MCQ Questions for Class 8 Maths: Ch 6 Squares and Square Roots

MCQ Questions for Class 8 Maths: Ch 6 Squares and Square Roots

1. Find the least number that must be subtracted from 5607 so as to get a perfect square.
(a) 130
(b) 135
(c) 131
(d) none of these
► (c) 131

2. Which of the following would end with digit 1?
(a) 1232
(b) 1612
(c) 772
(d) 822
► (b) 1612

3. Find the square of 39.
(a) 1500
(b) 78
(c) 1521
(d) none of these
► (c) 1521

4. The square of 23 is :
(a) 529
(b) 526
(c) 461
(d) 429
► (a) 529

5. Sum of squares of two numbers is 145. If square root of one number is 3, find the other number.
(a) 136
(b) 8
(c) 9
(d) 64
► (b) 8

6. If a number has 1 or 9 in the unit’s place, then it’s square ends in ________.
(a) 3
(b) 9
(c) 1
(d) none of these
► (c) 1

7. The largest perfect square between 4 and 50 is
(a) 25
(b) 36
(c) 49
(d) 45
► (c) 49

8. What will be the number of digits in the square root of 1296?
(a) 2 
(b) 3
(c) 1
(d) 4
► (a) 2 

9. How many natural numbers lie between 92 and 102?
(a) 15
(b) 19
(c) 18
(d) 17
► (c) 18

10. Without adding,find the sum of 1+3+5+7+9+11+13+15+17+19
(a) 100
(b) 64
(c) 49
(d) 81
► (a) 100

11. Which is the greatest three-digit perfect square?
(a) 999
(b) 961
(c) 962
(d) 970
► (b) 961

12. Find the perfect square numbers between 30 and 40.
(a) 936
(b) 49
(c) 25
(d) none of these
► (a) 936

13. How many numbers lie between square of 12 and 13
(a) 22
(b) 23
(c) 24
(d) 25
► (c) 24

14. Without doing any calculation, find the numbers which are surely perfect squares.
(a) 441
(b) 408
(c) 153
(d) 257
► (a) 441

15. The square root of 1.21 is
(a) 1.1
(b) 11
(c) 21
(d) 2.1
► (a) 1.1

16. Find the greatest 4-digit number which is a perfect square.
(a) 9990
(b) 9801
(c) 9999
(d) none of these
► (b) 9801

17. Sum of squares of two numbers is 145. If square root of one number is 3, find the other number. 
(a) 136
(b) 9
(c) 64
(d) 8
► (d) 8

18. Which of the following are the factors of ac+ ab + bc + ca  
(a) (a - c)(a - b)
(b) (a + c)(a + b)
(c) (a - c)(a + b)
(d) (a + c)(a - b)
► (b) (a + c)(a + b)

19. What could be the possible “one’s digit” of the square root of 625?
(a) 5        
(b) 0
(c) 4
(d) 8
► (a) 5        

20. What is the length of the side of a square whose area is 441 cm2 ?
(a) 21
(b) 22
(c) 20
(d) 12
► (a) 21

21. The square root of 169 is
(a) 13
(b) 1.3
(c) -1.3 
(d) 13/10
► (a) 13

22. What is smallest number with which 5400 may be multiplied so that the product is perfect cube?
(a) 5
(b) 3
(c) 4
(d) 6
► (a) 5
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