Which of the following statements are true and which are false? In each case give a valid reason for saying so, `r :` Circle is a particular case of an ellipse `s :` If` x` and ` y` are integers such that `x > y` , then=`-x<-y `, `t` : `sqrt(11)` is a rational number.

Which of the following statements is true is case of alkyl halides ?

Which of the following statements are true and which have are false? In each case give a valid reason for saying so p : Each radius of as circle is a chord of the circle q : The centre of a circle bisects each chord of the circle.

Which of the following statements are true and whihc 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: circles is a particular case of an ellipse. (iv) s : if x and y are integeres such that xgty , then -xlt-y . (v) t: sqrt(11) is a rational number.

In each of the following figures, ABCD is a parallelogram In each case, given above, find the values of x and y

In each of the following figures, ABCD is a parallelogram In each case, given above, find the values of x and y

In which of the following cases is the value of x maximum.

Which of the following Roman numerals are not valid? State the reason for your answer in each case. LM

Which of the following Roman numerals are not valid? State the reason for your answer in each case. XXVI

Which of the following Roman numerals are not valid? State the reason for your answer in each case. XVVI