This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A decrease in carbon shifts the reaction A) Left (towards reactants). B) Right (towards products). C) Does not affect equilibrium. D) None of the above. Show Answer Correct Answer: A) Left (towards reactants). 2. What would be the effect of increasing the temperature to the equilibrium of an exothermic reaction? A) Equilibrium shifts to the left. B) Equilibrium shifts to the right. C) No change in position of equilibrium. D) None of the above. Show Answer Correct Answer: A) Equilibrium shifts to the left. 3. MPC and multiplier have a ..... relationship A) Direct. B) Indirect. C) Constant. D) None of the above. Show Answer Correct Answer: A) Direct. 4. The buffer solution is able to maintain pH by some events, except ..... A) The addition of a little acid. B) The addition of a little base. C) Dilution. D) Addition of water. E) The addition of excess acid. Show Answer Correct Answer: E) The addition of excess acid. 5. Which statement describes this reaction at equilibrium? A) The concentration of N$_{2}$O$_{4}$(g) must equal the concentration of NO$_{2}$(g). B) The concentration of N$_{2}$O$_{4}$(g) and the concentration of NO$_{2}$(g) must be constant. C) The rate of the forward reaction is greater than the rate of the reverse reaction. D) The rate of the reverse reaction is greater than the rate of the forward reaction. Show Answer Correct Answer: B) The concentration of N$_{2}$O$_{4}$(g) and the concentration of NO$_{2}$(g) must be constant. 6. What happens when there is excess demand-that is quantity demanded is greater than quantity supplied? A) Market Surplus. B) Market Shortage. C) Market Equilibrium. D) None of the above. Show Answer Correct Answer: B) Market Shortage. 7. The turning effect of a force on a door is greater when it is applied at A) A point near the hinges and perpendicular to the door. B) A point near the hinges and parallel to the door. C) A point far away from the hinges and perpendicular to the door. D) A point far away from the hinges and parallel to the door. Show Answer Correct Answer: C) A point far away from the hinges and perpendicular to the door. 8. What does the M after a concentration value stand for? A) Meters. B) Music. C) Mass. D) Moles. Show Answer Correct Answer: D) Moles. 9. Which factors play a role in determining whether a chemical reaction will proceed spontaneously or not? A) Entropy, temperature, and solubility. B) Entropy, enthalpy, and temperature. C) Entropy, solubility, and enthalpy. D) Temperature, solubility, and density. Show Answer Correct Answer: B) Entropy, enthalpy, and temperature. 10. What is the condition required for chemical equilibrium to be achieved? A) The concentrations of reactants and products must be equal. B) The forward reaction rate must be faster than the reverse reaction rate. C) The rates of the forward and reverse reactions must be equal. D) The temperature must be constant throughout the reaction. Show Answer Correct Answer: C) The rates of the forward and reverse reactions must be equal. 11. What is the effect of pressure on the solubility of gases in liquids? A) Pressure has no effect on solubility. B) Solubility decreases with increasing pressure. C) Solubility increases with increasing pressure. D) Solubility first decreases then increases with pressure. Show Answer Correct Answer: C) Solubility increases with increasing pressure. 12. The correct mathematical expression for finding the molar solubility (X) of Sn(OH)$_{2}$ is: A) 2(X)$^{3}$ = Ksp. B) 108(X)$^{5}$ = Ksp. C) 4(X)$^{3}$ = Ksp. D) 8(X)$^{3}$ = Ksp. Show Answer Correct Answer: C) 4(X)$^{3}$ = Ksp. 13. Principle of moments is otherwise called as A) Lami's Theorem. B) Principle of transmissibility of Force. C) Varignon's Theorem. D) Parallelogram Law. Show Answer Correct Answer: C) Varignon's Theorem. 14. If you added a can of Coke (20$^{o}$C) to a fridge (5$^{o}$C), at what temperature would heat stop moving? A) When the coke is at 10 degrees and the fridge is at 5 degrees. B) When the coke is at at 6 degrees and the fridge is at 6 degrees. C) When the coke is at at 5 degrees and the fridge is at 15 degrees. D) When the coke is at at 20 degrees and the fridge is at 5 degrees. Show Answer Correct Answer: B) When the coke is at at 6 degrees and the fridge is at 6 degrees. 