We have compiled the NCERT MCQ Questions for Class 8 Maths Chapter 7 Cubes and Cube Roots with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 8 Maths with Answers on a daily basis and score well in exams. Refer to the Cubes and Cube Roots Class 8 MCQs Questions with Answers here along with a detailed explanation.

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

Choose the correct option.

Question 1.

Which of the following number is not a cube number?

(a) 100000

(b) 3375

(c) 125

(d) 1331

## Answer

Answer: (a) 100000

Question 2.

The cube of an even natural number is

(a) odd

(b) even

(c) may be even, may be odd

(d) prime number

## Answer

Answer: (b) even

Question 3.

The cube of an odd natural number is

(a) prime

(b) even

(c) odd

(d) May be even, may be odd

## Answer

Answer: (c) odd

Question 4.

The ones digit of the cube of the number 512 is

(a) 2

(b) 4

(c) 6

(d) 8

## Answer

Answer: (d) 8

Question 5.

If the digit in one place of a number is 6, then its cube will end with its digits

(a) 2

(b) 3

(c) 6

(d) 9

## Answer

Answer: (c) 6

Question 6.

The volume of a cubical box is 343 cm³ which of the following is the side of the box?

(a) 5 cm

(b) 4 cm

(c) 6 cm

(d) 7 cm

## Answer

Answer: (d) 7 cm

Question 7.

The number of zeros at the end of the cube root of the cube number 1000000 is…

(a) 1

(b) 2

(c) 3

(d) 4

## Answer

Answer: (c) 3

Question 8.

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

## Answer

Answer: (b) 3

Question 9.

Find the smallest number by which the number 88 must be divided to obtained a perfect cube.

(a) 5

(b) 7

(c) 9

(d) 11

## Answer

Answer: (d) 11

Question 10.

Which of the following is a perfect cube?

(a) 10,000

(b) 243

(c) 343

(d) 270000

## Answer

Answer: (c) 343

Question 11.

Which of the following is a correct statement?

(a) cube of a negative number is always positive.

(b) cube of a negative number is always negative.

(c) cube of a negative number may be positive or negative.

(d) all of the above.

## Answer

Answer: (b) cube of a negative number is always negative.

Question 12.

If the digits in ones place of number is 2, then the ending digits of its cube will be:

(a) 2

(b) 4

(c) 6

(d) 8

## Answer

Answer: (d) 8

Fill in the blanks

Question 1.

In the given numbers 6, 12, 24, 48, 64, 100 and 125, the perfect cubes are ………………… and …………………

## Answer

Answer: 64, 125

Question 2.

The value of \(\sqrt [3]{-8×27}\) = …………………

## Answer

Answer: 6

Question 3.

The number of zeros at the end of the cube of the number 30 is …………………

## Answer

Answer: 3

Question 4.

The volume of the cube is 343 cm³. The edge of the cube is …………………

## Answer

Answer: 7 cm

Question 5.

The smallest number by which 32 must be multiplied to get a perfect cube is …………………

## Answer

Answer: 2

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