SSC Exam Preparation

The SSC-CGL is a competitive examination based on 4 sections: aptitude, reasoning, general awareness, and English. Among these sections, English and quantitative aptitude are of prime importance, as they are the ones which form the major chunk of the examination. So, these should be given due importance.
Further, you should work on above-mentioned subjects while preparing for the SSC exam. In your free time, you can sharpen your skills in various sections which will make you competent enough to crack the examination in the first go.
Plus, also make a habit of following current affairs and news regularly.

In some companies education gap matters but if you are pursuing MBA or PGDM from reputed institute or B-School then it will not affect your placement. Normally most of the companies accept year gaps.

I hope you are doing well. For MBA admissions, you will have to appear for competitive exams like CAT, MAT, CMAT, CET, etc. and they constitute English as its inherent part. If you believe you can work hard on your English then definitely go for MBA. Other than that SSC exam would be easier for you to crack if you have good quantitative skill and it would give opportunities to you as well.

M.Com will be a good & easy option for you. This may help you to have a good career in finance and accounting as a standby option if you could not make it to SSC.

You can join SSC coaching after B.Tech. You must try for other government engineering jobs.