15. For the reaction ..... N$_{2 (g) }$+ 3 H$_{2}$ $_{(g)}$ <$\rightarrow$ 2 NH$_{3 (g)}$If the pressure in the system is decreased, which substance will increase in concentration? A) N$_{2}$. B) H$_{2}$. C) N$_{2}$ and H$_{2}$. D) NH$_{3}$. Show Answer Correct Answer: C) N$_{2}$ and H$_{2}$. 16. For the reaction:@@N ..... 2(g) + 3H ..... 2(g) ightleftharpoons 2NH ..... 3(g) $, if the concentration of $ A) Shift to the right. B) Shift to the left. C) No change. D) Increase the rate of reaction. Show Answer Correct Answer: A) Shift to the right. 17. Which of the following best describes the role of the equilibrium constant (K) in a chemical reaction? A) It determines the speed of the reaction. B) It indicates the extent to which a reaction proceeds. C) It measures the energy change in a reaction. D) It shows the temperature at which a reaction occurs. Show Answer Correct Answer: B) It indicates the extent to which a reaction proceeds. 18. What is the equilibrium expression for:Fe$_{3}$O$_{4}$(s) + 4H$_{2}$(g) <=> 3Fe(s) + 4H$_{2}$O(g)K$_{c}$ = A) [Fe]$^{3 }$[H$_{2}$O]$^{4}$ / [Fe$_{3}$O$_{4}$] [H$_{2}$]$^{4}$. B) [Fe$_{3}$O$_{4}$] [H$_{2}$]$^{4 }$/ [Fe]$^{3 }$[H$_{2}$O]$^{4}$. C) [H$_{2}$O]$^{4}$ / [H$_{2}$]$^{4}$. D) [Fe] [H$_{2}$O] / [Fe$_{3}$O$_{4}$] [H$_{2}$]. Show Answer Correct Answer: C) [H$_{2}$O]$^{4}$ / [H$_{2}$]$^{4}$. 19. Which of the statements below is correct?Utility means desire-satisfying power The utility is a function of desire intensity Consumption desire gives rise to utilityAll of the above. A) The correct statement is:All statements are false. B) The correct statement is:Every statement is correct. C) The correct statement is:None of the statements are true. D) The correct statement is:[insert correct statement here]. Show Answer Correct Answer: D) The correct statement is:[insert correct statement here]. 20. An increase in carbon monoxide shifts A) Left (towards reactants). B) Right (towards products). C) Does not affect equilibrium. D) None of the above. Show Answer Correct Answer: A) Left (towards reactants). 21. In a reaction where the equilibrium constant $K_c$ A) The reaction strongly favors the formation of products. B) The reaction strongly favors the formation of reactants. C) The reaction is at equilibrium with equal concentrations of reactants and products. D) The reaction is fast and reaches equilibrium quickly. Show Answer Correct Answer: B) The reaction strongly favors the formation of reactants. 22. How many moles of Ca(NO$_{3}$)$_{2}$ must be added to 1.0 L of a 0.100 M HF solution to begin precipitation of CaF$_{2}$ (s)? For CaF$_{2}$, Ksp = 4.0 x 10$^{-11}$. A) 5.8 x 10$^{-7}$. B) 1.6 x 10$^{-9}$. C) 7.0 x 10$^{-11}$. D) 4.0 x 10$^{-9}$. Show Answer Correct Answer: D) 4.0 x 10$^{-9}$. 23. The quantity of a good or service the customer is willing to buy at various prices. (a) A) A. demand. B) Supply. C) All the above. D) None of the above. Show Answer Correct Answer: A) A. demand. 24. Calculate the solubility of Ag$_{2}$CrO$_{4}$ [Ksp = 9.0 x 10$^{-12}$] in a 1.0 x 10$^{-2}$ M AgNO$_{3}$ solution. A) 1.3 x 10$^{-4}$ mol/L. B) 2.3 x 10$^{-8}$ mol/L. C) 9.0 x 10$^{-8}$ mol/L. D) 9.0 x 10$^{-10}$ mol/L. Show Answer Correct Answer: C) 9.0 x 10$^{-8}$ mol/L. 25. How does a catalyst affect a chemical equilibrium? A) It shifts the equilibrium position to the right. B) It shifts the equilibrium position to the left. C) It increases the rate at which equilibrium is achieved without affecting the equilibrium position. D) It decreases the rate at which equilibrium is achieved without affecting the equilibrium position. Show Answer Correct Answer: C) It increases the rate at which equilibrium is achieved without affecting the equilibrium position. ← 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 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 10Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books