This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Mathematics > Algebraic Expressions And Identities > Class 8 Maths Chapter 9 Algebraic Expressions And Identities – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 9 Algebraic Expressions And Identities Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Subtract x$^{2}$-3y$^{2}$ + 7y-8 from 9x$^{2}$-xy + y$^{2}$ + 5x-3y A) 8x$^{2}$-xy + 4y$^{2 }$+ 5x-10y + 8. B) 10x$^{2}$-xy + 4y$^{2 }$+ 5x-10y-8. C) 10x$^{2}$-xy-2y$^{2 }$+ 5x + 4y + 8. D) 8x$^{2}$-xy + 4y$^{2 }$+ 5x-10y-8. Show Answer Correct Answer: A) 8x$^{2}$-xy + 4y$^{2 }$+ 5x-10y + 8. 2. Is this 4/5 monomial? A) TRUE. B) FALSETagsTypes of Expressions. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 3. (b$^{3}$-d$^{3}$)/(b-d)$^{3}$ when b=6 and d=3 A) 9. B) 27. C) 7. D) 216. Show Answer Correct Answer: C) 7. 4. How many terms does a trinomial expression contain? A) Four. B) Three. C) Five. D) Two. Show Answer Correct Answer: B) Three. 5. What is the product of this monomial and polynomial?3xy ( 7z + 2z$^{2 }$+ x + yx) A) 3x$^{2}$y + 3x$^{2}$y$^{2 }$+ 6xyz$^{2 }$+ 21xyz TagsMultiplication of Expressions. B) 6xy$^{2}$z$^{ }$+$^{ }$21xyz + 3xy$^{2}$ + 3x$^{2}$y$^{2}$. C) 21xyz + 3x$^{2}$y + 6xy$^{2}$z$^{ }$+ 3x$^{2}$y$^{2}$. D) 3x$^{2}$y$^{2 }$+ 6xyz$^{2 }$+ 3xy$^{2}$ + 21xyz. Show Answer Correct Answer: A) 3x$^{2}$y + 3x$^{2}$y$^{2 }$+ 6xyz$^{2 }$+ 21xyz TagsMultiplication of Expressions. 6. Factorised form of 23xy-46x + 54y-108 is: A) (23 +54y)(y-2). B) NOT. C) (23 +54y)(y+2). D) (23x+54) (Y-2). Show Answer Correct Answer: D) (23x+54) (Y-2). 7. Volume of a rectangular box (cuboid) with length = 2ab, breadth = 3ac and height = 2ac is: A) 12a$^{3}$bc$^{2}$. B) 12a$^{3}$b$^{2}$c$^{2}$. C) 12a$^{3}$bc$^{3}$. D) 12a$^{3}$b$^{3}$c$^{2}$. Show Answer Correct Answer: A) 12a$^{3}$bc$^{2}$. 8. $\left(a+b\right)^2\equiv$ A) $a^2-b^2$. B) $a^2+b^2$. C) $a^2-2ab+b^2$. D) $a^2+2ab+b^2$. Show Answer Correct Answer: D) $a^2+2ab+b^2$. 9. Solve (z$^{3 }$-6)(7 + z$^{3}$) using suitable identity. A) Z $^{6} $-Z $^{3} $-42. B) Z $^{6} $+ with $^{3} $-42. C) Z $^{6} $-Z $^{3} $+42. D) Z $^{6} $+ with $^{3} $+ 42. Show Answer Correct Answer: B) Z $^{6} $+ with $^{3} $-42. 10. What is an expression that contains two terms called? A) Polynomial. B) Binomial. C) Trinomial. D) Monomial. Show Answer Correct Answer: B) Binomial. 11. What do like terms need to have the same of? A) Variables. B) Coefficients. C) Powers of variables. D) Constants. Show Answer Correct Answer: C) Powers of variables. 12. The product of (3ab-5)(4a + 3) contains ..... A) Three constant terms. B) Four constant terms. C) One constant term. D) Two constant terms. Show Answer Correct Answer: C) One constant term. 13. Product of the monomials 4p, -7q$^{3}$, -7pq A) 196p$^{2}$q$^{4}$. B) -196p$^{2}$q$^{4}$. C) 196pq $ ^ {4} $. D) 196p$^{2}$q$^{3}$. Show Answer Correct Answer: A) 196p$^{2}$q$^{4}$. 14. What do you get on subtracting (7x + 2) from (-6x + 8)? A) 11. B) -13x + 6. C) -13x + 10. D) 13x-10. Show Answer Correct Answer: B) -13x + 6. 15. The sum of 7x, 10x and 12x is A) 29x. B) 19x. C) 22x. D) 17x. Show Answer Correct Answer: A) 29x. 16. Using identities, evaluate (102)$^{2}$ A) 10404. B) 4506. C) 5900. D) 9404. Show Answer Correct Answer: A) 10404. 17. What degree does x$^{3}$-x$^{2}$y$^{2}$-8y$^{2}$+ 2 have? A) 3. B) 4. C) 7. D) 2. Show Answer Correct Answer: B) 4. 