can i do mba after 1 year dim (diploma in management)

Hi, In order to pursue MBA you need to be graduate (10+2+3) in any field with atleast 50% marks in graduation, plus you need to take various management entrance test like CAT, MAT, XAT, SNAP, etc. All the Best.

For MBA minimum qulification is passing degree .

No you don't because eligibility criteria for MBA is B.com or B.E so do B.E then go for MBA......GOOD LUCK.