After the funds hit your bank account, NBFC has no further trail as to how you utilize the funds. However, as per compliance, you have to state the purpose against which you are borrowing the funds. We have made provisions to collect this information from the borrower in the workflow.
On a side note (purely from personal experience), it may not be a great idea to trade intraday with borrowed funds. I’d advice you against it.
At present, the interest rate is 10.5% per year or 0.028% or 2.8 Paisa per day for every Rs.100 borrowed.