Which one of the following is not periodic ?

Which one of the following is not a periodic motion?

Which one of the following is not a periodic function? f(x)=log(sin x)

Which one of the following is not a periodic property i.e. does not show any trend on moving from one side to the other in the periodic table ?

Which one of the following is periodic ?

Which one of the following is the period of Eleventh Five Year plan ?

Which one of the following is the period for the Legislative Council to detain the ordinary bills ?

Which one of the following is a periodic motion but not oscillatory ? (i) Motion of pendulum of a wall clock. (ii) Oscillation of a mass suspended from a spring. (iii) Motion of a planet around the sun. (iv) Vibrations of the wire of a guitar.

Which of the following is not a periodic function with period 2pi ?