CBSE Class 8 Mathematics A Square and A Cube MCQs Set C

Question. Positive square root of 64 is.
(a) 32
(b) 8
(c) 16
(d) -8

Answer: B

Question. Consecutive squares are like 4 and 9, the difference 9 - 4 is.
(a) 4
(b) 5
(c) 6
(d) 3

Answer: B

Question. To check if 25 is a square, we subtract odd numbers 1, 3, 5, 7, 9. The result is.
(a) 1
(b) 0
(c) 5
(d) 10

Answer: B

Question. 156 is not a perfect square because factors cannot be.
(a) added
(b) paired up
(c) subtracted
(d) sold

Answer: B

Question. The square of a number ending in 5 will always end in.
(a) 1
(b) 5
(c) 0
(d) 6

Answer: B

Question. Square root of 1936 is between.
(a) 20 and 30
(b) 40 and 50
(c) 50 and 60
(d) 10 and 20

Answer: B

Question. Last digit of 1936 is 6, so root ends in.
(a) 1 or 9
(b) 4 or 6
(c) 2 or 8
(d) 5

Answer: B

Question. What determines if a locker remains open or closed in the puzzle?
(a) Whether it is toggled an even or odd number of times
(b) Its locker number being a prime number
(c) The total number of people who enter the room
(d) The person number who toggles it last

Answer: A

Question. How many square numbers are there between 1 and 100?
(a) 5
(b) 10
(c) 8
(d) 12

Answer: B

Question. Which of the following is not a perfect square?
(a) 196
(b) 625
(c) 1225
(d) 404

Answer: D

Question. What is the square root of 49?
(a) 4
(b) 7
(c) 9
(d) 14

Answer: B

Question. If a number ends with 3, we can say it is.
(a) a square
(b) not a square
(c) maybe square
(d) always square

Answer: B

Question. Look at numbers ending in 7, they will never be a.
(a) prime
(b) factor
(c) perfect square
(d) odd number

Answer: C

Question. Which of the following digits cannot be the units digit of a perfect square?
(a) 0
(b) 4
(c) 7
(d) 9

Answer: C

Question. If area is 125, can we cut a square cloth of side 15?
(a) yes
(b) no
(c) maybe
(d) only if we double it

Answer: B

Question. Prime factorisation of 324 is (2x2) x (3x3) x (3x3), so its root is.
(a) 12
(b) 18
(c) 16
(d) 9

Answer: B

Question. Side of square cloth is 11, then its area is.
(a) 125
(b) 121
(c) 144
(d) 110

Answer: B

Question. If a number has 6 in the units place, its square root ends in.
(a) 4 or 6
(b) 2 or 8
(c) 1 or 9
(d) 5 only

Answer: A

Question. In prime factorisation of a square, we group factors in.
(a) pairs
(b) triplets
(c) fours
(d) fives

Answer: A

Question. The total non-square numbers between the squares of 30 and 31 are
(a) 60
(b) 61
(c) 62
(d) 63

Answer: A