where does the treasury bills cllasifecate ?capital market or money market?

Answer 1

The KEY here is to understand that the main difference between the money and captial markets is time. Money markets are short-term, while the capital markets are long-term.

Since T-Bills are short-term instruments, they would be bought and sold on the money market.

Answer 2

Money markets are liquid. Capital markets are more for the purpose of gaining investment capital.

Look at the qualities of the T-bill and decide.