18. Factorised form of r$^{2}$-10r + 21 is: A) (r+7)(r+3). B) (r-7)(r-3). C) (r-1)(r-4). D) (r-7)(r+3). Show Answer Correct Answer: B) (r-7)(r-3). 19. Sum of 5xy-2yz-3xz, 4yz + 2x-4xz-z and-3xy + xz-2x-y is ..... A) 6xy + 5yz-2xz-z-y. B) 6xy + 5yz-9xz-2yz. C) 2xy + 2yz-9xz-yz. D) 2xy + 2yz-6xz-z-y. Show Answer Correct Answer: D) 2xy + 2yz-6xz-z-y. 20. Pqr is what type of polynomial? A) Monomial. B) Binomial. C) Trimonial. D) None of these. Show Answer Correct Answer: A) Monomial. 21. Expand (x-4)$^{2}$. A) X $^{2} $-8x+16. B) X $^{2} $-8x-16. C) X $^{2} $ +8x +16. D) X$^{2}$-16. Show Answer Correct Answer: A) X $^{2} $-8x+16. 22. Area of a rectangle with length 4ab and breadth 6b$^{2 }$is: A) 24ab$^{2}$. B) 24a$^{2}$b$^{2}$. C) 24ab$^{3}$. D) 24ab. Show Answer Correct Answer: C) 24ab$^{3}$. 23. Which of the following is the numerical coefficient of-5xy? A) -5. B) -y. C) 5. D) -x. Show Answer Correct Answer: A) -5. 24. What are terms formed as a product of? A) Numbers and symbols. B) Variables and constants. C) Functions and equations. D) Graphs and charts. Show Answer Correct Answer: B) Variables and constants. 25. A rectangle has a length say 'l' and breadth say 'b'. The length is increased and breadth is decreased by 4 units. The perimeter does not changes and so does the area of rectangle.Which among below is a relation between length and breadth? A) -l-b = 4. B) B-l = 4. C) L + b = 4. D) L-b = 4. Show Answer Correct Answer: B) B-l = 4. 26. (dx-yz + a)/(bx-ad + dy) when a=8, b=6, d=3, x=4, y=5, and z=1 A) 3. B) 7. C) -1/15. D) 1. Show Answer Correct Answer: D) 1. 27. In the expression 3xyz-8y, what is the co-efficient? A) 11. B) 1. C) 8. D) None of the aboveTagsCoefficients. Show Answer Correct Answer: D) None of the aboveTagsCoefficients. 28. The product of 5x and 3y is: A) Xy. B) 2xy. C) 5xy. D) 15xy. Show Answer Correct Answer: D) 15xy. 29. Which of the following expression is equivalent to the expression (y-x + 3) (y + x-3)? A) And $^{2} $-(x-3) $^{2} $. B) (y-x) $^{2} $-9. C) X $^{2} $-(Y+ 3). D) (x+y) $^{2} $-9. Show Answer Correct Answer: A) And $^{2} $-(x-3) $^{2} $. 30. A$^{2}$-b$^{2}$ is a product of A) (a+b)(a-b). B) (a+b)(a+b). C) (a-b)(a-b). D) None of these. Show Answer Correct Answer: A) (a+b)(a-b). 31. X$^{2}$-(x-y)$^{2 }$* y If x =-5 and y =-8 A) 1377. B) 97. C) -128. D) -47. Show Answer Correct Answer: B) 97. 32. What do terms themselves form as a product of? A) Functions and equations. B) Graphs and charts. C) Numbers and symbols. D) Variables and constants. Show Answer Correct Answer: D) Variables and constants. 33. Find 87$^{2}$-13$^{2}$ A) 7200. B) 7300. C) 7400. D) 7500TagsApplication of Identities. Show Answer Correct Answer: C) 7400. 34. If we subtract 3x + 7y from-3x-7y, then we get ..... A) 6x + 14y. B) 0. C) -6x-14y. D) 6x-14y. Show Answer Correct Answer: C) -6x-14y. 35. 2 less than the quotient of d and 6 A) D-6 + 2. B) 2-d/6TagsLanguage of Algebra. C) 6d-2. D) D/6-2. Show Answer Correct Answer: D) D/6-2. 36. Can the following expression be a monomial (xyz + a) where 'a' is any whole number A) For a =-1. B) For a = 0. C) Not possible. D) For a = 1. Show Answer Correct Answer: B) For a = 0. 37. Match this word expression with the correct algebraic expression:a number decreased by 9 A) Sun. B) N + 9. C) N-9. D) N/9. Show Answer Correct Answer: C) N-9. 38. What does the (E) in PEMDAS mean? A) Examples. B) Evidence. C) Experience. D) Exponents. Show Answer Correct Answer: D) Exponents. 