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

9th Standard

Reg.No. :
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Maths

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

Part A

15 x 1 = 15
1. If B – A is B, then A∩B is

(a)

A

(b)

B

(c)

U

(d)

2. If U={x:x$\in$W and x<20},A={2,4,,6,8},B={6,8,12,14} then $\left[ n\left( A\cup B^{ ' } \right) \right]$

(a)

15%

(b)

20%

(c)

10%

(d)

5%

3. When written with a rational denominator, the expression $\frac { 2\sqrt { 3 } }{ 3\sqrt { 2 } }$ can be simplified as

(a)

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

(b)

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

(c)

$\frac { \sqrt { 6 } }{ 3 }$

(d)

$\frac{2}{3}$

4. $\sqrt [ 5 ]{ 21 } \times 6\sqrt { 10 }$

(a)

$30\sqrt { 210 }$

(b)

30

(c)

$\sqrt { 210 }$

(d)

$210\sqrt { 30 }$

5. If p(a)= 0 then (x-a) is a ___________ of p(x)

(a)

divisor

(b)

quotient

(c)

remainder

(d)

factor

6. If x - 2 is a factor of q(x), then the remainder is___________

(a)

q(-2)

(b)

x - 2

(c)

0

(d)

-2

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

(a)

medians

(b)

altitudes

(c)

angle bisectors

(d)

perpendicular bisectors of side

8. 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°

9. The centre of a circle is (0, 0). One end point of a diameter is (5, -1), then ______________

(a)

$\sqrt{24}$

(b)

$\sqrt{37}$

(c)

$\sqrt{26}$

(d)

$\sqrt{17}$

10. The coordinates of the point C dividing the line segment joining the points P(2,4) and Q(5,7) internally in the ratio 2:1 is

(a)

$(\frac{7}{2},\frac{11}{2})$

(b)

(3,5)

(c)

(4,4)

(d)

(4,6)

11. 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)

$\bar X$

12. The mean of 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)

$\bar{X}$

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

(a)

0

(b)

1

(c)

2

(d)

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

14. The capacity of a water tank of dimensions 10 m × 5 m × 1.5 m is

(a)

75 litres

(b)

750 litres

(c)

7500 litres

(d)

75000 litres

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