Delete the project named Servers (or Servers1, Servers2 which contains your server.xml), find it in Package Explorer(workspace)
Remove server from Eclipse :
Go to Window > Preferences > Server > Runtime Environment, here remove the server your are using from eclipse and add it again(doing this will create a new Server project folder in Eclipse) ,
Remove server from Project :
Also remove the server in your project(Build path > configuration path > Java Build path) and add again.
now you got a fresh Server project which will not have Multiple Context on its server.xml, only deleting duplicate path in server.xml solved the exixting issue but still server dint start, by doing this Server started(Apache Tomcat v7) and worked normal
And i dont know whether this is good practice or not, i am a starter in programming.