This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 1 Rational Numbers ā Quiz 1 š Homepage š Download PDF Books š Premium PDF Books Class 8 Maths Chapter 1 Rational Numbers Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The additive inverse of a/b is A) -b/a. B) B/a. C) A/b. D) -a/b. Show Answer Correct Answer: D) -a/b. 2. Which rational number are their own reciprocal? A) 1 and 0. B) 1 and (-1). C) (-1) and 0. D) Only 1. Show Answer Correct Answer: B) 1 and (-1). 3. $\frac{1}{2}\times\left(\frac{1}{2}+\frac{1}{4}\right)$ A) $\frac{2}{4}$. B) $\frac{3}{8}$. C) $\frac{1}{4}$. D) $\frac{3}{4}$. Show Answer Correct Answer: B) $\frac{3}{8}$. 4. For any rational number p/q, what cannot be zero? A) P. B) Q. C) P and q both. D) P and q both can be zero. Show Answer Correct Answer: B) Q. 5. Reciprocal of-7 is ..... A) 7. B) $\frac{1}{7}$. C) $\frac{1}{-7}$. D) -7. Show Answer Correct Answer: C) $\frac{1}{-7}$. 6. How many rational numbers can be plotted between 1 and 2 on the number line? A) 2. B) 5. C) Infinite. D) 10. Show Answer Correct Answer: C) Infinite. 7. Fill in the blank with the correct sign >, <, or = 3/4 ..... 4/5 A) >. B) <. C) =. D) None of the above. Show Answer Correct Answer: B) <. 8. Multiplication is commutative on rational numbers. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. $\frac{-4}{5}$ A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. The reciprocal of positive rational number is ..... A) Zero. B) Negative rational number. C) Positive rational number. D) None of the above. Show Answer Correct Answer: C) Positive rational number. 11. What is the sum?$^{4}$/$_{5}$ + $^{1}$/$_{5}$ A) 1. B) 1/2. C) 2/10. D) 5/10. Show Answer Correct Answer: A) 1. 12. Identify the constant term:4x$^{3}$ + 2x-9 A) 4. B) -2. C) -9. D) 9. Show Answer Correct Answer: C) -9. 13. What is the multiplicative inverse of $\frac{-6}{11}$ A) $\frac{6}{11}$. B) $\frac{-6}{-11}$. C) $\frac{11}{-6}$. D) $\frac{6}{-11}$. Show Answer Correct Answer: C) $\frac{11}{-6}$. 14. What is the additive identity for rational numbers? A) 1. B) -1. C) 0. D) 10. Show Answer Correct Answer: C) 0. 15. The multiplicative inverse of which rational number does not exist? A) 0. B) 1. C) (-1). D) None of the following. Show Answer Correct Answer: A) 0. 16. For a number of p/q form(p, q are integers) to be a rational number, the DENOMINATOR A) Should be 0. B) Should never be 0. C) All the above. D) None of the above. Show Answer Correct Answer: B) Should never be 0. 17. Is considered a ..... decimal A) Repeating. B) Terminating. C) All the above. D) None of the above. Show Answer Correct Answer: A) Repeating. 18. Add the following polynomials:(6x + 4x$^{4}$-3x$^{2}$) + (7x$^{4}$ + 5x$^{2}$ + 8x) A) 11x$^{4}$ + 2x$^{2}$ + 14x. B) 16x$^{4}$ + x$^{2}$ + 14x. C) 11x$^{4}$ + x$^{2}$ + 14x. D) 11x$^{4}$ + 2x$^{2}$ + 10x. Show Answer Correct Answer: A) 11x$^{4}$ + 2x$^{2}$ + 14x. 19. What is the additive inverse of $\frac{3}{4}$ A) $\frac{4}{3}$. B) $\frac{-3}{4}$. C) $\frac{-4}{3}$. D) $\frac{-3}{-4}$. Show Answer Correct Answer: B) $\frac{-3}{4}$. 20. All integers are rational numbers A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Fill in the blank with the correct sign:<, >, or =.-|4| ..... -(-4) A) <. B) >. C) =. D) None of the above. Show Answer Correct Answer: A) <. 22. Which of the following rational numbers is equal to 0.6? A) $\frac{3}{5}$. B) $\frac{6}{100}$. C) $\frac{10}{6}$. D) 0.6 is not a rational number. Show Answer Correct Answer: A) $\frac{3}{5}$. 23. $\frac{-18}{27}$ $\frac{10}{-15}$ A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Between Which two numbers will-8/3 lie on the number line? A) 0 and-1. B) -1 and-2. C) -2 and-3. D) -7 and-8. Show Answer Correct Answer: C) -2 and-3. 25. How many terms does this expression have:-27a$^{3}$ + 9a$^{2}$-45a A) What are terms?. B) 0 terms. C) -45 terms. D) 3 terms. Show Answer Correct Answer: D) 3 terms. 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