Cube and Cube roots , Comparing quantities , Mensuration , Exponents and powers Class 8 Maths MCQ Test

Q 1. Which of the following is false ?
(a) Cube of any odd number is odd
(b) A perfect cube does not end with two zeroes
(c) The cube of a single digit number may be a single digit number
(d) There is no perfect cube which ends with 8

Q 2. Find the smallest number by which the number 2401 must be divided to obtain a perfect cube.
(a) 7
(b) 6
(c) 5
(d) 9

Q 3. Find the smallest number by which the number 100 must be multiplied to obtain a perfect cube.
(a) 5
(b) 2
(c) 4
(d) 10

Q 4. The number of zeroes at the end of the cube root of the cube number 1000 is
(a) 1
(b) 2
(c) 3
(d) 4



Q 5. What is the one’s digit in the cube root of the cube number 4096 ?
(a) 2
(b) 6
(c) 4
(d) 9

Q 6. The one’s digit of the cube of the number 325 is
(a) 2
(b) 5
(c) 3
(d) 6.

Q 7. Which of the following numbers is a perfect cube ?
(a) 125
(b) 36
(c) 75
(d) 100



Q 8. The one’s digit of the cube of the number 68 is
(a) 1
(b) 2
(c) 6
(d) 8



Q 9. What is the one’s digit in the cube root of the cube number 2197 ?
(a) 1
(b) 2
(c) 3
(d) 7



Q 10. What is the one’s digit in the cube root of the cube number 8000 ?
(a) 0
(b) 2
(c) 4
(d) 8

Q 11. Find the smallest number by which the number 128 must be multiplied to obtain a perfect cube.
(a) 2
(b)4
(c) 3
(d) 8



Q 12. The volume of a cube is 64 cm³. The edge of the cube is
(a) 4 cm
(b) 8 cm
(c) 16 cm
(d) 6 cm



Q 13. Find the smallest number by which the number 1296 must be divided to obtain a perfect cube.
(a) 6
(b) 2
(c) 4
(d) 3



Q 14. What is the one’s digit in the cube root of the cube number 5832 ?
(a) 2
(b) 4
(c) 6
(d) 8

Q 15. The cube of an odd natural number is
(a) even
(b) odd
(c) may be even, may be odd
(d) prime number

Q 16. The ratio of 50 paise to Re 1 is
(a) 1 : 2
(b) 2 : 1
(c) 1 : 1
(d) 1 : 5



Q 17. The ratio 1 : 4 converted to percentage is
(a) 50%
(b) 25%
(c) 75%
(d) 4%

Q 18. Out of 40 students in a class, 25% passed. How many students passed ?
(a) 20
(b) 10
(c) 30
(d) 40



Q 19. There are 50 students in a class of which 40 are boys and the rest are girls. The ratio of the number of boys and number of girls is
(a) 2 : 3
(6) 1 : 5
(c) 4 : 1
(d) 2 : 5



Q 20. Apala has Rs 200 with her. She spent 80% amount she had. How much money is left with her ?
(a)Rs 10
(b) Rs 20
(c) Rs 30
(d) Rs 40

Q 21. The marked price of a book is Rs 100. The shopkeeper gives 25% discount on it. What is the sale price of the book ?
(a) Rs 100
(b) Rs 25
(c) Rs 125
(d) Rs 75

Q 22. Saroj purchased a fan for Rs 1000 and sold it for Rs 1200. What is her profit ?
(a) Rs 1000
(b) Rs 1200
(c) Rs 200
(d) Rs 800



Q 23. Sapna purchased a cycle for Rs 1000 and sold it for Rs 1200. Find her gain%.
(a) 20%
(b) 10%
(c) 40%
(d) 12%



Q 24. There are 1275 trees in Chaudhary Farm. Out of these 36% trees are of fruits. How many trees of fruits are there in Chaudhary Farm ?
(a) 459
(b) 549
(c) 945
(d) 954



Q 25. The salary of Manish is Rs 10000. His salary gets increased by 10%. Find his increased salary.
(a) Rs 9000
(b) Rs 11000
(c) Rs 8000
(d) Rs 12000



Q 26. In selling a plot of land for Rs 61200, a profit of 20% is made. The cost price of the plot is
(a) Rs 51000
(b) Rs 50000
(c) Rs 49000
(d) Rs 52000

Q 27. The S.I. of Rs 100 of 1 year at the rate of 3 paise per rupee per month is
(a) Rs 30
(b) Rs 36
(c) Rs 24
(d) Rs 48

Q 28. A shopkeeper purchased 2 refrigerators for Rs 9800 and Rs 8200 respectively. He sold them for Rs 16920. Find the loss %.
(a) 2%
(b) 4%
(c) 5%
(d) 6%

Q 29. A sofa-set was bought for Rs 10000. Its value depreciated at the rate of 10% per annum. Find its value after one year.
(a) Rs 11000
(b) Rs 9000
(c) Rs 10000
(d) Rs 1000



Q 30 – Kanti purchased a sewing machine for Rs 2000. She sold it at a loss of 40%. Find the selling price.
(a) Rs 1200
(b) Rs 400
(c) Rs 800
(d) Rs 2800.



