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

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. The number of elements of the set {x : x ∈ Z, x2 = I} is ________

(a)

0

(b)

1

(c)

2

(d)

3

3. If $\frac { 1 }{ 7 }$= 0.142857, then the value of is______________.

(a)

0.285741

(b)

0.428571

(c)

0.285714

(d)

0.574128

4. Which one of the following is not a rational number?

(a)

$\sqrt { \frac { 8 }{ 18 } }$

(b)

$\frac { 7 }{ 3 }$

(c)

$\sqrt{0.01}$

(d)

$\sqrt{13}$

5. The degree of the polynomial $\sqrt { 2 } { x }^{ 2 }-\frac { 7 }{ 2 } { x }^{ 4 }+x-5x^{ 3 }\quad is$_____________________

(a)

2

(b)

3

(c)

4

(d)

5

6. Which of the following has x -1 as a factor?

(a)

2x -1

(b)

3x -3

(c)

4x -3

(d)

3x -4

7. The linear equation in one variable is

(a)

2x + 2 = y

(b)

5x − 7 = 6 − 2x

(c)

2t(5 − t) = 0

(d)

7p − q = 0

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

(a)

rhombus

(b)

trapezium

(c)

square

(d)

rectangle

9. AD is a diameter of a circle and AB is a chord If AD = 30 cm and AB = 24cm then the distance of AB from the centre of the circle is

(a)

10cm

(b)

9cm

(c)

8cm

(d)

6cm

10. The mean of a set of numbers is $\bar X$. If each number is multiplied by z, the mean is

(a)

$\bar X + z$

(b)

$\bar X-z$

(c)

z$\bar X$

(d)

$\bar X$

11. Let be the mid point and b be the upper limit of a class in a continuous frequency distribution.The lower limit of the class is

(a)

2m-b

(b)

2m+b

(c)

m-b

(d)

m-2b

12. The mean of the first 10 whole number is

(a)

4

(b)

4.5

(c)

5

(d)

5.5

13. The value of tan1°.tan2°.tan3°...tan89° is

(a)

0

(b)

1

(c)

2

(d)

$\frac { \sqrt { 3 } }{ 2 }$

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. A particular result of an experiment is called

(a)

Trial

(b)

Simple event

(c)

Compound event

(d)

Outcome