Questions Number 1 to 8 carry 1 mark each. For each question Four alternate choices have been provided of which only one is correct. Choose the correct one.
1. Any point on the line y=x is of the form :
(a) (a, a)
(b) (0, a)
(c) (a, 0)
(d) (a, -a)
2. Three angles of a quadrilateral are 75°, 90° and 75°. The fourth angle is :
(a) 95°
(b) 90°
(c) 105°
(d) 120°
3. The equation of x-axis is of the form :
(a) x = 0
(b) y = 0
(c) x = y
(d) x + y = 0
4. A quadrilateral having only one pair of opposite sides parallel is called a :
(a) square
(b) parallelogram
(c) rectangle
(d) trapezium
5. If each side of a cube is doubled, the total surface area becomes :
(a) 2 times
(b) 12 times
(c) 4 times
(d) 6 times
6. In fig, O is the centre for the circle. If reflex a ∟AOC=230º then x is equal to :
(a) 65°
(b) 50°
(c) 130°
(d) 115°
7. Which of the following can not be the empirical probability of an event?
(a) 2/3
(b) 1
(c) 3/2
(d) 0
8. The median of a triangle divides it into two :
(a) triangles of equal area
(b) congruent triangles
(c) right triangles
(d) Isosceles triangles