.htaccess: Options not allowed here
As your running the drupal from sub directory so modify the line containing "RewriteBase" (may be line no. 102) of .htaccess, change "# RewriteBase /drupal" to "RewriteBase /drupal_test".

And if the above thing doesn't works for you than please try the following:
Search for "&lt;directory /var/www/&gt;" in the "/etc/apache2/sites-available/default" file and change it as below:

&lt;Directory /var/www/&gt;
    Options Indexes FollowSymLinks MultiViews
    AllowOverride All
    Order allow,deny
    allow from all
&lt;/Directory&gt;