1. The critical volumes of four gases A, B, C, D are respectively 0.025 L, 0.312 L, 0.245 L, 0.432 L, the gas with highest value of van der Wall constant b is

2. An ideal gas is one which obeys the gas laws under

3. The states of matter having no definite shape but definite volume:

4. The theory which explains that gases consist of molecules, which are in rapid option is known as:

5. A gas deviates from ideal behavior at a high pressure because its molecules:

6. If 20cm³ gas at 1 atm. is expanded to 50 cm³ at constant T, then what is the final pressure

7. The value of universal gas constant R depends on

8. The volume of 2.8 g of carbon monoxide at 27°C and 0.0821 atm is

9. A person living in Shimla observed that cooking food without using pressure cooker takes more time. The reason for this observation is that at high altitude:

10. Dipole-dipole forces act between the molecules possessing permanent dipole. Ends of dipoles possess ‘partial charges’. The partial charge is

11. Which of the following property of water can be used to explain the spherical the shape of rain droplets?

12. The rates of diffusion of gases are inversely proportional to the square root of their densities. This statement refers to :

13. If helium and methane are allowed to diffuse out of the container under the similar conditions of temperature and pressure, then the ratio of rate of diffusion of helium to methane is:

14. Falling drop of water is spherical due to:

15. When you heat a sample of gas, what happens to the particles that make up the gas?

16. The rise or fall of a liquid within a tube of small bore is called:

17. The total pressure of a mixture of two gases is :

18. The rate of diffusion of methane is twice that of X. The molecular mass of X is

19. The law, which states that at constant temperature, the volume of a given mass of gas is inversely proportional is pressure, is known as:

20. As the temperature increases, the average kinetic energy of molecules increases. What would be the effect of the increase of temperature on pressure provided the volume is constant?