Currently, I'm Applied for MBA and then I have planned to write for SSC CGL. Can i write those exams in the middle of my exams or simply study after my MBA graduation? Which is better

Hello,

It's entirely up to you whether you want to appear for any compeitive exam such as SSC CGL during your post graduation studies, there are many successful candidates who have qualified various exams such as SBI PO, SSC CGL, UPSC CSE to name a few while working or still in the final year of graduation, so it depends how effectively you can balance both your studies and preparation for these exams, if job is not priority for you at the moment, then focus completely on your studies,do well in it, placement must be an important criteria when you're planning to pursue MBA, so work towards that also, and in case you don't like your job profile you can always switch later on,
however if job is priority  then you have to balance out both the things well, an effective schedule is important regarding this, you need to go through the syllabus, exam pattern, choose appropriate study materials and keep it minimal, go through previous year papers, and mock tests on a regular basis to analyze your preparation level, also remember one important thing especially in context of  SSC CGL the exam is conducted at four levels, and the recruitment process happens over a long period of time, it's not something that you appear in the exam, and within two months you qualify and join, recruitment process of majority of government exams tends to take time, so consider all these things prior to taking any decision.