#### 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 15cm from the centre of the circle of radius 25cm. The length of the chord is

(a)

25cm

(b)

20cm

(c)

40cm

(d)

18cm

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