## MCQ Questions for Class 8 Maths: Ch 7 Cubes and Cube Roots

1. Ones place digit in the cube of 5832 is ______.
(a) 5
(b) 7
(c) 2
(d) 8
â–º (d) 8

2. What is the cube of double of â€˜aâ€™?
(a) 16a3
(b) 2a
(c) 8a3
(d) 4a2
â–º (c) 8a3

3. If (2744)1/3 = 2p+2, then the value of P is
(a) 3
(b) 6
(c) 2
(d) 8
â–º (b) 6

4. Each prime factor appears _________ times in its cube?
(a) 2
(b) 3
(c) 1
(d) 4
â–º (b) 3

5. The value of 53 is __________.
(a) 125
(b) 15
(c) 10
(d) 75
â–º (a) 125

6. A natural number is said to be a perfect cube, if it is the cube of some _________.
(a) natural number
(b) square number
(c) cube number
(d) cuboid number
â–º (a) natural number

7. The square of a natural number subtracts from its cube comes 100. The number is __________.
(a) 2
(b) 3
(c) 5
(d) 1
â–º (c) 5

8. The expansion of a3 is ___________.
(a) 3 Ã— a
(b) a + a + a
(c) 3 Ã— 3 Ã— 3
(d) a Ã— a Ã— a
â–º (d) a Ã— a Ã— a

9. If volume of cube is 4913cmÂ³ then length of side of cube is
(a) 16 cm
(b) 17 cm
(c) 18 cm
(d) 19 cm
â–º (b) 17 cm

10. What will be the unit digit of the cube of a number ending with 6 ?
(a) 4
(b) 6
(c) 2
(d) 8
â–º (b) 6

11. The numbers 1, 8, 27... are ______.
(a) negative numbers
(b) cube numbers
(c) square numbers
(d) none of these
â–º (b) cube numbers

12. The cube of 23 is ___________
(a) 2304
(b) 23
(c) 12167
(d) 529
â–º (c) 12167

13.The smallest natural number by which 704 must be divided to obtain a perfect cube is
(a) 22
(b) 12
(c) 11
(d) 13
â–º (c) 11

14. Express 63 as the sum of odd numbers.
(a) 31 + 33 + 35 + 37 + 39 + 41 + 43
(b) 31 + 33 + 35 + 37 + 39 + 41
(c) 31 + 33 + 35 + 37 + 39 + 41 + 43 + 45
(d) none of these
â–º (b) 31 + 33 + 35 + 37 + 39 + 41

15. The symbol for cube root is __________.
(a) âˆš3
(b) âˆ›
(c) 2âˆš3
(d) 3âˆš3
â–º (b) âˆ›

16. The cube of an odd number is always __________.
(a) odd number
(b) even number
(c) prime number
(d) none of these
â–º (a) odd number

17. What will be the unit digit of the cube root of a number ends with 8?
(a) 2
(b) 8
(c) 4
(d) 6
â–º (a) 2

18. The cube root of the 216 x (âˆ’32) x 54 is ________
(a) -36
(b) -72
(c) -48
(d) none of these
â–º (b) -72

19. Ones digit of cube of a number depends on the ________ of the number.
(a) tens digit
(b) ones digit
(c) hundred digit
(d) none of these
â–º (b) ones digit

20. If (504 + p) is a perfect cube number, whose cube root is p, then p = ______.
(a) 6
(b) 4
(c) 2
(d) 8
â–º (d) 8

21. How many digits will be there in the cube root of 46656 ?
(a) 2
(b) 1
(c) 3
(d) 4
â–º (a) 2

22. Find the cube root of 0.001331.
(a) 0.111
(b) 0.101
(c) 0.11
(d) none of these
â–º (c) 0.11
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