Initially I tried with Commands in Console but did not worked so I suppose to again work with GUI options and found GUI Interface as System-> Administration-> Sound card detection -> Reload Audio Driver and All other is set as default and reboot .
After that I have done following :
1. System->Preference-> Sound : Click to active system sounds .
2. System->Preference-> VolumeControl : Change Device -> Then I selected HDA Intel(ALSA mixer)
and I heard sound in CentOS
.
Thanks !