I have generated CSR and received two file.
and after that I have purchased Certificate from authority and received two files.
now I have included both 2.1 and 2.2 file to apache conf ssl directory and set up all required things.
Now when I run my site it is showing following error.
AH01909: 192.168.100.81:443:0 server certificate does NOT include an ID which matches the server name