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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