RewriteEngine on

RewriteOptions inherit
RewriteCond %{HTTP_HOST} ^wrd\.mbits\.ac\.in$ [OR]
RewriteCond %{HTTP_HOST} ^www\.wrd\.mbits\.ac\.in$
RewriteRule ^/?$ "https\:\/\/sites\.google\.com\/mbits\.ac\.in\/wrd\/pollution\-abatement\-of\-rivers\?authuser\=1" [R=301,L]