SSC means Staff Selection Commission recruiting for Central Government. While applying you need to intimate details of your earlier employment and why you were terminated. It's for SSC to decide whether they are going to accept you as a candidate. If you do not mention the previous job details, it's suppression of facts.
I have come across such case in the past. An anonimus complaint was received in the office regarding an existing employee. An enquiry was set up and case was investigated and the employee was terminated under clause ' SERVICE NO LONGER REQUIRED'. it all depends upon luck.