This quiz works best with JavaScript enabled. Home > Grammar > Discourse > Substitution – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Substitution Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Y = x + 4 x = 2y =? A) 5. B) 6. C) 7. D) 8. Show Answer Correct Answer: B) 6. 2. Which carbocation is the least stable? A) Methyl. B) Primary. C) Secondary. D) Tertiary. Show Answer Correct Answer: A) Methyl. 3. Electron-donating A) The reactive electrophile in Friedel-Crafts acylation reactions. B) The electrophile in aromatic nitration. C) Groups which activate aromatic rings towards electrophilic substitution. D) Groups which activate aromatic rings towards nucleophilic substitution. E) Source of F$^{+}$ in fluorination reactions. Show Answer Correct Answer: C) Groups which activate aromatic rings towards electrophilic substitution. 4. What is the solution to the following system?$^{y = 2x }$$^{x + y = 9}$ A) (3, 6). B) (2, 9). C) (6, 3). D) No solutions. Show Answer Correct Answer: A) (3, 6). 5. What is the first step to solving this system of equations by substitution? y=8x+1 y=6x+3 A) Y = 6(8x + 1). B) -8x-1 = 6x + 3. C) X = 8(6x + 3). D) 8x + 1 = 6x + 3. Show Answer Correct Answer: D) 8x + 1 = 6x + 3. 6. Solve the system of linear equations using substitution. $\frac{1}{2}x+\frac{1}{4}y=2$ $x+y=-1$ A) (7, -6). B) (7, 6). C) (7, 0). D) (-7, -1). Show Answer Correct Answer: A) (7, -6). 7. The product of 34 and z A) 34/z. B) Z/34. C) Z X 34. D) 34-z. Show Answer Correct Answer: C) Z X 34. 8. Given the expression "4 more than 3 times b" and b = 7, what is the value? A) 25. B) 41. C) 15. D) 28. Show Answer Correct Answer: A) 25. 9. In the sentence 'She likes coffee, and so do I', what does 'do' substitute? A) Likes. B) Coffee. C) She. D) I. Show Answer Correct Answer: A) Likes. 10. Science of bodily structures A) Anatomy. B) Antony. C) Antomy. D) None of the above. Show Answer Correct Answer: A) Anatomy. 11. Solve:56 = 4(3n + 2) A) 2. B) 4. C) All real numbers. D) -3. Show Answer Correct Answer: B) 4. 12. What is the collective noun for a group of camels? A) Den. B) Clutch. C) Float. D) Caravan. Show Answer Correct Answer: D) Caravan. 13. If $c=5$ $2c$ A) 7. B) 8. C) 9. D) 10. Show Answer Correct Answer: D) 10. 14. What is the solution to the following system?$^{y = 3x}$$^{12x-4y = 20}$ A) (0, 0). B) No solutions. C) (0, 20). D) Infinite solutions. Show Answer Correct Answer: B) No solutions. 15. In Algebra, substitution means, A) Replace letters in an expression with numbers. B) Replace letters in an expression or equation with numbers. C) Replace letters in an equation with numbers. D) None of the above. Show Answer Correct Answer: B) Replace letters in an expression or equation with numbers. 16. If a = 4 & b = 6, what is 3a + 5b? A) 40. B) 42. C) 44. D) 46. Show Answer Correct Answer: B) 42. 17. Find the value of this expression if c = 414 + 3c$^{2 }$$^{}$-15 + c A) 37. B) 51. C) 41. D) 121. Show Answer Correct Answer: B) 51. 18. If $y=4$ $2y+3$ A) 27. B) 11. C) 12. D) 9. Show Answer Correct Answer: B) 11. 19. One equation is already isolated. Which choice shows the correct substitution?2x-3y =-1y = x-1 A) 2x-3(x-1) =-1. B) 2(x-1)-3y =-1. C) 2x-3y = x-1. D) Y = 2x-3y. Show Answer Correct Answer: A) 2x-3(x-1) =-1. 20. "You can eat 6 animal crackers per minute. There are 200 animal crackers in the jar when you started eating."Write a function to represent the number of animal crackers left in the jar after x minutes. A) F(x) =-6x + 200. B) F(x) = 6x + 200. C) F(x) = 200x + 6. D) F(x) =-200x + 6. Show Answer Correct Answer: A) F(x) =-6x + 200. 21. Use the substitution method to find a solution for these two systems.y=-3x-7y= x+9 A) (-5, 4). B) (4, 13). C) (5, -4). D) (-4, 5). Show Answer Correct Answer: D) (-4, 5). 22. That cannot be avoided or prevented A) Impossible. B) Inevitable. C) Avoidable. D) Evitable. Show Answer Correct Answer: B) Inevitable. 23. What is the solution to this system of equation? $x=7-2y$ $2x+y=5$ A) $\left(-1, 4\right)$. B) $\left(4, -1\right)$. C) $\left(1, 3\right)$. D) $\left(3, 1\right)$. Show Answer Correct Answer: C) $\left(1, 3\right)$. 24. Something no longer in use A) Obsolete. B) Obssolete. C) Obesolete. D) None of the above. Show Answer Correct Answer: A) Obsolete. 25. Evaluate g + f when g=-8 and f= 2. A) 10. B) 6. C) -10. D) -6. Show Answer Correct Answer: D) -6. ← PreviousNext →Related QuizzesGrammar QuizzesSubstitution Quiz 1Substitution Quiz 2Substitution Quiz 3Substitution Quiz 4Substitution Quiz 5Substitution Quiz 6Substitution Quiz 7Substitution Quiz 8Substitution Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books