### Which of the following statements are true and which are false? In each case give a valid reason for saying so

(i) p : Each radius of a circle is a chord of the circle

(ii) q : The centre of a circle bisects each chord of the circle

(iii) r : Circle is a particular case of an ellipse

(iv) s : If x and y are integers such that $x>y$ then $−x<−y$

(v) t : $11 $ is a rational number