CBSE Class 8 Mathematics Cubes and Cube Roots MCQs Set A with answers available in Pdf for free download. The MCQ Questions for Class 8 Cubes and Cube Roots with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 8 by CBSE, NCERT and KVS. Multiple Choice Questions are an important part of Term 1 and Term 2 exams for Grade 8 Cubes and Cube Roots and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for NCERT Class 8 Cubes and Cube Roots and also download more latest study material for all subjects

## Cubes and Cube Roots Class 8 MCQ

Class 8 Cubes and Cube Roots students should refer to the following multiple-choice questions with answers for Cubes and Cube Roots in standard 8. These MCQ questions with answers for Grade 8 Cubes and Cube Roots will come in exams and help you to score good marks

### Class 8 Cubes and Cube Roots MCQ Questions with Answers

**CHAPTER –7. CUBES & CUBE ROOTS.**

**Put a tick mark(√) on the correct answer :**

**Q1.Which of the following numbers must be subtracted from 345 to get a perfect cube ?**

(i) 121 (ii) 131 (iii) 2 (iv) 24

**Q2.Which of the following numbers is a perfect cube ?**

(i) 343 (ii) 443 (iii) 543 (iv) 643

**Q3.Which of the following numbers must be multiplied to 392 to get a perfect cube ?**

(i) 2 (ii) 3 (iii4 (iv) 7

**Q4. By which of the following numbers 10648 must be divided to get a perfect cube ?**

(i) 2 (ii) 4 (iii) 5 (iv) 7

**Q5.What is the volume of a cube whose each side is 4cm ?**

(i) 24cm^{3} (ii) 48 cm^{3} (iii) 64 cm^{3} (iv) 125 cm^{3}^{ }

**More Questions...........................**

#### Question: The value of 3√343 X 3√−64 is

- a) –28
- b) –18
- c) 28
- d) 18

**Answer: –28**

#### Question: The length of each side of the cubical box is 2.4 m. Its volume is

- a) 13.824 cu m
- b) 13.824 cu cm
- c) 13.824 cm
^{2} - d) None of these

**Answer: 13.824 cu m**

#### Question: The cube of a number is 8 times the cube of another number. If the sum of the cubes of numbers is 243, the difference of the numbers is

- a) 3
- b) 6
- c) 4
- d) none

**Answer: 3**

#### Question: The square of a natural number subtracted from its cube is 48. The number is

- a) 4
- b) 6
- c) 5
- d) 8

**Answer: 4**

#### Question: Which of the following numbers are perfect cubes?

- a) 343
- b) 5324
- c) 108
- d) 243

**Answer: 343**

#### Question: Which of the following are the cubes of even natural numbers?

- a) 13824
- b) 3375
- c) 729
- d) 1331

**Answer: 13824**

#### Question: Which of the following are the cubes of odd natural numbers?

- a) 6859
- b) 32768
- c) 4096
- d) 1728

**Answer: 6859**

#### Question: The cube root of 0.001728 is

- a) 0.12
- b) 12
- c) 1.2
- d) none

**Answer: 0.12**

#### Question: Choose the correct statement

- a) All the above
- b) Cubes of even natural numbers are even
- c) Cubes of negative integers are negative
- d) Cubes of odd natural numbers are odd

**Answer: All the above**

#### Question: If 72K is a perfect cube, then the value of K is

- a) 3
- b) 1
- c) 2
- d) 4

**Answer: 3**

#### Question:

The cube root of 27^{2} is

- a) 9
- b) 27
- c) 3
- d) none

**Answer: 9**

#### Question: The cube of 0.9 is

- a) 0.729
- b) none
- c) 72.9
- d) 7.29

**Answer: 0.729**

#### Question: The number which is not a perfect cube among the following is

- a) 243
- b) 1331
- c) 216
- d) 512

**Answer: 243**

#### Question: The smallest number by which 2560 must be multiplied so that the product is a perfect cube is

- a) 25
- b) 15
- c) 5
- d) 10

**Answer: 25**

#### Question: The smallest number by which 8788 must be divided so that the quotient is a perfect cube is

- a) 4
- b) 16
- c) 12
- d) 32

**Answer: 4**

#### Question: The cube root of 1.331 is

- a) 1.1
- b) 0.011
- c) 0.11
- d) 11

**Answer: 1.1**

#### Question: Two cubes have volume in the ratio 1 : 27. The ratio of the area of the face of one to that of the other is

- a) 1 : 9
- b) 1 : 3
- c) 1 : 6
- d) 1 : 18

**Answer: 1 : 9**

#### Question: By what least number must 21600 be multiplied to make it a perfect cube?

- a) 10
- b) 60
- c) 6
- d) 30

**Answer: 10**

#### Question: The smallest number by which 392 must be multiplied so that the product is a perfect cube is

- a) 7
- b) 3
- c) 9
- d) 5

**Answer: 7**

#### Question: How many small cubes with edges of 10 cm can be just accommodated in a cubical box of 1 m edge?

- a) 1000
- b) 10
- c) 100
- d) 10000

**Answer: 1000**

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