Class 9th MCQ Test for Chapter 1
Class 9th Maths Chapter 1st MCQ Test 2
Questions Answer of class 9th Maths Chapter 1st CBSE
1) Is 0 a rational number ?
a. Yes
b. No
c. Cannot be explained
d. None of the above
Explanation : Answer: a
Explanation: 0 is a rational number and we can write it in form of p/q.
0/5 = 0
Q:2 The three rational numbers between -5 and -6 are:
a. -26/5, -27/5, -28/5
b. -23/5, -27/5, -28/5
c. -26/5, -27/5, -30/5
d.11/4, 12/4, 13/4
Answer: a
Explanation: There are many rational numbers between -5 and -6
So first write -5/1 and -6/1
To find 3 rational numbers, we need to multiply and divide both the numbers by 5.
-25/5 and -30/5
Q:3 Between any two numbers, how many rational numbers we can find:
a. One
b. Two
c. Infinite
d. No
Explanation :Take the reference from question number 2 explained above
Q:4 √64 is __________ number.
a. A rational
b. An irrational
c. Neither rational nor irrational
d. None of the above
Answer: a
Explanation: √64 = 8
Hence, √64 is a rational number.
Q:5 Which of the following is a rational number?
a. √4
b. √9
c. √2
d. √100
Answer: c
Explanation: √2 cannot be simplified to a rational number.
√4 = 2
√9 = 3
√2 = 1.414……. ( non repeating and non – terminating )
√100= 10
Best questions for class 9th Maths
Q:6 The value of 2√3 + 3√12 is equal to:
a. 6√3
b. 8√3
c. 4√12
d. 7√12
Answer: b
Explanation:
2√3 + 3√12
2√3 + 3 √(2 *2*3)…… ( prime factors of 12 = 2 *2*3 )
2√3 + 3 * 2√3 ……. ( 2 become in pair so we will take one out)
Q: 7Which of the following is equal to x4?
a. x7 – x3
b. x7.x3
c. x7/x3
d. (x7)3
Answer: c
Q:8 The value of 7√5 + 3√5 =
a. 10
b. 10√5
c. 50
d. 4√5
Answer: c
Explanation: 7√5 + 3√5 = 10√5
Q:9 Which of the following is a rational number?
a. 0
b. √3
c. √5
d. π
Answer: a
Explanation: 0 is a rational number, and it can be written as 0/1 or 0/2 or 0/3 etc. Whereas √3, √2, and π are irrational numbers.
10. Rational numbers are
- Non-repeating and non-terminating
- Repeating and terminating
- Both the above
- None
Ans 2
Explanation : Repeating and terminating
For example 2, 3 , 3.2345, 2.333333…