#### 9th Standard Maths English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 2

9th Standard

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Maths

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

Part A

15 x 1 = 15
1. The set P = {x | x ∈ Z , –1 < x < 1} is a

(a)

Singleton set

(b)

Power set

(c)

Null set

(d)

Subset

2. Number of subsets in set A = {1,2,3} is ________

(a)

3

(b)

6

(c)

8

(d)

9

3. The smallest rational number by which $\frac { 1 }{ 3 }$  should be multiplied so that its decimal expansion terminates after one place of decimal is

(a)

$\frac { 1 }{ 10 }$

(b)

$\frac { 3 }{ 10 }$

(c)

3

(d)

30

4. The decimal form of -$\frac { 3 }{ 4 }$ is_______________

(a)

- 0.75

(b)

- 0.50

(c)

-0.25

(d)

- 0.125

5. $\cfrac { \sqrt [ 3 ]{ 27 } }{ \sqrt [ 5 ]{ 3 } }$ is equal to_______

(a)

$5\sqrt { 9 }$

(b)

$5\sqrt { 6 }$

(c)

$5\sqrt { 24 }$

(d)

$\sqrt [ 5 ]{ 30 }$

6. The zero of the polynomial 2x+5 is

(a)

$\frac {5}{2}$

(b)

$-\frac {5}{2}$

(c)

$\frac {2}{5}$

(d)

$-\frac {2}{5}$

7. The coefficient of ${ x }^{ 2 }\quad and\quad x\quad in\quad 2{ x }^{ 3 }-5{ x }^{ 2 }+6x-3\quad are\quad respectively$____________________

(a)

2, -5

(b)

2, 6

(c)

-5, 6

(d)

-5, -3

8. ABCD is a square, diagonals AC and BD meet at O. The number of pairs of congruent triangles are

(a)

6

(b)

8

(c)

4

(d)

12

9. Diagonal of which of the following quadrilaterals do not bisect it into two congruent triangles?

(a)

rhombus

(b)

trapezium

(c)

square

(d)

rectangle

10. Point (0, –7) lies ________________________________

(a)

on the x-axis

(b)

(c)

on the y-axis

(d)

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

(a)

+ ve x-axis

(b)

+ ve y-axis

(c)

- ve x-axis

(d)

- ve y-axis

12. Which one of the following is not a measure of central tendency?

(a)

Mean

(b)

Range

(c)

Median

(d)

Mode.

13. If the mean of five observations x,x+2,x+4,x+6,x+8, is 11, then the mean of first three observations is

(a)

9

(b)

11

(c)

13

(d)

15

14. if sin $\alpha$ = $\frac { 1 }{ 2 }$ and $\alpha$ is a cute, then (3 cos$\alpha$ - 4cos3 $\alpha$) is equal to

(a)

0

(b)

$\frac { 1 }{ 2 }$

(c)

$\frac { 1 }{ 6 }$

(d)

-1

15. 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