CBSE Class 8 Mathematics Squares and Square Roots MCQs Set B

uestions ———- is the inverse operation of square.
(a) Cube root
(b) Square root
(c) Perfect root

Answer: B

Questions If a number ends in 0, 1, 4, 5, 6 or 9 then it must be ————–
(a) Square number
(b) A cube
(c) perfect number

Answer: A

Questions The square of an even number is always ————–
(a) Odd
(b) Even
(c) Zero

Answer: B

Questions The sum of first n odd natural numbers is ————
(a) n
(b) 𝑛²
(c) 𝑛³

Answer: B

Questions How many natural numbers lies between 9² and 10²?
(a) 9
(b) 18
(c) 27

Answer: B

Questions Which of the following is a square of an odd number?
(a) 361
(b) 196
(c) 256

Answer: A

Questions Which of the following is a Pythagorean triplet?
(a) 2m, m-1, m+1
(b) 2m, 𝑚²-1, 𝑚²+1
(c) m, m-1, m+1

Answer: B

Questions There are ——- integral square roots of a perfect square number.
(a) One
(b) Two
(c) Three

Answer: B

Questions Which of the following is not a perfect square?
(a) 361
(b) 324
(c) 288

Answer: C

Questions There are ———– non perfect square numbers between the squares of the numbers n and (n+1).
(a) n
(b) 2n
(c) 3n

Answer: B

Questions If a natural number m can be expressed as 𝑛², where n is also a natural number, then m is a ————
(a) Square number
(b) Perfect number
(c) Cube number

Answer: A

Questions The sum of first five odd natural numbers is —–
(a) 20
(b) 25
(c) 30

Answer: B

Questions The number of zeroes in square of 200 is ———–
(a) 2
(b) 4
(c) 6

Answer: B

Questions A perfect square number between 20 and 30 is ————
(a) 24
(b) 25
(c) 26

Answer: B

Questions A number is called a ———– if it is expressed as the square of a number.
(a) Perfect number
(b) Perfect Square
(c) Perfect Cube

Answer: B