#### 9th Standard Maths English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 8

9th Standard

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Maths

Time : 00:15:00 Hrs
Total Marks : 15

Part A

15 x 1 = 15
1. If U ={x | x ∈ N, x < 10} and A = {x | x ∈ N, 2 ≤ x < 6} then (A′)′ is

(a)

{1, 6, 7, 8, 9}

(b)

{1, 2, 3, 4}

(c)

{2, 3, 4, 5}

(d)

{ }

2. If J = Set of three sided shapes, K = Set of shapes with two equal sides and L = Set of shapes with right angle, then J ∩ K ⋂ L is

(a)

Set of isoceles triangles

(b)

Set of equilateral triangles

(c)

Set of isoceles right triangles

(d)

Set of right angled triangles

3. Find the odd one out of the following

(a)

$\sqrt { 32 } \times \sqrt { 2 }$

(b)

$\frac { \sqrt { 27 } }{ \sqrt { 3 } }$

(c)

$\sqrt { 72 } \times \sqrt { 8 }$

(d)

$\frac { \sqrt { 54 } }{ \sqrt { 18 } }$

4. $\sqrt [ 4 ]{ 405 } =h\sqrt [ 4 ]{ 5 }$, then h=

(a)

5

(b)

4

(c)

2

(d)

3

5. If x3 + 6x2 + kx + 6 is exactly divisible by (x + 2), then k= ?

(a)

-6

(b)

-7

(c)

-8

(d)

11

6. (x+y)(x2−xy+y2) is equal to

(a)

(x+y)3

(b)

(x-y)3

(c)

x3 + y3

(d)

x3 - y3

7. (a-b) (a2+ab+b2)=_________

(a)

a+ b+ c- 3abc

(b)

a- b2

(c)

a+ b3

(d)

a3 - b3

8. In the quadrilateral ABCD, AB = BC and AD = DC Measure of ∠BCD is

(a)

150°

(b)

30°

(c)

105°

(d)

72°

9. PQ and RS are two equal chords of a circle with centre O such that ㄥPOQ=70°, then ㄥOR

(a)

60°

(b)

70°

(c)

55°

(d)

80°

10. Signs of the abscissa and ordinate of a point in the fourth quadrant are respectively

(a)

(+,+)

(b)

( –, –)

(c)

(–, +)

(d)

( +, –)

11. The ratio in which the x-axis divides the line segment joining the points A(a1,b1) and B(a2 ,b2 ) is

(a)

b1 : b2

(b)

−b1 : b2

(c)

a1 : a2

(d)

−a1 : a2

12. The mean of a,b,c,d and e is 28. If the mean of a, c and e is 24, then mean of b and d is

(a)

24

(b)

36

(c)

26

(d)

34

13. The value of $\frac { 2tan30° }{ 1-{ tan }^{ 2 }30° }$ is equal to

(a)

cos600

(b)

sin600

(c)

tan600

(d)

sin300

14. The volume of a cuboid is 660 cm3 and the area of the base is 33 cm2. Its height is

(a)

10 cm

(b)

12 cm

(c)

20 cm

(d)

22 cm

15. A collection of one or more outcomes of an experiment is called

(a)

Event

(b)

Outcome

(c)

Sample point

(d)

None of the above