This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part I > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Decreasing the temperature of an endothermic reaction will cause A) Equilibria to shift left and K increases. B) Equilibria to shift left and K decreases. C) Equilibria to shift right and K increases. D) Equilibria to shift right and K decreases. Show Answer Correct Answer: B) Equilibria to shift left and K decreases. 2. An equilibrium constant with a value of 4.6 x 10$^{15 }$indicates that at equilibrium A) The reactants are favored. B) The products are favored. C) Approximately equal concentrations of reactants and products are present. D) None of the above. Show Answer Correct Answer: B) The products are favored. 3. Changes in pressure will only affect substances that are in the ..... state. A) Plasma. B) Solid. C) Liquid. D) Gaseous. Show Answer Correct Answer: D) Gaseous. 4. Which will dissolve the fastest? A) Table salt in hot water. B) Block of salt in hot water. C) Block of salt in cold water. D) Table salt in cold water. Show Answer Correct Answer: A) Table salt in hot water. 5. Rate is another word for ..... A) Change. B) Distance. C) Time. D) Speed. Show Answer Correct Answer: D) Speed. 6. Find the net force:15 N to the right, and another 15 newtons to the right. A) 30 N Left. B) 30 N Right. C) 0 N Right. D) 0 N Left. Show Answer Correct Answer: B) 30 N Right. 7. A per-unit tax almost always leads to a decrease in supply. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. A technological improvement usually leads to a decrease in supply. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. What are the two factors to look for when determining if the reaction is at equilibrium? A) Forward reaction rate is faster than the reverse and concentrations are equal. B) Forward and reverse reaction rates are equal and concentration is constant. C) Forward and revers reaction rates are equal and concentration is equal. D) Forward reaction rate is faster than the reverse and concentration is equal. Show Answer Correct Answer: B) Forward and reverse reaction rates are equal and concentration is constant. 10. The following factors affect the position of equilibrium EXCEPT A) State of Matter. B) Pressure. C) Temperature. D) Concentration. Show Answer Correct Answer: A) State of Matter. 11. What role do environmental changes play in punctuated equilibrium? A) They trigger rapid evolutionary changes after long periods of stability. B) They lead to the extinction of species without any evolutionary change. C) They have no impact on evolutionary processes. D) They cause gradual changes in species over time. Show Answer Correct Answer: A) They trigger rapid evolutionary changes after long periods of stability. 12. Which Hardy-Weinberg equation represents the genotype frequencies in a population? A) P + q = 1. B) P2 + pq2 + q2 = 1. C) P + 2pq + q3 = 1. D) P2 + 2pq + q2 = 1. Show Answer Correct Answer: D) P2 + 2pq + q2 = 1. 13. For the reaction ..... N$_{2 (g) }$+ 3 H$_{2}$ $_{(g)}$ <=> 2 NH$_{3 (g)}$If the pressure in the system is increased, which substance(s) will increase in concentration? A) N$_{2 }$ (as 2 mol gas $\rightarrow$ 4 mol gas). B) H$_{2}$ (as 2 mol gas $\rightarrow$ 4 mol gas). C) N$_{2}$ and H$_{2 }$(as 2 mol gas $\rightarrow$ 4 mol gas). D) NH$_{3}$ (as 4 mol gas $\rightarrow$ 2 mol gas). Show Answer Correct Answer: D) NH$_{3}$ (as 4 mol gas $\rightarrow$ 2 mol gas). 14. Does a bridge anchored resting on two pillars have any torque? A) Yes, but it is at equilibrium. B) No, Bridges can't have torque. C) Yes, but it will soon break because of the torque. D) No, it isn't moving. Show Answer Correct Answer: A) Yes, but it is at equilibrium. 15. An increase in carbon dioxide shifts A) Left (towards reactants). B) Right (towards products). C) Does not affect equilibrium. D) None of the above. Show Answer Correct Answer: B) Right (towards products). 16. A situation in which resources are distributed according to price A) Rationing. B) Black market. C) Free market. D) Supply shock. Show Answer Correct Answer: C) Free market. 17. Given the reaction at equilibrium:2SO$_{2}$(g) +O$_{2}$(g) <$\rightarrow$ 2SO$_{3}$(g) + HEATWhich change will shift the equilibrium to the right? A) Decreasing the amount of SO$_{2}$(g). B) Decrease the pressure. C) Increasing the pressure. D) Decreasing the amount of O$_{2}$(g). Show Answer Correct Answer: C) Increasing the pressure. 