Question

The state of matter can be changed by changing

• A. Temperature
• B. Pressure
• C. Both A and B
• D. None of these

Answer 1

The correct option is C

Both A and B

Explanation:

Matter changes from one state to another by changes in temperature and pressure.

• Solid on heating changes to liquid and liquid on further heating changes to gases.
• In the same manner, gases on compression mean applying pressure changes to liquid again.

$\mathrm{Solid}\underset{\mathrm{Increasing}\mathrm{pressure}}{\overset{\mathrm{Increasing}\mathrm{temperature}}{\rightleftharpoons }}\mathrm{Liquid}\underset{\mathrm{Increasing}\mathrm{pressure}}{\overset{\mathrm{Increasing}\mathrm{temperature}}{\rightleftharpoons }}\mathrm{Gas}$

Hence, option (C) is correct.