Haryana

You can opt for MBA General / IB as per your career inclinations. Also, MBA in HR will be a good options for you as well.
Gradation in Hindi does not effect your MBA specialization as this is a professional course, purely depend your instinct and your interest rather than your earlier qualification.

There is no official cutoff since admission in Great lakes is profile based. But the trend is around 85-90 percentile for CAT.
Best of luck!

You have a decent percentile. NPTI is a good institute but it won't boost your profile. NPTI students have got 100% placements but their average package is 5.5 lakhs. It would be better to do energy management from a good business school.

Hardly any difference, both are great brands. Although average salary for Chennai campus is more.
For Gurgaon check below:
Post Graduate program in Management 2016
Average salary offer-: Rs 10.77 lakhs per annum,Median salary offer-: Rs 10.50 lakhs per annum and Highest salary offer-: Rs 15.5 lakhs per annum.
Post Graduate Diploma in Management
Average salary offer - Rs 8.86 lakhs per annum and Highest salary offer-Rs 14,00,000/-

Yes, PGDM is offered.
Post Graduate program in Management 2016
Average salary offer-: Rs 10.77 lakhs per annum,Median salary offer-: Rs 10.50 lakhs per annum and Highest salary offer-: Rs 15.5 lakhs per annum
Post Graduate Diploma in Management
Average salary offer - Rs 8.86 lakhs per annum and Highest salary offer-Rs 14,00,000/-

95+ percentile along with a decent profile will fetch you a call.

Manohar Memorial College is the best option as they offer Diploma course, which can be done after completing class 10th.