Free PDF Download of CBSE Maths Multiple Choice Questions for Class8 with Answers Chapter 1 Rational Numbers. Maths MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 8 Maths Rational Numbers MCQs Pdf with Answers to know their preparation level.
Rational Numbers Class 8 Maths MCQs Pdf
1. An integer can be:
a) Only Positive
b) Only Negative
c) Both positive and negative
d) None of the above
Answer/Explanation
Answer: (c)
Explanation: An integer can be both positive and negative as well as zero.
2. A rational number can be represented in the form of:
a) p/q
b) pq
c) p+q
d) p-q
Answer/Explanation
Answer: (a)
Explanation: A rational number can be represented in the form p/q where p and q are integers and q is not equal to zero.
3. The value of ½ x ⅗ is equal to:
a) ½
b) 3/10
c) ⅗
d) ⅖
Answer/Explanation
Answer: (b)
Explanation: ½ x ⅗ = (1×3)/(2×5) = 3/10
4. The value of (½) ÷ (⅗) is equal to:
a) 3/10
b) ⅗
c) 6/5
d) ⅚
Answer/Explanation
Answer: (d)
Explanation: (½) ÷ (⅗) = (½) x (5/3) = (1×5)/(2×3) = ⅚
5. The value of ½ + ¼ is equal to:
a) ¾
b) 3/2
c) ⅔
d) 1
Answer/Explanation
Answer: (a)
Explanation: ½ + ¼
Making the denominator equal:
2/4 + ¼ = (2+1)/4 = ¾
6. The value of 5/4 – 8/3 is:
a) 17/12
b) -17/12
c) 12/17
d) -12/17
Answer/Explanation
Answer: (b)
Explanation: 5/4 – 8/3
Making the denominator equal:
[(5/4) x (3/3)] – [(8/3) x (4/4)]
15/12 – 32/12
= (15-32)/12
= -17/12
7. The associative property is applicable to:
a) Addition and subtraction
b) Multiplication and division
c) Addition and Multiplication
d) Subtraction and Division
Answer/Explanation
Answer: (c)
Explanation: As per associative property:
A+B = B+A
A.B = B.A
Where A and B are two integers.
8. The value of (-10/3) x (-15/2) x (17/19) x 0 is:
a) 0
b) 22.66
c) 20
d) 35
Answer/Explanation
Answer: (a)
Explanation: Any number multiplied by zero is equal to zero.
9. The additive identity of rational numbers is:
a) 0
b) 1
c) 2
d) -1
Answer/Explanation
Answer: (a)
Explanation: Any number added to zero is equal to the number itself.
Ex: 5+0 = 5
10. The multiplicative identity of rational numbers is:
a) 0
b) 1
c) 2
d) -1
Answer/Explanation
Answer: (b)
Explanation: Any number multiplied by 1 is equal to the number itself
Ex: 5 x 1 = 5
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