Question -
Answer -
(i) The given statement p isfalse.
According to the definition ofchord, it should intersect the circle at two distinct points.
(ii) The given statement q isfalse.
If the chord is not the diameterof the circle, then the centre will not bisect that chord.
In other words, the centre of acircle only bisects the diameter, which is the chord of the circle.
(iii) The equation of an ellipseis,
If we put a = b =1, then we obtain
x2 + y2 =1, which is an equation of a circle
Therefore, circle is a particularcase of an ellipse.
Thus, statement r istrue.
(iv) x > y
⇒ –x < –y (By a rule of inequality)
Thus, the given statement s istrue.
(v) 11 is a prime number and weknow that the square root of any prime number is an irrational number.Therefore, 
is an irrational number.
Thus, the given statement t isfalse.