Is RGIPT BTech admission entrance-based or merit-based?

You will not be eligible for admission as preparatory ranks are not considered under round 1. Since you have already qualified to appear for JEE (Advanced), all you need to do is meet the second criterion and apply for round 2, which will be only conducted if seats from round 1 remain vacant.

For SC/ST/PwD, the total tuition fee is INR 1.26 lac. The tuition fee in this case is INR 75,000. Rest of the fee is the same as general category candidates. 

Yes, you can still get admission in Round 2 if you meet eligibility criteria to appear in JEE (Advanced) and have a valid JEE (Mains) rank. Also, you must have scored 60% or above in class 12th. For SC/ST/PwD category students, 55% or above is required.

Yes, RGIPT allows refunds only after receiving a valid withdrawal request submitted within the deadline. Refunds for seat blocking amount and event full fees can be refunded after certain deductions. After physical registration, you will only get back the security deposit after deducting the mess advance charges based on actual consumption.

Application fee for RGIPT B.Tech is INR 600 + INR 108 (taxes) for SC/ST/PwD and female candidates. For all other candidates, the application fee is INR 1200 + INR 216 (taxes). This fee is non-refundable.