@collegemotion

Please post your virtual host so we can make sure your settings are correct.

If using apache2 web server you can find it here /etc/apache2/sites-enabled
and if using nginx you can find it here /etc/nginx/sites-enabled

thanks.

First install Nano

sudo apt-get install nano

Then use this command to make a new file in the /etc/apache2/sites-available directory.

sudo nano /etc/apache2/sites-available/collegeadviser.in.conf

Then this is one of many examples on the Apache documentation which you can edit to meet you needs.

<VirtualHost *:80>
    ServerName collegeadviser.in
    ServerAlias www.collegeadviser.in
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/collegeadviser.in
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Once you've saved that using nano then type

a2ensite

From there you should see your domain in the list and then you type that domain you want to add to sites-enabled.
You will also want to restart or reload the apache2 service after you have done that step by

sudo service apache2 restart

Now you should have a working site on both www and non www