#### 9th Standard Maths English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 3

9th Standard

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Maths

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

Part A

15 x 1 = 15
1. Which of the following is correct?

(a)

∅ ⊆ {a, b}

(b)

∅ ∈ {a, b}

(c)

{a} ∈ {a, b}

(d)

a ⊆ {a, b}

2. For any three A,B and C,$A-\left( B\cup C \right)$

(a)

(A-B)$\cup$(A-C)

(b)

(A-B)$\cap$(A$\cup$C)

(c)

(A-B)$\cup$C

(d)

A$\cup$(B-C)

3. Which one of the following has a terminating decimal expansion?

(a)

$\frac { 5 }{ 64 }$

(b)

$\frac { 8 }{ 9 }$

(c)

$\frac { 14 }{ 15 }$

(d)

$\frac { 1 }{ 12 }$

4. Which of the following are not rational numbers?

(a)

$7\sqrt { 5 }$

(b)

$\frac { 7 }{ \sqrt { 5 } }$

(c)

$\sqrt { 36 } -9$

(d)

$\pi +2$

5. Which is the best example of a number written in scientific notation?

(a)

0.5 x 105

(b)

0.1254

(c)

5.367 x 10-6

(d)

12.5 x 102

6. The product of the polynomials p(x) = 4x –3 q(x) = 4x + 3

(a)

1 – x – 8

(b)

16x2 – 9

(c)

18x3 + 12x2 – 12x – 8

(d)

18x3 – 12x2 + 12x + 8

7. if a polynominal p(x) is divided by (ax+b), then the reminder is _______________________

(a)

$p\left( \frac { b }{ a } \right)$

(b)

$p\left( -\frac { b }{ a } \right)$

(c)

$p\left( \frac { a }{ b } \right)$

(d)

$p\left( -\frac { a }{ b } \right)$

8. Find the value of m from the equation 2x + 3y = m. If its one solution is x = 2 and y = −2 .

(a)

2

(b)

-2

(c)

10

(d)

0

9. If bisectors of ∠A and ∠B of a quadrilateral ABCD meet at O, then ∠AOB is

(a)

∠C + ∠D

(b)

$\frac { 1 }{ 2 } (\angle C+\angle D)$

(c)

$\frac { 1 }{ 2 } \angle C+\frac { 1 }{ 3 } \angle D$

(d)

$\frac { 1 }{ 3 } \angle C+\frac { 1 }{ 2 } \angle D$.

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

(a)

rhombus

(b)

trapezium

(c)

square

(d)

rectangle

11. The point M lies in the IV quadrant. The coordinates of M is _______

(a)

(a,b)

(b)

(–a, b)

(c)

(a, –b)

(d)

(–a, –b)

12. 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

13. The value of 3sin700sec200 + 2sin490sec510 is

(a)

2

(b)

3

(c)

5

(d)

6

14. The total surface area of a cuboid is

(a)

4a2 sq. units

(b)

6a2 sq. units

(c)

2(l + b)h sq. units

(d)

2(lb + bh + lh) sq. units

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

(a)

0

(b)

0.5

(c)

1

(d)

-1