Properties of Matter – Online MCQs Test – Physics 9th

1. In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process?

2. If a gas is heated in a sealed cylinder, then______________ increases

3. It is responsible for the different states of matter as well as for the physical properties.

4. The molecules of which state of matter have extremely lowest energies?

5. The molecules of the following state of matter are usually arranged in a regular pattern called lattice:

6. It is determined by the average translational kinetic energy of molecules of a gas.

7. A gas molecule moves in a straight line. It changes its direction only when

8. In 1827, the evidence of molecular motion first discovered by:

9. A solid can ______________

10. A gas in a container of fixed volume is heated. What happens to the molecules of the gas?

11. During which process a gas becomes a liquid____________

12. In which state of matter, molecules are found in clusters?

13. An object with particles close together and vibrating describes a ______________

14. According to kinetic molecular theory, the pressure exerted by a gas is caused by the _______

15. A group of atoms is called:

16. If a gas is compressed to half of its original volume, its pressure will be:

17. What happens to the molecules of a gas when the gas changes into a liquid?

18. It is the only metal that is not solid at room temperature.

19. If we decrease the pressure of a gas, the volume of the will be:

20. Which state of matter has low density?