Q 31 – The height of a cuboid whose volume is 275 cm3 and base area is 25 cm2 is:
(a) 10 cm
(b) 11 cm
(c) 12 cm
(d) 13 cm

Q 32 – If a cuboidal box has height, length and width as 20 cm, 15 cm and 10 cm respectively. Then its total surface area is:
(a) 1100 cm2
(b) 1200 cm2
(c) 1300 cm2
(d) 1400 cm2

Q 33 – The area of a trapezium is 480 cm2, the distance between two parallel sides is 15 cm and one of the parallel side is 20 cm. The other parallel side is:
(a) 20 cm
(b) 34 cm
(c) 44 cm
(d) 50 cm

Q 34 – If the length and breadth of a rectangle are 10 cm and 5 cm, respectively, then its area is:
(a) 100 sq.cm
(b) 150 sq.cm
(c) 115 sq.cm
(d) 200 sq.cm

Q 35 – The area of the quadrilateral is

(a) 6 cm²
(b) 12 cm²
(c) 3 cm²
(d) 8 cm²



Q 36 – The perimeter of the trapezium is

(a) 12 cm
(b) 24 cm
(c) 6 cm
(d) 18 cm

Q 37 – The perimeter of the figure is

(a) 4 cm
(b) 6 cm
(c) 8 cm
(d) 12 cm

Q 38. The perimeter of the figure is

(a) 5 cm
(b) 10 cm
(c) 4 cm
(d) 8 cm

Q 39. The volume of a cube of edge a is
(a) a2
(b) a3
(c) a4
(d) 6a2

Q 40. The area of a square of side a is
(a) a
(b) a2
(c) 2a
(d) 4a

Q 41. The diagram has the shape of a

(a) rectangle
(b) square
(c) parallelogram
(d) circle

Q 42. The diagram has the shape of a

(a) square
(b) rectangle
(c) triangle
(d) trapezium

Q 43. The surface area of a cuboid of length l, breadth b and height h is
(a ) lbh
(b) lb + bh + hl
(c) 2 (lb + bh + hl)
(d) 2(l + b)h

Q 44. (1 L =)
ia) 10 cm3
(b) 100 cm3
(c) 1000 cm3
(d) 10000 cm3

Q 45. The area of the figure is

(a) 8 cm2
(b) 6 cm2
(c) 12 cm2
(d) 16 cm2

Q 46. If (–3)m+1 × (-3)5 = (-3)7, then the value of m is:
(a) 5
(b) 7
(c) 1
(d) 3

Q 47. \frac{5^7}{6^7} will give the value:
(a) (5/6)7
(b) (5/6)0
(c) (5/6)–7
(d) (6/5)–7

Q 48. The multiplicative inverse of 7 – 2 is:
(a) 72
(b) 7
(c) \frac{1^2}{7}
(d) \frac{1}{7}

Q 49. (1.5 × 1011) is equal to
(a) 150000000000
(b) 15000000000
(c) 1500000000
(d)1500000000000.

Q 50. (695000) is equal to
(a) 6.95 × 105
(b) 6.95 × 103
(c) 6.95 × 106
(d) 6.95 × 104

Q 51. (149600000000) is equal to
(a) 1.496 × 1011
(b) 1.496 × 1010
(c) 1.496 × 1012
(d) 1.496 × 108

Q 52. ( 2–1 + 3–1 + 5–1)0 is equal to
(a) 2
(b) 3
(c) 5
(d) 1

Q 53. (32 × 3 – 4 × 35) is equal to
(a) 3
(b) 32
(c) 33
(d) 35

Q 54. The multiplicative inverse of 105 is
(a) 5
(b) 10
(c) 10 –5
(d) 105

Q 55. (am x an )  is equal to
(a) am+n
(b) am–n
(c) amn
(d) an–m

Q 56. (a0 )is equal to
(a) 0
(b) 1
(c) –1
(d) a

Q 57. In 102, the exponent is
(a) 1
(b) 2
(c) 10
(d) 1

Q 58. The multiplicative inverse of am is
(a) a
(b) m
(c) am
(d) a –m

Q 59. (2° + 4-1) × 22 is equal to
(a) 2
(b) 3
(c) 4
(d) 5

Q 60. (300000000) is equal to
(a) 3 × 108
(b) 3 × 107
(c) 3 × 106
(d) 3 × 109

Q 61. Volume of cuboid having length 5.1 m, breadth 2 m and height 2 m.
(a) 19.4 m2
(b) 20.4 m2
(c) 21.2 m2
(d) 24.4 m2

Q 62. The area of the trapezium is

(a) 9 cm2
(b) 6 cm2
(c) 7 cm2
(d) 24 cm2

Q 63. The area of the quadrilateral is

(a) 8 cm2
(b) 12 cm2
(c) 6 cm2
(d) 3 cm2

Q 64. The one’s digit of the cube of the number 347 is
(a) 3
(b) 4
(c) 7
(d) 1

Q 65. Which of the following numbers is not a cube number ?
(a) 10000
(b) 3125
(c) 64
(d) 729

Q 66. The number of zeroes at the end of the cube root of the cube number 1000 is
(a) 1
(b) 2
(c) 3
(d) 4

Q 67. Find the smallest number by which the number 72 must be multiplied to obtain a perfect cube.
(a) 2
(b) 3
(c) 4
(d) 6

Q 68. Apala makes a cuboid of plasticine of sides 5 cm, 4 cm, 2 cm. How many such cuboids will be needed to form a cube ?
(a) 20
(b) 25
(c) 10
(d) 16

Q 69. Find the smallest number by which the number 72 must be multiplied to obtained a perfect cube.
(a) 2
(b) 3
(c) 4
(d) 8

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