18. Adding a catalyst will A) Shift Left (towards reactants). B) Shift Right (towards products). C) Speed up the reaction and shift the equilibrium. D) Speed up the reaction and NOT affect equilibrium. Show Answer Correct Answer: D) Speed up the reaction and NOT affect equilibrium. 19. If a price is below the equilibrium price it creates a ..... A) Shortage. B) Supply. C) Surplus. D) Market price. Show Answer Correct Answer: A) Shortage. 20. Which statement is not correct for a reaction at equilibrium? A) The forward and reverse reactions both continue. B) The rates of the forward and reverse reactions are equal. C) The concentration of the products and reactants are equal. D) All of these statements are correct. Show Answer Correct Answer: C) The concentration of the products and reactants are equal. 21. Configuration entropy in crystalline solids A) Increases if impurity concentration increases. B) Increases if impurity concentration reduces. C) Independent of impurity concentration. D) None of the above. Show Answer Correct Answer: A) Increases if impurity concentration increases. 22. For the reaction $H_2(g) + I_2(g) \rightleftharpoons 2HI(g)$ $K_c$ A) The concentrations of $H_2$ $I_2$ $HI$. B) The reaction does not reach equilibrium. C) The concentration of $H_2$ $I_2$ $HI$. D) The concentration of $HI$ $H_2$ $I_2$. Show Answer Correct Answer: D) The concentration of $HI$ $H_2$ $I_2$. 23. What will be the shape of the Indifference curve when its slope increases? A) Convex to origin. B) Concave to origin. C) Straight line. D) None of these. Show Answer Correct Answer: B) Concave to origin. 24. If acetic acid is mixed with Sodium Acetate then H + Ion concentration will be A) Increase. B) PH decreases. C) Remain unchanged. D) Decrease. Show Answer Correct Answer: C) Remain unchanged. 25. In the reaction @@ext{N} ..... 2(g) + 3ext{H} ..... 2(g) ightleftharpoons 2ext{NH} ..... 3(g)@@, what is the effect of decreasing the volume of the container? A) The reaction stops. B) The equilibrium shifts to the right. C) The equilibrium remains unchanged. D) The equilibrium shifts to the left. Show Answer Correct Answer: B) The equilibrium shifts to the right. 26. Grinding a seltzer tablet into powder increases the rate of reaction due to increased A) Surface area. B) Temperature. C) Reactants. D) Concentration. Show Answer Correct Answer: A) Surface area. 27. Why are you more stable when riding a bicycle at a faster speed? A) It's not easier to ride at a faster speed. B) The bike has more momentum. C) The wheels have angular momentum. D) You have more mass. Show Answer Correct Answer: C) The wheels have angular momentum. 28. A solid sphere rolling without slipping down an incline has: A) Constant angular momentum. B) Rotational kinetic energy. C) Translational kinetic energy. D) Zero external torques. Show Answer Correct Answer: B) Rotational kinetic energy. 29. For the reaction @@ext\{N\} ..... 2(g) + 3ext\{H\} ..... 2(g) ightleftharpoons 2ext\{NH\} ..... 3(g) $, what is the expression for the equilibrium constant $ A) $K_c = \frac{[\text{NH}_3]}{[\text{N}_2][\text{H}_2]}$. B) $K_c = \frac{[\text{N}_2][\text{H}_2]^3}{[\text{NH}_3]^2}$. C) $K_c = \frac{[\text{N}_2][\text{H}_2]}{[\text{NH}_3]}$. D) $K_c = \frac{[\text{NH}_3]^2}{[\text{N}_2][\text{H}_2]^3}$. Show Answer Correct Answer: D) $K_c = \frac{[\text{NH}_3]^2}{[\text{N}_2][\text{H}_2]^3}$. 30. Among the following acids which have the lowest pKa value? A) CH$_{3}$COOH. B) HCOOH. C) (CH$_{3}$)$_{2}$CH-COOH. D) CH$_{3}$CH$_{2}$COOH. Show Answer Correct Answer: B) HCOOH. 31. It is an implicit agreement between the buyers and the sellers A) Shortage. B) Surplus. C) Equilibrium. D) Waste. Show Answer Correct Answer: C) Equilibrium. 32. What is a waste? A) The price set by the supplier is higher than the price that the consumers are willing to pay at a given quantity. B) The price set by the supplier is lesser than the price that the consumers are willing to pay at a given quantity. C) All the above. D) None of the above. Show Answer Correct Answer: A) The price set by the supplier is higher than the price that the consumers are willing to pay at a given quantity. 