MBA/PGDM

You should apply for CAT and get a good percentile and then select a good college for MBA.

Diploma from polytechnic in any field is not equivalent to a graduation degree. The eligibility criteria to seek admission in MBA is graduation degree in any discipline. You are not eligible to seek admission in MBA. You are advised to pursue degree of your choice to become eligible for seeking admission in MBA.

You can expect average package of Rs 5 lakhs per annum and if you have work experience then it can go upto Rs 9-10 lakhs per annum. Not everyone gets such high package. Total intake for PGDM is 120 students.

I don't remember exact number but you can always check it on below link:
http://dtemaharashtra.gov.in/mba2016/StaticPages/HomePage.aspx

No chance.I would suggest you to take CET once again.

The fee is Rs 6 lakhs for the entire course.

You can prefer IGNOU or Pondicherry University or if you are capable of going with NMIMS or Symbiosis then you can prefer the same.

If you want to pursue MBA then do it from any college which has good faculty. The course fee is almost 82k per year in MIT whereas you will get other ordinary colleges in and around 15k in Mumbai. Yes, it is cheaper as compared to Symbiosis. Symbiosis charges around 250000 per year. BBA is absolutely not necessary for MBA.

Amrut Mody School of Management received 4.92 LPA as the highest salary last year and the average salary was 3.65 LPA. Companies are coming in good number. Amrut Mody is better in comparison to CK Shah.

Dear Vaibhav,
NET examination would be conducted by University Grants Commission, New Delhi, which expects a full Master's degree in various disciplines, with post graduate Diplomas you cannot take the entrance examination for lectureship or for research fellowship. BUT there is other chance for you, IIMs offer FPM, Fellow Programme in Management equivalent to PhD. With PG diploma you can do FPM programme.