This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When K$_{eq}$ < 1, A) There are more products than reactants when the reaction reached equilibrium. B) There are more reactant than products when the reaction reached equilibrium. C) The amount of reactants is equal to the amount of products. D) None of the above. Show Answer Correct Answer: B) There are more reactant than products when the reaction reached equilibrium. 2. Two equal and oppositely directed forces acting on an object will be in equilibrium A) Only if they act on the same point on the object. B) If they are separated by a distance. C) When they are balanced by a third force. D) When their moments about the same point are equal. Show Answer Correct Answer: D) When their moments about the same point are equal. 3. The factors that effect a system at equilibrium except: A) Caltalyst. B) Temperature. C) Pressure and volume. D) Concentration. Show Answer Correct Answer: A) Caltalyst. 4. Gradualism and punctuated equilibrium A) Can exist together. B) Must exist together. C) Never exist together. D) Must happen after each other. Show Answer Correct Answer: A) Can exist together. 5. Which of these could NOT be a unit for partial pressure? A) Atm. B) KPa. C) Pa. D) Mol dm$^{-3}$. Show Answer Correct Answer: D) Mol dm$^{-3}$. 6. In a qualitative analysis for the presence of Pb$^{2+}$, Fe$^{2+}$, and Cu$^{2+}$ ions in an aqueous solution, which of the following will allow the separation of Pb2+ from the other ions at room temperature? A) Adding dilute Na$_{2}$S (aq) solution. B) Adding dilute HCl(aq) solution. C) Adding dilute NaOH(aq) solution. D) Adding dilute NH$_{3}$(aq) solution. E) Adding dilute HNO$_{3}$(aq) solution. Show Answer Correct Answer: B) Adding dilute HCl(aq) solution. 7. What is the law of mass action? A) The law stating that equilibrium constants remain constant with changing concentrations. B) The law stating that the rate of a chemical reaction is directly proportional to the concentration of reactants. C) The law stating that the volume of a gas is inversely proportional to its pressure. D) The law stating that energy is conserved in a chemical reaction. Show Answer Correct Answer: A) The law stating that equilibrium constants remain constant with changing concentrations. 8. If you burn your hand on the handle of a hot pot, heat was transferred to your skin by A) Conduction. B) Convection. C) Radiation. D) Equilibrium. Show Answer Correct Answer: A) Conduction. 9. A population of frogs has 37 individuals who are brown in color and 194 individuals who express the dominant green color. What is the dominant allele frequency for this population? A) 0.2. B) 0.4. C) 0.6. D) 0.8. Show Answer Correct Answer: C) 0.6. 10. Calculate the approximate boiling point (in $^{o}$C) of a solution of 285 g of magnesium chloride in 2.0 kg of water. (K$_{b}$=0.51 $^{o}$C/m) A) 103.1 $^{o}$C. B) 102.3 $^{o}$C. C) 101.6 $^{o}$C. D) 104.8 $^{o}$C. Show Answer Correct Answer: B) 102.3 $^{o}$C. 11. The financial and opportunity costs consumers pay in looking for a good or service. A) Shortage. B) Fad. C) Search costs. D) Surplus. Show Answer Correct Answer: C) Search costs. 12. Which of the following changes will shift the position of the equilibrium to the left? A) Increasing the temperature of an exothermic reaction. B) Increasing the pressure of a reaction that has the same number of moles of gas on both sides. C) Adding a catalyst to a reaction. D) Adding more concentrations to the reactants. Show Answer Correct Answer: A) Increasing the temperature of an exothermic reaction. 13. A 300.0-mL saturated solution of copper(II) periodate, Cu(IO$_{4}$)$_{2}$, contains 0.44 grams of dissolved salt. Determine the Ksp. A) 1.4 x 10$^{-7}$. B) 6.72 x 10$^{-7}$. C) 9.2 x 10$^{-6}$. D) 6.1 x 10$^{-5}$. Show Answer Correct Answer: A) 1.4 x 10$^{-7}$. 14. Why is a consumer's spending restricted? A) Due to the utility maximisation. B) Due to the budget constraint. C) Due to the demand curve. D) Due to the marginal utility. Show Answer Correct Answer: B) Due to the budget constraint. 15. The lever arm is the ..... distance from the axis of rotation to the point where the force is exerted. A) Angular. B) Displaced. C) Perpendicular. D) None of these. Show Answer Correct Answer: C) Perpendicular. 16. If 30 mL of 5.0 x 10$^{-4}$ M Ca(NO$_{3}$)$_{2}$ are added to 70 mL of 2.0 x 10$^{-4}$ M NaF, will a precipitate occur? (Ksp of CaF$_{2}$ = 4.0 x 10$^{-11}$) A) No, because the ion product (Qsp) is greater than Ksp. B) Yes, because the ion product (Qsp) is less than Ksp. C) No, because the ion product (Qsp) is less than Ksp. D) Yes, because the ion product is (Qsp) greater than Ksp. Show Answer Correct Answer: C) No, because the ion product (Qsp) is less than Ksp. 17. If MPC = MPS, what is the value of the investment multiplier? A) 0. B) 3. C) 1. D) 2. Show Answer Correct Answer: D) 2. 18. Reactant A) The reaction that forms products from reactants. B) A measurement of how much solute exists within a certain volume of solvent or solution. C) A substance that takes part in and undergoes change in a chemical reaction. D) Condition of continuous, random movement of particles but no overall change in concentration of materials. Show Answer Correct Answer: C) A substance that takes part in and undergoes change in a chemical reaction. 19. Which of the following slows down the rate of a chemical reaction? A) Place the reactants in hot water. B) Place the products in ice bath. C) Place the reactants in a ice bath. D) Keep stirring the reactants with a stirring rod. Show Answer Correct Answer: C) Place the reactants in a ice bath. 20. Market forces are best described as A) Supply and demand determining prices. B) The government set a minimum price for corn so farmers can make more money. C) The government setting a maximum price on gas so people can save money. D) A group of buyers and sellers for a particular good or service. Show Answer Correct Answer: A) Supply and demand determining prices. 21. When all reactants and products have the same physical state, then the reaction is called A) Heterogeneous equilibrium. B) Homogeneous equilibrium. C) All the above. D) None of the above. Show Answer Correct Answer: B) Homogeneous equilibrium. 22. If a reversible reaction has reached equilibrium, which of the following is true about the concentration of the reactants vs the products? A) Some reactants are present, as are some prooducts. B) Only reactant is present, there are no products. C) Only product is present, there are no reactants. D) None of the above. Show Answer Correct Answer: A) Some reactants are present, as are some prooducts. 23. Solution A contains 0.1 mol of sucrose, dissolved in 500. g of water. Solution B contains 0.1 mol of sodium chloride, dissolved in 500. g of water. Which of the following statements about theses solutions is true? A) Both solutions have the same vapor pressure. B) Solution A would boil at a higher temperature than solution B would. C) Both solutions would boil at the same temperature. D) Solution A would freeze at a higher temperature than solution B would. Show Answer Correct Answer: D) Solution A would freeze at a higher temperature than solution B would. 24. Who gave the cardinal concept of utility? A) Marshall. B) Hicks. C) Pigou. D) Robinson. Show Answer Correct Answer: A) Marshall. 25. What is the purpose of a catalyst on an equilibrium reaction? A) To increase the rate of forward reaction. B) To increase rate of backward reaction. C) In increase both forward and backward reaction rates. D) No effect. Show Answer Correct Answer: C) In increase both forward and backward reaction rates. ← 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