This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Discourse > Substitution – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Substitution Quiz 20 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Solve the following systems of equations using substitution:x = 6y = 2x-3 A) (9, 6). B) (6, 6). C) (9, 9). D) (6, 9). Show Answer Correct Answer: D) (6, 9). 2. Solve the system of equations by substitution. $x+y=44$ $y=10x$ A) (-4, 40). B) (4, 40). C) (40, 4). D) (-40, 4). Show Answer Correct Answer: B) (4, 40). 3. Choose correct 'u' for u-substitution method:$\int\left(\frac{2x+1}{x^2+x-2}\right)dx$ A) Let $u=2x+1$. B) Let $u=dx$. C) Let $u=x^2+x-2$. D) Let $u=x^2$. Show Answer Correct Answer: C) Let $u=x^2+x-2$. 4. What is acylation? A) Substitution of one of the hydrogen atoms of a benzene ring by an acyl group from an acyl chloride. B) Addition to the benzene ring of an alkyl group from a halogenoalkane. C) Addition to the benzene ring of an acyl group from an acyl chloride. D) None of the above. Show Answer Correct Answer: C) Addition to the benzene ring of an acyl group from an acyl chloride. 5. What is the solution to this system?y = 2x + 1y = 4x-1 A) (1, 3). B) (3, 1). C) (-1, -3). D) (-1, 3). Show Answer Correct Answer: A) (1, 3). 6. How can nucleophiles be formed? A) Homolytic fission. B) Heterolytic fission. C) All the above. D) None of the above. Show Answer Correct Answer: B) Heterolytic fission. 7. Prehistory is divided into three periods. In order, they are ..... A) Metal Ages, Neolithic, Paleolithic. B) Metal Ages, Paleolithic, Neolithic. C) Paleolithic, Neolithic, Metal Ages. D) Neolithic, Paleolithic, Metal Ages. Show Answer Correct Answer: C) Paleolithic, Neolithic, Metal Ages. 8. Solve each equation:65 = 13b A) 5. B) 845. C) 52. D) None of those. Show Answer Correct Answer: A) 5. 9. If p = 3 and q = 5, find p + q + 2 A) 12. B) 8. C) 11. D) 10. Show Answer Correct Answer: D) 10. 10. Use substitution to evaluate the integral $\int\\frac{dx}{x\ln x}$ A) $\frac{\ln x}{x^2}+C$. B) $\frac{1}{x^2}+C$. C) $\ln\left(\ln x\right)+C$. D) $\left(\ln x\right)^2+C$. Show Answer Correct Answer: C) $\ln\left(\ln x\right)+C$. 11. Which answer choice substituted correctly? x = 3y-172x + 3y =-7 A) $2x+3y-17=-7$. B) $2x+3y=3y-17$. C) $2(3y-17)+3y=-7$. D) $2x+3(3y-17)=-7$. Show Answer Correct Answer: C) $2(3y-17)+3y=-7$. 12. Which method would be best (quickest) for solving the system below:x + y = 113x-4y =-2 A) Substitution. B) Elimination. C) Graphing. D) None of these. Show Answer Correct Answer: B) Elimination. 13. Solve the system by substitution.-3x + 3y = 4x = y + 3 A) No Solution. B) Infinite Solutions. C) (4, 1). D) (10, 7). Show Answer Correct Answer: A) No Solution. 14. X = 4y = x + 8What is the solution? A) (-4, -4). B) (4, 4). C) (4, 12). D) (12, 4). Show Answer Correct Answer: C) (4, 12). 15. Y = x + 20y = 6x A) 26, 0. B) -4, 21. C) 4, 24. D) 0, 24. Show Answer Correct Answer: C) 4, 24. 16. Which answer has a correct first step for this system:3x + 3y = 3y = 3x + 5 A) The variable is already isolated, so we've already solved the system. B) The variable is already isolated for y, so we substitute it in the first equation and solve for x3x + 3(3x + 5) = 3. C) Free sha vaca doo. D) The variable is already isolated for y, so we substitute it in the second equation and solve for xy = 3(3x + 3y) = 3. Show Answer Correct Answer: B) The variable is already isolated for y, so we substitute it in the first equation and solve for x3x + 3(3x + 5) = 3. 17. How could I easily rewrite this equationy = 4x-5 y= 2x + 3 A) 2y = 6x-2. B) 4x-5=2x+3. C) 4x-5 + 2x + 3 = y. D) None of the above. Show Answer Correct Answer: B) 4x-5=2x+3. 18. Which is deactivating group? A) OH. B) CHO. C) OCH3. D) CH3. Show Answer Correct Answer: B) CHO. 19. Which equation is correctly using substitution for the system shown?y = x + 6y =-2x-3 A) X + 6 =-2x-3. B) Y = x + 6-2x-3. C) All the above. D) None of the above. Show Answer Correct Answer: A) X + 6 =-2x-3. 20. What is done to make sure that no mixture of products formed between reaction of ammonia and halogenoalkanes? A) Usage of reflux. B) Usage of ethanol. C) Usage of excess ammonia. D) None of the above. Show Answer Correct Answer: C) Usage of excess ammonia. 21. What does the word 'one' substitute in the sentence 'I want the red apple, not the green one'? A) Green. B) Red. C) Want. D) Apple. Show Answer Correct Answer: D) Apple. 22. Let x = 4 and y = 7, Calculate x + 2y A) 15. B) 18. C) 4 + 14y. D) X + 14. Show Answer Correct Answer: B) 18. 23. X = y-24x + y = 2 A) (-2, 0). B) (0, 2). C) (2, 0). D) (0, -2). Show Answer Correct Answer: B) (0, 2). 24. What is the solution to the following system?$^{x-y = 6}$$^{x = 11}$ A) (11, 11). B) (5, 55). C) (11, 5). D) (55, 5). Show Answer Correct Answer: C) (11, 5). 25. Two students used substitution to solve the following system of equations:$y=x-8$ $5x+2y=19$ $5\left(x-8\right)+2y=19$ $5x+2\left(x-8\right)=19.$ A) Student A. B) Student B. C) Neither student substituted correctly. D) None of the above. Show Answer Correct Answer: B) Student B. 26. Solve by Substitution:y = 8x and x + y =-9 A) (8, -9). B) (64, 8). C) (-1, -8). D) None of the above. Show Answer Correct Answer: C) (-1, -8). 27. Solve by substitution7x+2y=-19x=2y-21 A) (8, 5). B) (-5, 8). C) (-37, 8). D) (6.5, -8). Show Answer Correct Answer: B) (-5, 8). 28. All of the y values or outputs are called what? A) Domain. B) Relation. C) Function. D) Range. Show Answer Correct Answer: D) Range. 29. X =-3y-8x-2y =-3 A) (-5, -1). B) (1, -5). C) (5, -1). D) (-5, 1). Show Answer Correct Answer: A) (-5, -1). 30. Which of the following act as catalysis in the nitration of benzene? A) Dil. HCl. B) Conc. HCl. C) Conc. H$_{2}$SO$_{4}$. D) Dil. H$_{2}$SO$_{4}$. Show Answer Correct Answer: C) Conc. H$_{2}$SO$_{4}$. ← PreviousNext →Related QuizzesGrammar QuizzesEnglish Grammar QuizzesSubstitution Quiz 1Substitution Quiz 2Substitution Quiz 3Substitution Quiz 4Substitution Quiz 5Substitution Quiz 6Substitution Quiz 7Substitution Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books