We have compiled the NCERT MCQ Questions for Class 8 Maths Chapter 1 Rational Numbers with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 8 Maths with Answers on a daily basis and score well in exams. Refer to the Rational Numbers Class 8 MCQs Questions with Answers here along with a detailed explanation.
Rational Numbers Class 8 MCQs Questions with Answers
Choose the correct option.
Question 1.
What should be subtracted from \(\frac {-3}{4}\) to get -4?
(a) \(\frac {13}{4}\)
(b) \(\frac {-13}{4}\)
(c) 13
(d) \(\frac {4}{13}\)
Answer
Answer: (a) \(\frac {13}{4}\)
Question 2.
Which of the following statements is true?
(a) Natural numbers are closed under division.
(b) Whole numbers are not closed under division.
(c) Integers are closed under division.
(d) Rational numbers are closed under division.
Answer
Answer: (c) Integers are closed under division.
Question 3.
Which of the following statements is true?
(a) Natural numbers are associative for division.
(b) Whole numbers are associative for division.
(c) Integers are associative for division.
(d) Rational numbers are not associative for division.
Answer
Answer: (d) Rational numbers are not associative for division.
Question 4.
‘0’ is not _____
(a) a natural number.
(b) a whole number.
(c) an integer.
(d) a rational number
Answer
Answer: (a) a natural number.
Question 5.
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 6.
The additive identity for rational numbers is
(a) 1
(b) -1
(c) 0
(d) None of these
Answer
Answer: (c) 0
Question 7.
The additive inverse of \(\frac {7}{11}\) is
(a) \(\frac {7}{11}\)
(b) \(\frac {11}{7}\)
(c) \(\frac {-11}{7}\)
(d) 1
Answer
Answer: (c) \(\frac {-11}{7}\)
Question 8.
The multiplicative inverse of \(\frac {-3}{5}\) is
(a) \(\frac {-3}{5}\)
(b) \(\frac {-5}{3}\)
(c) \(\frac {5}{3}\)
(d) \(\frac {-7}{11}\)
Answer
Answer: (b) \(\frac {-5}{3}\)
Question 9.
The rational number that does not have a reciprocal is
(a) 0
(b) 1
(c) -1
(d) \(\frac {1}{2}\)
Answer
Answer: (a) 0
Question 10.
Which of the following is the product of (\(\frac {-7}{8}\)) and (\(\frac {2}{21}\))
(a) 12
(b) \(\frac {-63}{16}\)
(c) \(\frac {-16}{147}\)
(d) \(\frac {-1}{12}\)
Answer
Answer: (d) \(\frac {-1}{12}\)
Question 11.
What should be added to \(\frac {-3}{4}\) to get -1?
(a) \(\frac {1}{4}\)
(b) –\(\frac {1}{4}\)
(c) 1
(d) –\(\frac {3}{4}\)
Answer
Answer: (b) –\(\frac {1}{4}\)
Question 12.
What should be subtracted to \(\frac {-3}{4}\) to get -1?
(a) \(\frac {1}{4}\)
(b) –\(\frac {1}{4}\)
(c) 1
(d) –\(\frac {3}{4}\)
Answer
Answer: (a) \(\frac {1}{4}\)
Fill in the blanks
Question 1.
The multiplicative inverse of a number is also called its ………………
Answer
Answer: Reciprocal
Question 2.
The additive inverse of –\(\frac {3}{4}\) is ………………..
Answer
Answer: 0
Question 3.
The negative of a rational number is called its ……………..
Answer
Answer: additive inverse
Question 4.
The sum of \(\frac {-1}{7}\) and \(\frac {-1}{7}\) is ………………..
Answer
Answer: \(\frac {-2}{7}\)
Question 5.
The product of \(\frac {-27}{81}\) and \(\frac {-81}{27}\) is ……………
Answer
Answer: 1
Question 6.
The rational number equivalent to 3 is …………………..
Answer
Answer: \(\frac {6}{2}\)
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