# MCQ Questions | Class 8 Maths Chapter 7 | Cubes and Cube Roots with Answers

## MCQ | Cubes and Cube Roots Class 8

Check the below NCERT MCQ Questions for Class 8 Maths Chapter 7 Cubes and Cube Roots with Answers Pdf free download. MCQ Questions for Class 8 Maths with Answers were prepared based on the latest exam pattern. We have Provided Cubes and Cube Roots Class 8 Maths MCQs Questions with Answers to help students understand the concept very well.

### Objective Question | NCERT Maths Class 8

Book: National Council of Educational Research and Training (NCERT) Central Board of Secondary Education (CBSE) 8th Maths 7 Part-3 Cubes and Cube Roots English

#### Ncert Solutions for Class 8 Maths | Objective Type Questions

You can refer to NCERT Solutions for Class 8 Maths Chapter 7 Cubes and Cube Roots to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.
##### Cubes and Cube Roots | Class 8 Maths | NCERT Solutions
 Q1. CBSE Class 8 Maths Mcq Questions Find the smallest number by which the number 256 must be divided to obtain a perfect cube. A. 2 B. 4 C. 8 D. 16.
Ans: 4
Hint:
256 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2
= 2³ × 2³ × 2 × 2.
 Q2. CBSE Class 8 Maths Cubes and Cube Roots Mcq Questions Find the smallest number by which the number 36 must be multiphed to obtain a perfect cube. A. 6 B. 2 C. 3 D. 4.
Ans: 6
Hint:
36 = 2 × 2 × 3 × 3.
 Q3. Class 8 Maths Mcq Chapter 7 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.
Ans: 6
Hint:
1296 =2 × 2 × 2 × 2 × 3 × 3 × 3 × 3
= 2³ × 2 × 3³ × 3.
 Q4. Class 8 Maths Mcq online test Find the smallest number by which the number 392 must be multiplied to obtain a perfect cube. A. 3 B. 5 C. 7 D. 6.
Ans: 7
Hint:
392 = 2 × 2 × 2 × 7 × 7 = 2³ × 7 × 7.
 Q5. Class 8 Maths Mcq with answers 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.
Ans: 7
Hint:
2401 = 7 × 7 × 7 × 7 = 7³ × 7.
 Q6. Learn Cbse Class 8 Maths Mcq Find the smallest number by which the number 121 must be multiplied to obtain a perfect cube. A. 7 B. 9 C. 11 D. 5.
Ans: 11
Hint:
121 = 11 × 11.
 Q7. Mcq Class 8 Maths Chapter 7 Find the smallest number by which the number 88 must be divided to obtain a perfect cube. A. 11 B. 5 C. 7 D. 9.
Ans: 11
Hint:
88 = 2 × 2 × 2 × 11 = 2³ × 11.
 Q8. Mcq for Class 8 Maths Chapter 7 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.
Ans: 4 cm
Hint:
Edge = $$\sqrt[3]{64}$$ = $$\sqrt[3]{2 × 2 × 2 × 2 × 2 × 2}$$
= $$\sqrt[3]{2^3×2^3}$$ = 2 × 2 = 4.
 Q9. Mcq Questions for Class 8 Maths with answers pdf Chapter 7 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.
Ans: 25
Hint:
Volume = 5 × 4 × 2 = 5 × 2 × 2 × 2
= 5 × 2³.
 Q10. Mcq Questions for Class 8 Maths with answers pdf download 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.
Ans: There is no perfect cube which ends with 8.
Hint:
1728 = 12³.