[" Dominance of strong repulsive forces among "],[" the molecules of the gas "(Z=" compressibility "],[" factor) "],[" (a) depends on "Z" and indicated by "Z=1],[" (b) depends on "Z" and indicated by "Z>1],[" (c) depends on Z and indicated by "Z<1],[" (d) is independent of Z "]

z' indicates

The compressibility factor Z for the gas is given by

The compressibility factor Z for the gas is given by -

The compressibility factor Z for an ideal gas will be .........

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I: Compressibility factor (Z) of CH_4 and CO_2 are less than unity. Statement - II : Z< 1, indicates predominance of attraction force among gas molecules.

If sin x+sin y+sin z=0=cos x+cos y+cos z then the expression, cos(theta-x)+cos(theta-y)+cos(theta-z), for theta in R is A) independent of theta but dependent on x,y,z B) dependent on theta but independent of x,y,z C) dependent on x,y,z and theta D) independent of x,y,z and theta