I went through the link deploy war file on Tomcat and run without project name and I found that the question being asked is exactly the same that I'm having.
But the answers confused me a bit. So first of all I want to know whether this can be achieved by not modifying the Tomcat installation directory at all ! If yes then please suggest me a concrete way to achieve my objective.
Also, my environment settings is like I'm building war with the help of maven. And, the server path(i.e. catalina.base) and deploy path is set as my workspace in eclipse IDE, in the server view.