Question 1 :
The tangent to a circle is a special case of the secant is 
Question 3 :
A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute If the diameter of the wheel is 60 cm then the speed per hour with which the boy is cycling is
Question 4 :
Coordinates of the centre of the circle which bisects the circumferences of the circles $x^{2}+y^{2}=1:\x^{2}+y^{2}+2x-3=0$ and $x^{2}+y^{2}+2y-3=0$ is
Question 5 :
Write true or false :<br/>A chord of a circle, which is twice as long as its radius, is a diameter of the circle.
Question 6 :
$BD$ is a chord parallel to the diameter $AC$ of a circle. A point $B$ is on the perimeter of the circle such that angle $CBE={ 63 }^{ o }$. The angle $DCE$ is equal to
Question 7 :
If the area of the circle $x^2 + y^2 + 4x + 2y + k = 0$ is $5\pi $ square $cms$ then $k =$
Question 8 :
$AB$ is a chord of the circle with center $O$ and radius $r$, $OD\pm AB$ meeting $AB$ at $ D$. If $AB =8$ cm and $OD =3$ cm, then $r$ equals
Question 11 :
In a circle with centre O, $OD\bot$chord AB. If BC is the diameter, then
Question 12 :
Find the radius of a circle whose diameter has endpoints (-3, -2) and (7, 8)
Question 13 :
The area of a circle is doubled when its radius $r$ is increased by $n$. Then $r$ equals:
Question 14 :
Two chords of lengths 16 cm and 17 cm are drawn perpendicular to each other in circle of radius 10 cm. The distance of their point of intersection from the centre is approximately
Question 15 :
The radius of the circle of least size that passes through $(-2, 1)$ and touches both axes is?
Question 17 :
Line segment joining the centre to any point on the circle is 
Question 18 :
If the diameter of a circle decreases to its $\dfrac{1}{4}$ then its radius decreases to
Question 20 :
If a diameter is drawn it divides the circle into____equal parts
Question 21 :
What is the radius of the circle with the given diameter $42$ cm?
Question 22 :
If a chord of length $2\sqrt { 2 }$ subtends a right angle at the centre of the circle, then its radius is
Question 23 :
The length of the diameter of a circle is how many times the radius of the circle 
Question 25 :
The area of the circle centred at $(1,2)$ and passing through $(4,6)$ is
Question 26 :
Consider the following statements and identify which are correct:<br>i) A secant to a circle can act as a chord.<br>ii) A chord cannot be a secant to the circle.<br>
Question 27 :
Draw a circle and any two of its diameters. If you join the ends of these diameters, and if the diameters are perpendicular to each other the figure formed is a Rhombus
Question 28 :
What is the center of the circle having the equation$\displaystyle x^{2}+y^{2}-2x-4y=20$?
Question 30 :
What are the coordinates of the center of the circle represented by the equation$\displaystyle \left ( x+3 \right )^{2}+\left ( y-4 \right )^{2}=25$?
Question 31 :
Centre of the circle $x^2 + y^2 - 2x + 4y + 1 = 0$ is-
Question 33 :
If $\bar { PQ } $ is the diameter of a circle whose center is $R$. If the coordinates of $P$ are $(4,8)$ and $(8,4)$, what are the coordinates of $R$?
Question 34 :
What is the radius of a circular field whose area is equal to the sum of the areas of three smaller circular fields of radii $12m, 9m$ and $8m$ respectively?
Question 36 :
In a circle of radius $10$ cm, a chord is drawn $6$ cm from the centre. If a chord half the length of the original chord were drawn, its distance in centimeters from the centre would be<br>
Question 38 :
A circle has two equal chords AB and AC. Chord AD cuts BC in E. If $AC=12\:cm$ and $AE=8\:cm$,then AD is equal to
Question 39 :
A chord of a circle, which is twice as long as its radius, is a diameter of the circle.
Question 40 :
The number of revolutions made by a bicycle wheel 56 cm in diameter in covering a distance of 1.1 km is
Question 41 :
What is the center of a circle whose equation is (x - 1)$\displaystyle ^{2}$ + (y+3)$\displaystyle ^{2}$=25?
Question 42 :
The circumference of a circle is $100$ inches. The side of a square inscribed in this circle, expressed in inches, is:
Question 44 :
Of all the chords of a circle passing through a given point in it, the smallest is that which<br>
Question 45 :
Of all the triangles that can be drawn in a given circle, a triangle with a side of maximum length must be -<br>
Question 46 :
In a circle, if a chord $AB$ is nearer to the center $O$, then the chord $CD$ is
Question 47 :
If the line $hx + ky = 1$ touches $x^2 + y^2 = a^2$, then the locus of the point (h, k) is a circle of radius
Question 48 :
At the centre of circle, opposite sides of a quadrilateral circumscribing a subtend 
Question 49 :
The radius and length of an arc of a circle are 35 cm and 22 cm respectively The angle subtended by the arc at the centre of the circle is
Question 50 :
Find the circumference of the circles with the radius 7cm :(Take $\pi =\dfrac{22}{7}$) 
