Question

1.The state of matter with only one free surface is a]liquid b]gas c]solid d]plasma

Answer 1

The answer is liquud

Answer 2

State of matter only one free surface is liquid.  

Explanation:

A liquid, which is a state of matter, has a specific volume but it has no specific shape as it occupy the shape of the container. Gases may change to liquid when they cool down like water vapour.

Solid may melt to liquid after heating. There are some specific properties of the liquid i.e viscocity, surface tension, vapour pressure and boiling point.