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Rational Numbers Class 8 MCQs Questions with Answers
Students are advised to solve the Rational Numbers Multiple Choice Questions of Class 8 Maths to know different concepts. Practicing the MCQ Questions on Rational Numbers Class 8 with answers will boost your confidence thereby helping you score well in the exam.
Explore numerous MCQ Questions of Rational Numbers Class 8 with answers provided with detailed solutions by looking below.
Question 1.
Which of the following forms a pair of equivalent rational numbers?
(a) \(\frac { 24 }{ 40 }\) and \(\frac { 35 }{ 50 }\)
(b) \(\frac { -25 }{ 35 }\) and \(\frac { 55 }{ -77 }\)
(c) \(\frac { -8 }{ 15 }\) and \(\frac { -24 }{ 48 }\)
(d) \(\frac { 9 }{ 72 }\) and \(\frac { -3 }{ 21 }\)
Answer
Answer: (b) \(\frac { -25 }{ 35 }\) and \(\frac { 55 }{ -77 }\)
Question 2.
Which number is in the middle if \(\frac { -1 }{ 6 }\), \(\frac { 4 }{ 9 }\), \(\frac { 6 }{ -7 }\), \(\frac { 2 }{ 5 }\) and \(\frac { -3 }{ 4 }\) arranged in descending order?
(a) \(\frac { 2 }{ 5 }\)
(b) \(\frac { 4 }{ 9 }\)
(c) \(\frac { -1 }{ 6 }\)
(d) \(\frac { -6 }{ 7 }\)
Answer
Answer: (c) \(\frac { -1 }{ 6 }\)
Question 3.
Find the multiplicative inverse of -13.
(a) 13
(b) -13
(c) \(\frac { -1 }{ 13 }\)
(d) 12
Answer
Answer: (c) \(\frac { -1 }{ 13 }\)
Question 4.
Which of the following statements is true?
(a) Every fraction is a rational number.
(b) Every rational number is a fraction.
(c) Every integer is a rational number.
(d) Both (a) and (c).
Answer
Answer: (d) Both (a) and (c).
Question 5.
Which of the following is the identity element under addition?
(a) 1
(b) -1
(c) 0
(d) None of these
Answer
Answer: (c) 0
Question 6.
What is the additive inverse of \(\frac { -2 }{ 3 }\)?
(a) 0
(b) 1
(c) \(\frac { 2 }{ 3 }\)
(d) \(\frac { -2 }{ 3 }\)
Answer
Answer: (c) \(\frac { 2 }{ 3 }\)
Question 7.
Write the additive inverse of \(\frac { 4 }{ 5 }\).
(a) 1
(b) \(\frac {-4 }{ 5 }\)
(c) \(\frac { 4 }{ 5 }\)
(d) 0
Answer
Answer: (b) \(\frac {-4 }{ 5 }\)
Question 8.
Which among the following is a rational number equivalent to \(\frac { -5 }{ -3 }\) ?
(a) \(\frac { -25 }{ 15 }\)
(b) \(\frac { 25 }{ -15 }\)
(c) \(\frac { 25 }{ 15 }\)
(d) \(\frac { -25 }{ 30 }\)
Answer
Answer: (c) \(\frac { 25 }{ 15 }\)
Question 9.
Which of the following is the reciprocal of the reciprocal of a rational number?
(a) -1
(b) 1
(c) 0
(d) The number itself
Answer
Answer: (d) The number itself
Question 10.
How is \(\frac { -28 }{ 84 }\) expressed as a rational number with numerator 4?
(a) \(\frac { 4 }{ 7 }\)
(b) \(\frac { -4 }{ 12 }\)
(c) \(\frac { 4 }{ 12 }\)
(d) \(\frac { 4 }{ -7 }\)
Answer
Answer: (b) \(\frac { -4 }{ 12 }\)
Question 11.
The value of \(\frac { 1 }{ 2 }\) × \(\frac { 3 }{ 5 }\) is equal to:
(a) \(\frac { 1 }{ 2 }\)
(b) \(\frac { 3 }{ 10 }\)
(c) \(\frac { 3 }{ 5 }\)
(d) \(\frac { 2 }{ 5 }\)
Answer
Answer: (b) \(\frac { 3 }{ 10 }\)
Question 12.
What should be subtracted from \(\frac { -7 }{ 11 }\) to get −2?
(a) \(\frac { 15 }{ 11 }\)
(b) \(\frac { -15 }{ 11 }\)
(c) \(\frac { 29 }{ 11 }\)
(d) \(\frac { -29 }{ 11 }\)
Answer
Answer: (a) \(\frac { 15 }{ 11 }\)
Question 13.
Which of the following is the Multiplicative identity for rational numbers?
(a) 1
(b) -1
(c) 0
(d) None of these
Answer
Answer: (a) 1
Question 14.
________ is not associative for rational numbers.
(a) Subtraction or Division
(b) Addition or Multiplication
(c) Addition or Division
(d) Multiplication or Division
Answer
Answer: (a) Subtraction or Division
Question 15.
Which of the following is the Multiplicative identity for rational numbers?
(a) 1
(b) -1
(c) 0
(d) None of these
Answer
Answer: (a) 1
Question 16.
A number which can be written in the form, p/q where p and q are integers and _____ is called a rational number.
(a) q = 0
(b) q ≠ 0
(c) q = 1
(d) none of these
Answer
Answer: (b) q ≠ 0
Question 17.
The value of \(\frac { 1 }{ 2 }\) + \(\frac { 1 }{ 4 }\) is equal to:
(a) \(\frac { 3 }{ 4 }\)
(b) \(\frac { 3 }{ 2 }\)
(c) \(\frac { 2 }{ 3 }\)
(d) 1
Answer
Answer: (a) \(\frac { 3 }{ 4 }\)
Question 18.
Find the multiplicative inverse of \(\frac { 1 }{ 4 }\).
(a) 4
(b) \(\frac { -1 }{ 4 }\)
(c) -4
(d) \(\frac { 1 }{ 4 }\)
Answer
Answer: (a) 4
Question 19.
Which of the following is the reciprocal of a rational number?
(a) -1
(b) 1
(c) 2
(d) Both a and b
Answer
Answer: (d) Both a and b
Question 20.
What is the sum of the additive inverse and multiplicative inverse of 2?
(a) \(\frac { 3 }{ 2 }\)
(b) \(\frac { -3 }{ 2 }\)
(c) \(\frac { 1 }{ 2 }\)
(d) \(\frac { -1 }{ 2 }\)
Answer
Answer: (b) \(\frac { -3 }{ 2 }\)
Question 21.
Which of the following statements is true?
(a) Every fraction is a rational number.
(b) Every rational number is a fraction.
(c) Every integer is a rational number.
(d) Both (a) and (c).
Answer
Answer: (d) Both (a) and (c).
Question 22.
Find the reciprocal of -2.
(a) 2
(b) -2
(c) \(\frac { -1 }{ 2 }\)
(d) None of these
Answer
Answer: (c) \(\frac { -1 }{ 2 }\)
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