This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Kp is affected by: A) Concentration and pressure. B) Temperature only. C) The position of equilibrium. D) Adding a catalyst. Show Answer Correct Answer: B) Temperature only. 2. In a well-insulated house on a hot summer day, what happens to the thermal energy inside the house? A) It escapes to the outside. B) It stays in the same place without moving. C) It moves from cooler rooms to warmer rooms. D) It moves from warmer rooms to cooler rooms until equilibrium is reached. Show Answer Correct Answer: D) It moves from warmer rooms to cooler rooms until equilibrium is reached. 3. A substance that increases the rate of a reaction without being used up during the reaction is called a A) Catalyst. B) Product. C) Reactant. D) Solute. Show Answer Correct Answer: A) Catalyst. 4. A substance which speeds up the rate of a chemical reaction but which is not consumed in the reaction is known as what type of material? A) An equilibrium constant. B) An activated complex. C) A reactant. D) A catalyst. Show Answer Correct Answer: D) A catalyst. 5. During equilibrium, the amount of the products and the amount of the reactants are ..... A) Equal. B) Constant (unchanging). C) Constantly increasing. D) Constantly decreasing. Show Answer Correct Answer: B) Constant (unchanging). 6. Second law of Gossen A) The second law of Gossen is related to supply and demand. B) The second law of Gossen is the law of diminishing marginal utility. C) The second law of Gossen defines the concept of total utility. D) The second law of Gossen states that utility increases with consumption. Show Answer Correct Answer: B) The second law of Gossen is the law of diminishing marginal utility. 7. In a chemical equilibrium, what happens to the position of equilibrium if the concentration of a reactant is increased? A) Shifts to the right. B) Shifts to the left. C) Remains unchanged. D) Equilibrium is destroyed. Show Answer Correct Answer: A) Shifts to the right. 8. What is the formula for calculating marginal utility? A) Marginal Utility = $\Delta$TU / $\Delta$Q. B) Marginal Utility = $\Delta$Q / $\Delta$TU. C) Marginal Utility = TU / Q. D) Marginal Utility = Total Utility-Average Utility. Show Answer Correct Answer: A) Marginal Utility = $\Delta$TU / $\Delta$Q. 9. A large value for the specific rate constant (k) means the reaction is A) Occurs over several steps. B) Relatively fast. C) Relatively slow. D) Incomplete. Show Answer Correct Answer: B) Relatively fast. 10. The K$_{sp}$ value for aluminum hydroxide is very small at 3.0 x 10$^{-34 }$at 25 $^\circ$C. From this we can conclude which statement below is most likely to be true of aluminum hydroxide. A) Aluminum hydroxide will be only very slightly soluble in water. B) Aluminum hydroxide will easily decompose into aluminum, hydrogen and oxygen. C) Aluminum hydroxide will be a gas at room temperature. D) Aluminum hydroxide will be very chemically unstable. Show Answer Correct Answer: A) Aluminum hydroxide will be only very slightly soluble in water. 11. Which of the following statements is not correct regarding equilibrium? A) Equilibrium is achieved when the product and reactant concentrations are the same. B) Equilibrium is achieved when the concentrations of all reactants is constant. C) Equilibrium is achieved when the forward and reverse reactions are equal. D) Equilibrium is achieved when the ratio of products to reactants is constant. Show Answer Correct Answer: A) Equilibrium is achieved when the product and reactant concentrations are the same. 12. The rate at which TU change in indicated by A) MU. B) TU. C) Both option 1&2. D) None of the above. Show Answer Correct Answer: A) MU. 13. In the reaction @@CO(g) + 2H ..... 2(g) ightleftharpoons CH ..... 3OH(g) $, the equilibrium constant $ $ is 14.5 at 500 K. If the initial concentrations are $ $, $ $, and $ $, what is the equilibrium concentration of $ A) 0.05 M. B) 0.10 M. C) 0.15 M. D) 0.20 M. Show Answer Correct Answer: B) 0.10 M. 14. Cardinal approach is A) Utility approach. B) IC approach. C) All the above. D) None of the above. Show Answer Correct Answer: A) Utility approach. 15. A person mixes 100.0 mL of 0.0015M CaCl$_{2}$ and 50.0 mL of 0.0081M K$_{2}$SO$_{4}$. If the K$_{sp}$ for CaSO$_{4}$ is 2.4 x 10$^{-5 }$, will a CaSO$_{4 }$precipitate be observed? A) No precipitate occur. B) Precipitate occur. C) All the above. D) None of the above. Show Answer Correct Answer: A) No precipitate occur. 16. If in the chemical change:A(aq) + B(aq) $\rightarrow$ C (aq), and more A is added, then what happens? A) The Kc or Keq for this aqueous reaction stays the same. B) The Kc or Keq for this aqueous reaction changes. C) This aqueous reaction shifts "to the right" toward products. D) This aqueous reaction shifts "to the left" toward reactants. Show Answer Correct Answer: C) This aqueous reaction shifts "to the right" toward products. 17. Which of the following have no impact on output in the short run A) Price of Raw Materials. B) Employment. C) Technology. D) Capital Employed. Show Answer Correct Answer: C) Technology. 18. If you heat one end of a metal rod, how does the thermal energy move through the rod to reach thermal equilibrium? A) Through radiation only. B) Through convection only. C) Through conduction only. D) Through a combination of conduction and convection. Show Answer Correct Answer: D) Through a combination of conduction and convection. 19. Forward reaction is A) Reactants to products (left to right). B) Products to reactants (right to left). C) Always reversible. D) Always endothermic. Show Answer Correct Answer: A) Reactants to products (left to right). 20. Gradualism occurs when geologic and climatic conditions are ..... A) Stable. B) Unstable. C) Long. D) Short. Show Answer Correct Answer: A) Stable. 21. What is the conjugate base of HCO$_{3}$$^{-}$? A) HCO$_{3}$$^{-}$. B) H$_{2}$CO$_{3}$$^{-}$. C) H$_{2}$CO$_{3}$. D) CO$_{3}$$^{2-}$. Show Answer Correct Answer: D) CO$_{3}$$^{2-}$. 22. Which of the following is not an assumption required for Hardy-Weinberg equilibrium? A) Random mating. B) No mutations. C) Population size must fluctate. D) No selection is occuring. Show Answer Correct Answer: C) Population size must fluctate. 23. Why is equilibrium called a dynamic state? A) Chemists try to convert as much reactants as possible into products. B) The reactions at equilibrium continue to take place once equilibrium is established. C) The products of a forward reaction are favored, so equilibrium lies to the right. D) All chemical reactions are considered to be reversible under suitable conditions. Show Answer Correct Answer: B) The reactions at equilibrium continue to take place once equilibrium is established. 24. P$^{H }$of 10$^{-8}$M NaOH solution is A) 8. B) 6.8. C) 7. D) 4. Show Answer Correct Answer: B) 6.8. 25. In the reaction @@ext\{N\} ..... 2(g) + 3ext\{H\} ..... 2(g) ightleftharpoons 2ext\{NH\} ..... 3(g)@@, what will happen to the position of equilibrium if the pressure is increased? A) It will shift to the right, favoring the formation of $\text{NH}_3$. B) It will shift to the left, favoring the formation of $\text{N}_2$ $\text{H}_2$. C) It will not change. D) It will depend on the temperature. Show Answer Correct Answer: A) It will shift to the right, favoring the formation of $\text{NH}_3$. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 1Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 2Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 3Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 4Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 5Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 6Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 7Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 8Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 9Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books