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

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

Question 2.
The cube of an even natural number is
(a) odd
(b) even
(c) may be even, may be odd
(d) prime number

Question 3.
The cube of an odd natural number is
(a) prime
(b) even
(c) odd
(d) May be even, may be odd

Question 4.
The ones digit of the cube of the number 512 is
(a) 2
(b) 4
(c) 6
(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

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

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

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

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

Question 10.
Which of the following is a perfect cube?
(a) 10,000
(b) 243
(c) 343
(d) 270000

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: (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

Fill in the blanks

Question 1.
In the given numbers 6, 12, 24, 48, 64, 100 and 125, the perfect cubes are ………………… and …………………

Question 2.
The value of $$\sqrt {-8×27}$$ = …………………

Question 3.
The number of zeros at the end of the cube of the number 30 is …………………

Question 4.
The volume of the cube is 343 cm³. The edge of the cube is …………………