33. What does the equilibrium constant ( $K_{eq}$ A) The speed at which equilibrium is reached. B) The ratio of the concentration of products to reactants at equilibrium. C) The rate at which reactants are converted into products. D) The temperature dependence of the reaction. Show Answer Correct Answer: B) The ratio of the concentration of products to reactants at equilibrium. 34. How many types of equilibrium A) 4. B) 3. C) 2. D) 1. Show Answer Correct Answer: B) 3. 35. Which decreases first as more of a good is consumed? A) Total utility. B) Marginal physical product. C) Marginal utility. D) Average utility. Show Answer Correct Answer: C) Marginal utility. 36. Which of the following is an electrolyte? A) NaOH. B) Urea (CO(NH$_{2}$)$_{2}$. C) MgS. D) C$_{6}$H$_{12}$O$_{6}$. Show Answer Correct Answer: A) NaOH. 37. An equilibrium constant with a large magnitude indicates ..... A) Nothing, without considering the stoichiometry of the reaction. B) More reactants at equilibrium. C) A very fast reaction. D) More products at equilibrium. Show Answer Correct Answer: D) More products at equilibrium. 38. Values of the supply schedule are shown graphically in the A) Supply schedule. B) Equilibrium point. C) Demand curve. D) Supply curve. Show Answer Correct Answer: D) Supply curve. 39. 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). 40. 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. 41. MPC and multiplier have a ..... relationship A) Direct. B) Indirect. C) Constant. D) None of the above. Show Answer Correct Answer: A) Direct. 42. The buffer solution is able to maintain pH by some events, except ..... A) Addition of water. B) The addition of excess acid. C) Dilution. D) The addition of a little base. E) The addition of a little acid. Show Answer Correct Answer: B) The addition of excess acid. 43. 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. 44. 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. 45. 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. 46. What does the M after a concentration value stand for? A) Moles. B) Mass. C) Meters. D) Music. Show Answer Correct Answer: A) Moles. 47. 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. 48. 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. 49. What is the effect of pressure on the solubility of gases in liquids? A) Pressure has no effect on solubility. B) Solubility first decreases then increases with pressure. C) Solubility increases with increasing pressure. D) Solubility decreases with increasing pressure. Show Answer Correct Answer: C) Solubility increases with increasing pressure. 50. 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. 51. 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. 52. For the reaction:@@N ..... 2(g) + 3H ..... 2(g) ightleftharpoons 2NH ..... 3(g) $, if the concentration of $ A) Shift to the left. B) Shift to the right. C) Increase the rate of reaction. D) No change. Show Answer Correct Answer: B) Shift to the right. 53. Which of the following best describes the role of the equilibrium constant (K) in a chemical reaction? A) It shows the temperature at which a reaction occurs. B) It indicates the extent to which a reaction proceeds. C) It determines the speed of the reaction. D) It measures the energy change in a reaction. Show Answer Correct Answer: B) It indicates the extent to which a reaction proceeds. 54. What is the equilibrium expression for:Fe$_{3}$O$_{4}$(s) + 4H$_{2}$(g) <=> 3Fe(s) + 4H$_{2}$O(g)K$_{c}$ = A) [Fe$_{3}$O$_{4}$] [H$_{2}$]$^{4 }$/ [Fe]$^{3 }$[H$_{2}$O]$^{4}$. B) [H$_{2}$O]$^{4}$ / [H$_{2}$]$^{4}$. C) [Fe]$^{3 }$[H$_{2}$O]$^{4}$ / [Fe$_{3}$O$_{4}$] [H$_{2}$]$^{4}$. D) [Fe] [H$_{2}$O] / [Fe$_{3}$O$_{4}$] [H$_{2}$]. Show Answer Correct Answer: B) [H$_{2}$O]$^{4}$ / [H$_{2}$]$^{4}$. 55. 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]. 56. 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). 57. 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. 58. 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) 4.0 x 10$^{-9}$. B) 7.0 x 10$^{-11}$. C) 5.8 x 10$^{-7}$. D) 1.6 x 10$^{-9}$. Show Answer Correct Answer: A) 4.0 x 10$^{-9}$. 59. 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. 60. 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) 9.0 x 10$^{-10}$ mol/L. B) 2.3 x 10$^{-8}$ mol/L. C) 1.3 x 10$^{-4}$ mol/L. D) 9.0 x 10$^{-8}$ mol/L. Show Answer Correct Answer: D) 9.0 x 10$^{-8}$ mol/L. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 1Class 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books