39. What is an expression that contains only one term called? A) Polynomial. B) Trinomial. C) Monomial. D) Binomial. Show Answer Correct Answer: C) Monomial. 40. The product of 4x and 0 is: A) Hh. B) 4. C) 0. D) None of the above. Show Answer Correct Answer: C) 0. 41. Simplify the Expression-x$^{2}$+2-1+6x$^{2}$-4x$^{2}$ A) X $^{2}$+3. B) X$^{2}$ +1. C) X $^{2}$-1. D) ZKS $^{2} $ +1. Show Answer Correct Answer: B) X$^{2}$ +1. 42. Evaluate:-x(y-x) + (3x-y) when x =-2 and y = 5 A) -5. B) -25. C) 3. D) -17. Show Answer Correct Answer: C) 3. 43. A ..... is the numerical term in an algebraic expression. A) Constant. B) CoefficientTagsConstants. C) Term. D) Variable. Show Answer Correct Answer: A) Constant. 44. The coefficient of y in the term of-y$^{3 }$is: A) -1. B) 1$^{3}$. C) -1$^{3}$. D) -3. Show Answer Correct Answer: A) -1. 45. Solve (y$^{4 }$-5)(7-y$^{4}$) using suitable identity A) And $^{8} $+ 12y $^{4} $-35. B) And $^{8} $-12y $^{4} $+ 35. C) Y$^{8 }$+ 2y$^{4 }$-35. D) Y$^{8 }$-2y$^{4 }$-35. Show Answer Correct Answer: C) Y$^{8 }$+ 2y$^{4 }$-35. 46. Which expression is equivalent to3x + 1/2(-12x-16) A) -21x + (-32). B) YAH + 8. C) -Sh-8 Tagsimpli. D) -Sx-8. Show Answer Correct Answer: D) -Sx-8. 47. 17 less than the product of 3 and m A) 17-Uncle. B) 17-3 + m. C) 17m-3. D) Uncle-17. Show Answer Correct Answer: D) Uncle-17. 48. Which expression matches:The sum of 6 and 5 doubled A) 2 x 6 + 5. B) 2 x (6 + 5). C) 6 + (5 x 2). D) None of the above. Show Answer Correct Answer: B) 2 x (6 + 5). 49. If we multiply 5x and (-4xyz), then we get: A) -20x $^{2} $ yz. B) -2xyz. C) X$^{2}$yz. D) 20x $^{2} $ yz. Show Answer Correct Answer: A) -20x $^{2} $ yz. 50. If ab-bc is added to bc-ca, then the result will be ..... A) Ab-bc-ca. B) Abc-ac. C) Now-of. D) 0. Show Answer Correct Answer: C) Now-of. 51. A number increased by 9 A) Sun. B) N/9. C) N-9. D) N + 9. Show Answer Correct Answer: D) N + 9. 52. The product of 7x and 3y is A) 3xy. B) 10xy. C) 21xy. D) Wise. Show Answer Correct Answer: C) 21xy. 53. The expression x + 3 is in A) Three variables. B) None of these. C) Two variables. D) One variable. Show Answer Correct Answer: D) One variable. 54. A ..... is the numerical factor of a variable term in an algebraic expression. A) Term. B) ConstantTagsCoefficients. C) Variable. D) Coefficient. Show Answer Correct Answer: D) Coefficient. 55. What is the value of 5x$^{25}$-3x$^{32}$ + 2x$^{-12}$ at x=1? A) 0. B) 2. C) 4. D) None of these. Show Answer Correct Answer: C) 4. 56. (3a-2x)/(3x-a) when a=8 and x=4 A) 4. B) -6. C) -1 1/3. D) 18. Show Answer Correct Answer: A) 4. 57. Square of 3x-4y is: A) 9x$^{2}$+16y$^{2}$-24xy. B) 9x$^{2}$+16y$^{2}$-4xy. C) 9x$^{2}$+16y$^{2+}$24xy. D) NOT. Show Answer Correct Answer: A) 9x$^{2}$+16y$^{2}$-24xy. 58. If we subtract 4a-7ab + 3b + 12 from 12a-9ab + 5b-3, then the answer is: A) Za+Aug+2B-15. B) Za+father+father +15. C) Oblig. D) 8 a-2-2 b-15. Show Answer Correct Answer: C) Oblig. 59. On dividing p(4p$^{2}$-16) by 4p (p-2), we get A) 2p+4. B) P-2. C) P+2. D) 2P-4. Show Answer Correct Answer: C) P+2. 60. The algebraic expression 3x+2y+6 is a: A) Monomial. B) Binomial. C) Trinomial. D) None of the above. Show Answer Correct Answer: C) Trinomial. Next →Related QuizzesMathematics QuizzesClass 8 QuizzesClass 8 Maths Chapter 9 Algebraic Expressions And Identities Quiz 2 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books