Mathematics
MCQ | Class 09 | Chapter 1
Real Numbers
MCQ | CHAPTER - 1 | CLASS IX
REAL NUMBERS
Q1) Can we write 0 in the form of p/q?
a. Yes
b. No
c. Cannot be explained
d. None of the above
Answer: a
Q2) Which of the following is Natural number?
a) 3.5
b) 7
c) 0
d) -2
Answer b
Q3) The three rational numbers between 3 and 4 are:
a. 5/2, 6/2, 7/2
b. 13/4, 14/4, 15/4
c. 12/7, 13/7, 14/7
d.11/4, 12/4, 13/4
Answer: b
Q4) Which of the following option is true based on the below statements?
i) All integers are rational numbers.
ii) All rational numbers are integers.
a) Both statements are true
b) Statement (i) is true and Statement (ii) is false
c) Statement (i) is false and Statement (ii) is true
d) Both statements are false
Answer b
Q5) In between any two numbers, there are:
a. Only one rational number
b. Two rational numbers
c. Infinite rational numbers
d. No rational number
Answer: c
Q6) How many whole numbers are there between -3 and 3 (Including -3 and 3)?
a) Four
b) Zero
c) Seven
d) Three
Answer a
Q7) Every rational number is:
a) Whole number
b) Natural number
c) Integer
d) Real number
Answer: d
Q8) 0.3333… is a/an ______________
a) natural number
b) whole number
c) rational number
d) irrational number
Answer c
Q9) √9 is __________ number.
a) A rational
b) An irrational
c) Neither rational nor irrational
d) None of the above
Answer: a
Q10) Which of the following is an irrational number?
a) √16
b) √(12/3)
c) √12
d) √100
Answer: c
Q11) 3√6 + 4√6 is equal to:
a) 6√6
b) 7√6
c) 4√12
d) 7√12
Answer: b
Q12) By rationalizing the denominator of 
, we get
a) 
b) 
c) 
d) 
Answer d
Q13) The decimal expansion of an irrational number may be:
a) Terminating
b) Recurring
c) Either terminating or non- terminating
d) Non-terminating and non-recurring
Answer d
Q 14) By rationalize the denominator of 
we get
a) 
b) 
c) 
d) 
Answer b
Q 15) Which of the following is equal to x3?
a) x6 –
x3
b) x6.x3
c) x6/x3
d) (x6)3
Answer:
c
Q 16) Which of the following is an irrational number?
a) √23
b) √225
c) 0.3796
d) 7.478478
Answer: a
Q 17) By
simplifying (8)2/3, we get __________
a) 4
b) 16
c) (8)2/(8)3
d) 32
Answer: a
Q 18) Which of the following is an irrational number?
a) 0.14
b) 0.1416¯
c) 0.1416......
d) 0.4014001400014…
Answer: d
Q 19) 2√3 + √3 =
a) 6
b) 2√6
c) 3√3
d) 4√6
Answer: c
a) (√7+2)/3
b) (√7-2)/3
c) (√7+2)/5
d) (√7+2)/45
Answer: a
Q 21) Which of the following is rational?
a) 4/0
b) 0/4
c) √3
d) π
Answer: b
Q 22) The irrational number between 2 and 2.5 is
a) √11
b) √5
c) √22.5
d) √12.5
Answer: b
Q 23) The value of √10 times √15 is equal to
a) 5√6
b) √25
c) 10√5
d) √5
Answer: a
Q24) The decimal representation of the rational number is
a) Always terminating
b) Either terminating or repeating
c) Either terminating or non-repeating
d) Neither terminating nor repeating
Answer: b
Q25) Which of the following is a rational number?
a) 0
b) 2√3
c) 2 + √3
d) π
Answer: a
Q26) Which of the following is an irrational number?
a) √(4/9)
b) √12/√3
c) √7
d) √81
Answer: c
Q 27) Simplified value of ^{-1/4}\times%20\sqrt[4]{16})
is
a) 16
b) 4
c) 1
d) 0
Ans: c
Q28) Find the value of ^{-2}})
a) 1/8
b) 1/2
c) 8
d) 1/64
Answer: a
Q 29) Find the value of 
a) 1
b) -1
c) 9
d) 6
Ans a
Q30) When 
is divided by 3√3 find the quotient.
a) 5√3
b) 3√5
c) 5√5
d) 3√3
Answer: (c)
Q35) The product of a rational and an irrational numbers is:
a) Always an integer
b) Always a rational number
c) Always an irrational number
d) Sometimes rational and sometimes irrational
Answer c
Q36) √12 X √15 is equal to:
a) 5√6
b) 6√5
c) 10√5
d) √25
Answer b
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