Correct Answer - B
`I.Q=([NO_(2)]^(2))/([N_(2)O_(4)])`
Since, `[NO_(2)]` is minimum and `[N_(2)O_(4)]` is maximum at point A, hence Q is minimum at this point. Thus, false
`II.Q=((0.1)^(2))/((0.1))=0.1ltK_(c)`
Thus, reaction proceeds left to right. Thus, true.
III. `K_(c)=Q` when equilibrium is reached is reached at point D or F. Thus, true.