9th Standard Maths English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 5

9th Standard

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Maths

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

    Part A

    15 x 1 = 15
  1. In a class of 50 boys, 35 boys play Carrom and 20 boys play Chess then the number of boys play both games is

    (a)

    5

    (b)

    30

    (c)

    15

    (d)

    10

  2. The set of (A U B) - (A ก B) is ____________

    (a)

    (AUB)'

    (b)

    AΔB

    (c)

    (A∩B)'

    (d)

    A'UB'

  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. Which of the following are irrational numbers?
    \(\sqrt { 2+\sqrt { 3 } } \)
    \(\sqrt [ 3 ]{ 5+\sqrt { 7 } } \)
    \(\sqrt { 8-\sqrt [ 3 ]{ 8 } } \)
    \(\sqrt { 4+\sqrt { 25 } } \)

    (a)

    (ii), (iii) and (iv)

    (b)

    (i), (ii) and (iv)

    (c)

    (i), (ii) and (iii)

    (d)

    (i), (iii) and (iv)

  5. The Auto fare is found as minimum rs 25 for 3 kilometer and thereafter rs12 for per kilometer. Which of the following equations represents the relationship between the total cost ‘c’ in rupees and the number of kilometers n?

    (a)

    c = 25 + n

    (b)

    c = 25 + 12n

    (c)

    c = 25 + (n–3)12

    (d)

    c = (n–3)12

  6. The sum of \({ 5x }^{ 2 };-7x^{ 2 };8x^{ 2 };11x^{ 2 }\quad and\quad -9x^{ 2 }\) is _________________________

    (a)

    \(2{ x }^{ 2 }\)

    (b)

    \(4{ x }^{ 2 }\)

    (c)

    \(6{ x }^{ 2 }\)

    (d)

    \(8{ x }^{ 2 }\)

  7. If all the four sides of a parallelogram are equal and the adjacent angles are of 120° and 60°, then the name of the quadrilateral is ______

    (a)

    rectangle

    (b)

    square

    (c)

    rhombus

    (d)

    kite

  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. If ( x+2, 4) = (5, y–2), then the coordinates (x,y) are _____

    (a)

    (7, 12)

    (b)

    (6, 3)

    (c)

    (3, 6)

    (d)

    (2, 1)

  10. A point which lies in the III quadrant is__________________

    (a)

    (5, 4)

    (b)

    (5, - 4)

    (c)

    (-5, - 4)

    (d)

    (-5,4)

  11. The mean of the first 10 prime numbers is

    (a)

    12.6

    (b)

    12.7

    (c)

    12.8

    (d)

    12.9

  12. The mean of a,b,c,d and e is 28.If the mean of a,c and e,is 24, then mean of b and d is

    (a)

    24

    (b)

    36

    (c)

    26

    (d)

    34

  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. The value of \(\frac { 1-{ tan }^{ 2 }{ 45 }^{ 0 } }{ 1+{ tan }^{ 2 }{ 45 }^{ 0 } } \)

    (a)

    2

    (b)

    1

    (c)

    0

    (d)

    \(\frac { 1 }{ 2 } \)

  15. The number of bricks each measuring 50 cm × 30 cm × 20 cm that will be required to build a wall whose dimensions are 5 m × 3 m × 2 m is

    (a)

    1000

    (b)

    2000

    (c)

    3000

    (d)

    5000

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