Question

30. The physical state of matter can be changed by changing the temperature and pressure.

• A. True
• B. False

Answer 1

The correct option is A True

• The physical state of matter can be changed by changing the temperature and pressure.
• Matter are classified into three state: solid, liquid, and gas.
• By increasing the temperature, solid changes to liquid state, and further increasing the temperature changes liquid sate to gas sate.
• Similarly, by increasing the pressure gas can be converted to a liquid state or a liquid state can be converted to solid state.

Hence, the given statement is True.