# Squares and Square Roots/ MCQ/Class 8 Mathematics

Squares and Square Roots – Chapter 6/MCQ
CBSE Class 8 Mathematics/ Multiple Choice Questions- Extra Questions for Practice
Choose the correct answer from the options given below:

1. The square root of 20.25 is ———
A. 45
B. 4.5
C. 0.45
2. The area of a square is 484 square cm. Find the length of the side of the square?
A. 20
B. 21
C. 22
3. In a right angled triangle PQR, right angled at Q, PQ = 3 cm, QR = 4 cm then PR = ——-
A. 5
B. 7
C. 25
4. The square of 1.8 is ———–
A. 3.24
B. 32.4
C. 324
5. The hypotenuse and one leg of a right angled triangle are 10 cm and 8 cm respectively. Find the length of third side?
A. 2 cm
B. 6 cm
C. 9 cm
6. Which of the following is a perfect square?
A. 23
B. 24
C. 25
7. Which of the following is not a perfect square?
A. 289
B. 321
C. 361
8. The square of 35 is ————–
A. 1025
B. 1125
C. 1225
9. What will be the one digit in the square of 6435?
A. 5
B. 6
C. 9
10. What will be the number of zeroes in the square of 200?
A. 2
B. 3
C. 4
11. The perfect square number between 80 and 90 is ————-
A. 81
B. 83
C. 85
12. If a number has 1 or 9 in the units place, then its square ends in ———–
A. 1
B. 2
C. 3
13. The square of which of the following numbers would be an odd number?
A. 727
B. 158
C. 1980
14. How many natural numbers lie between the squares of 10 and 11?
A. 20
B. 21
C. 22
15. Which of the following is not a Pythagorean triplet?
A. 3, 4, 5
B. 6, 8, 10
C. 5, 6, 8
16. The square of (-7) is ———-
A. 14
B. 49
C. -49
17. How many 3s are there in the prime factorisation of 324?
A. 3
B. 4
C.2
18. The square root of 6400 is ————-
A. 8
B. 80
C. 800