Q1 is it possible to write 0 in the dimension of p/q?

1. Yes
2.  No
3.  Can’t be written
4. . None of them

Hint: Rational Number can be written as p/q.

Q2 Which are the three rational numbers written between 3 and 4:

1. 11/4, 12/4, 13/4
2.  5/2, 6/2, 7/2
3. 13/4, 14/4, 15/4
4. 12/7, 13/7, 14/7

Hint: The rational numbers between 3 and 4 can be found by multiplying and dividing the numbers by their sum, i.e. 4.

Therefore, 3 X (4/4) = 12/4 and 4 X 4/4= 16/ 4

So, the three rational numbers between these two numbers are 13/4, 14/4, and 15/4

Q3 Which of statement is true- there are _ between any two numbers?

1. No rational number
2. More than one rational number
3. Just one rational number
4. Infinite Rational Numbers

Hint- You can use second MCQ as a reference.

Q4 All the rational numbers are:

1. Natural Numbers
2. Integer
3. Real Number
4. None of the above

Q 5 is there any irrational number below?

1. √12

2. √ (16/4)

3. √100

4. √16

Hint: You can’t simplify √9 as an rational number.

Q 6 Which of these are an rational number?

1. √1

2. √2

3. √9

4. √5

Hint: √9 can also written as 3 that is an rational number

Q7 Is there any irrational number below?

A. 1/5

B. 3/4

C. 1/2

D. √21

Q8 2 √5 + √5

A. 7

B. 2 √3

C. √7

D. 3√5

Q9 Which is the right example of a whole number?

A. -2

B. 3.2

C. 3 ½

D. 0

Q 10 The combination of an rational and an irrational number is:

A. Only an integer

B. Only an irrational number

C. Either rational or irrational

D. Only an rational number

Q 11 Which one is the X2?

A. X.X.X

B. XX

C. x2/4 X x6/4

D. x12/7 – x5/7

Q 12 4√5 + 5√5 means

 A. 7 √6

 B. 9√5

C. 8√10

D. 2√4

Q 13 What an decimal expansion of an irrational number can be called:

A. Recrurring

B. Terminating

C. None of terminating & non-terminating

D. Can be terminating or non-terminating

Q 14 There is/are _____ between two rational numbers?

A. Only a single rational number

B. Multiple irrational numbers

C. Infinite rational numbers

D. Only irrational numbers

Q 15 Which rational number lies between 1 and 2?

A. 9/3

B. 1/3

C. 3/2

D. 5/2

Q 16 Every integer is a:

A. irrational number

B. whole number

C. rational number

D. natural number

Q 17 What value we get after adding 2 √3 and 3 √2?

A. 2 √3 + 3V2

B. 6√6

C. 5 √3

D. none of these

Q 18. Adding 0.3¯ and 0.4¯ =

A. 0. 7¯

B. 0.4¯

C. 0.1¯

D. 0.12¯

Q. 19 Is √12 considered an pure surd?

A. Yes

B. No

C. Either yes or no

D. None of these

Q. 20 Which is the irrational number?

A. 0.16

B. 0.4014001400014

 C. 0.14

D. None of these

You can download pdf of all these Number System class 9 MCQ with Answer with PDF by clicking the link below.

Number System class 9 MCQ with Answer with PDF