#### 9th Standard Maths English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Eight

9th Standard

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Maths

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

Part A

15 x 1 = 15
1. If A∪B = A∩B, then

(a)

A ≠ B

(b)

A = B

(c)

A ⊂ B

(d)

B ⊂ A

2. In a town 30% like only coffee, 20% like only tea,10% like only like,15% like only any two of them, 5% only like all the three. What is the percentage of people who like none them.

(a)

15%

(b)

20%

(c)

10%

(d)

5%

3. The number $0.\bar { 3 }$ in the form $\frac { p }{ q }$ where p and q are integers and $q\neq 0$

(a)

$\frac { 33 }{ 100 }$

(b)

$\frac { 3 }{ 10 }$

(c)

$\frac { 1 }{ 3 }$

(d)

$\frac { 3 }{ 100 }$

4. The rational number lying between $\frac { 1 }{ 5 }$ and $\frac { 1 }{ 2 }$ is___________.

(a)

$\frac { 7 }{ 20 }$

(b)

$\frac { 2 }{ 10 }$

(c)

$\frac { 2 }{ 7 }$

(d)

$\frac { 3 }{ 10 }$

5. Degree of the polynomial (y3–2)(y3 + 1) is

(a)

9

(b)

2

(c)

3

(d)

6

6. The value of the polynomial f(x) = 6x - 3x2+9 when x = -1 is _____________________

(a)

0

(b)

1

(c)

2

(d)

3

7. Orthocentre of a triangle is the point of concurrency of _______

(a)

medians

(b)

altitudes

(c)

angle bisectors

(d)

perpendicular bisectors of side

8. A chord is at a distance of 15 cm from the centre of the circle of radius 25 cm. The length of the chord is

(a)

25 cm

(b)

20 cm

(c)

40 cm

(d)

18 cm

9. If ( x+2, 4) = (5, y–2), then the coordinates (x,y) are _____

(a)

(7, 12)

(b)

(6, 3)

(c)

(3, 6)

(d)

(2, 1)

10. The point (0, -3) lies on _______________

(a)

+ ve x-axis

(b)

+ ve y-axis

(c)

- ve x-axis

(d)

- ve y-axis

11. The algebraic sum of the deviations of a set of n values from their mean is

(a)

0

(b)

n-1

(c)

n

(d)

n+1

12. Find the mean of the prime factors of 165 _____________

(a)

5

(b)

11

(c)

13

(d)

55

13. Given that sin $\alpha$ = $\frac { 1 }{ 2 }$ and cos $\beta$ = $\frac { 1 }{ 2 }$, then the value of $\alpha$ + $\beta$ is

(a)

00

(b)

900

(c)

300

(d)

600

14. If the ratio of the sides of two cubes are 2:3, then ratio of their surface areas will be

(a)

4 : 6

(b)

4 : 9

(c)

6 : 9

(d)

16 : 36

15. Which of the following cannot be taken as probability of an event?

(a)

0

(b)

0.5

(c)

1

(d)

-1