Question

To which physical state of matter do they apply 1. incompressible no fixed shape and 2 . compressible no definite shape

Answer 1

1 BEC, liquid
2 plasma,gas

Answer 2

A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a constant volume independent of pressure. As such, it is one of the four fundamental states of matter, and is the only state with a definite volume but no fixed shape.