Question Paper
Class / Subject: Class 9 (ICSE) · Mathematics
Chapter: Chapter 1 — Chapter 1: Rational and Irrational Numbers
Time Allowed: 32 minutes
Max Marks: 16
1. What is a rational number? [1]
(A) One expressible as p/q
(B) One that cannot be expressed as p/q
(C) Only a whole number
(D) Only a negative number
2. What is an irrational number? [1]
(A) One that cannot be expressed as p/q
(B) One expressible as p/q
(C) Only a whole number
(D) Only a positive number
3. What is an example of an irrational number? [1]
(A) √2
(B) 3/4
(C) 5
(D) 0.5
4. What type of decimal do rational numbers have? [1]
(A) Terminating or repeating
(B) Non-terminating, non-repeating
(C) No decimal form
(D) Only whole numbers
5. What type of decimal do irrational numbers have? [1]
(A) Non-terminating, non-repeating
(B) Terminating
(C) Repeating only
(D) No decimal form
6. What do rational and irrational numbers together form? [1]
(A) Real numbers
(B) Only whole numbers
(C) Only integers
(D) Only fractions
7. Is π rational or irrational? [1]
(A) Irrational
(B) Rational
(C) Neither
(D) Both
8. Why learn this distinction? [1]
(A) To classify numbers correctly in advanced maths
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is a rational number? [1]
(A) One expressible as p/q
(B) One that cannot be expressed as p/q
(C) Only a whole number
(D) Only a negative number
10. What is an irrational number? [1]
(A) One that cannot be expressed as p/q
(B) One expressible as p/q
(C) Only a whole number
(D) Only a positive number
11. What is an example of an irrational number? [1]
(A) √2
(B) 3/4
(C) 5
(D) 0.5
12. What type of decimal do rational numbers have? [1]
(A) Terminating or repeating
(B) Non-terminating, non-repeating
(C) No decimal form
(D) Only whole numbers
13. What type of decimal do irrational numbers have? [1]
(A) Non-terminating, non-repeating
(B) Terminating
(C) Repeating only
(D) No decimal form
14. What do rational and irrational numbers together form? [1]
(A) Real numbers
(B) Only whole numbers
(C) Only integers
(D) Only fractions
15. Is π rational or irrational? [1]
(A) Irrational
(B) Rational
(C) Neither
(D) Both
16. Why learn this distinction? [1]
(A) To classify numbers correctly in advanced maths
(B) No reason
(C) It's not useful
(D) Only for tests