8th Standard Maths English Medium Free Online Test Book Back 1 Mark Questions with Answer Key Part - 3

8th Standard

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Maths

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. The rational number (numbers) which has (have) additive inverse is (are)

    (a)

    7

    (b)

    \(\frac { -5 }{ 7 } \)

    (c)

    0

    (d)

    all of these

  2. If the area of a rectangle is 48m2n3 and whose length is 82mn2 then, its breadth is______

    (a)

    6mm

    (b)

    8m2n

    (c)

    7m2n2

    (d)

    6m2n2

  3. Two similar triangles will always have ________angles

    (a)

    acute

    (b)

    obtuse

    (c)

    right

    (d)

    matching

  4. How many 2 digit numbers contain the number 7?

    (a)

    10

    (b)

    18

    (c)

    19

    (d)

    20

  5. The cost of a machine is Rs.18000 and it depreciates at \(16 \frac{2}{3} \%\) annually. Its value after 2 years will be___________.

    (a)

    Rs.12000

    (b)

    Rs.12500

    (c)

    Rs.15000

    (d)

    Rs.16500

  6. The product of LCM and HCF of two numbers is 24. If one of the number is 6, then the other number is ________.

    (a)

    6

    (b)

    2

    (c)

    4

    (d)

    8

  7. The sides of a right angled triangle are in the ratio 5: 12: 13 and its perimeter is 120 units then, the sides are ______________.

    (a)

    25, 36, 59

    (b)

    10, 24, 26

    (c)

    36, 39, 45

    (d)

    20, 48, 52

  8. Find the correct answer from the four alternatives given
    If the word ‘P H O N E’ is coded as ‘S K R Q H’, how will ‘R A D I O’ be coded?

    (a)

    S C G N H

    (b)

    V R G N G

    (c)

    U D G L R

    (d)

    S D H K Q

  9. By what number should (-4)-1 be multiplied so that the product becomes 10-1?

    (a)

    \(\cfrac { 2 }{ 3 } \)

    (b)

    \(\cfrac { -2 }{ 5 } \)

    (c)

    \(\cfrac { 5 }{ 2 } \)

    (d)

    \(\cfrac { -5 }{ 2 } \)

  10.  Histogram is a graph of a ________ frequency distribution.

    (a)

    continuous

    (b)

    discontinuous

    (c)

    discrete

    (d)

    none of these

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