,i have got some answer  for 2 of the questions:
2 JSP : forward  tag does't forward the request  object to the
forwarded page?(true/false)
ans:it will forward the request object  to the forwarded page
>
> 3 If the bean  is declared with the request scope  then it is
> accessible even within the re-directed page?(true/false)
yes it is accessible