9th Standard Maths English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 7

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)

    {7} ∈ {1,2,3,4,5,6,7,8,9,10}

    (b)

    7 ∈ {1,2,3,4,5,6,7,8,9,10}

    (c)

    7 ∉ {1,2,3,4,5,6,7,8,9,10}

    (d)

    {7} \(\nsubseteq \) {1,2,3,4,5,6,7,8,9,10}

  2. The set {x: x ∈ A, x ∈ B, x ∉ A ∩ B} is___________.

    (a)

    A ∩ B

    (b)

    A U B

    (c)

    A - B

    (d)

    A Δ B

  3. If A and B are two non-empty sets, then (A-B)U(A⋂B) is

    (a)

    A

    (b)

    B

    (c)

    ф

    (d)

    U

  4. Which one of the following is an irrational number

    (a)

    \(\sqrt { 25 } \)

    (b)

    \(\sqrt { \frac { 9 }{ 4 } } \)

    (c)

    \(\frac { 7 }{ 11 } \)

    (d)

    \(\pi\)

  5. If a number has a non-terminating and non-recurring decimal expansion, then it is______________ .

    (a)

    a rational number

    (b)

    a natural number

    (c)

    an irrational number

    (d)

    an integer

  6. 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

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

    (a)

    2.71 X 105

    (b)

    0.6 X 104

    (c)

    0.9871

    (d)

    125.4 X 104

  8. Degree of the polynomial (y3–2)(y3 + 1) is

    (a)

    9

    (b)

    2

    (c)

    3

    (d)

    6

  9. 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

  10. In a cyclic quadrilaterals ABCD, ㄥA=4x,ㄥC=2x the value of x is

    (a)

    30°

    (b)

    20°

    (c)

    15°

    (d)

    25°

  11. The points (–5, 2) and (2, –5) lie in the ________

    (a)

    same quadrant

    (b)

    II and III quadrant respectively

    (c)

    II and IV quadrant respectively

    (d)

    IV and II quadrant respectively

  12. Let m 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.

  13. The value of \(\frac { 2tan30° }{ 1-{ tan }^{ 2 }30° } \) is equal to

    (a)

    cos600

    (b)

    sin600

    (c)

    tan600

    (d)

    sin300

  14. The perimeter of an equilateral triangle is 30 cm. The area is

    (a)

    \(10\sqrt { 3 } \) cm2

    (b)

    \(12\sqrt { 3 } \) cm2

    (c)

    \(15\sqrt { 3 } \) cm2

    (d)

    \(25\sqrt { 3 } \) cm 2

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

    (a)

    0

    (b)

    0.5

    (c)

    1

    (d)

    -1

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