A. all the three have fixed volume
B. their molecule have the same size
C. their molecules are always in motion
D. all the three have the same inter-molecular forces

Correct Answer: Option B

B. their molecule have the same size

SEE ALSO  An electron of mass 9.1x 10^31 kg is travelling at a speed of 2.0 x 10^6ms¯¹. Calculate the associate wavelength of the electron. [h = 6.6. x 10^34 Js]

Copyright warnings! Do not copy.