This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A 6.0 kg box sledge is travelling across the ice at a speed of 9.0 m/s when a 12 kg package is dropped into it vertically. As a result it A) Stops moving. B) Continues to move at the same speed. C) Continues to move at half the initial speed. D) Continues to move at one-third the initial speed. Show Answer Correct Answer: D) Continues to move at one-third the initial speed. 2. For the reaction @@ext\{N\} ..... 2(g) + 3ext\{H\} ..... 2(g) ightleftharpoons 2ext\{NH\} ..... 3(g) $, the equilibrium constant $ $ is 0.5 at a certain temperature. If the initial concentrations are $ $ and $ $, what will be the concentration of $ A) 0.5 M. B) 1.0 M. C) 1.5 M. D) 2.0 M. Show Answer Correct Answer: B) 1.0 M. 3. If the reaction quotient Q has a value larger than the related equilibrium constant, K ..... A) The reaction is at equilibrium. B) The reaction is not at equilibrium, and will make more products at the expense of reactants. C) The reaction is not at equilibrium, and will make more reactants at the expense of products. D) The value of K will increase until it is equal to Q. Show Answer Correct Answer: C) The reaction is not at equilibrium, and will make more reactants at the expense of products. 4. Reverse reaction A) A substance that forms in a chemical reaction. B) Factors found in the built, natural, and social environments such as noise, temperature, humidity, and pressure. C) A substance that takes part in and undergoes change in a chemical reaction. D) The reaction that forms reactants from products. Show Answer Correct Answer: D) The reaction that forms reactants from products. 5. Equilibrium in a market means which of the following? A) The point at which quantity supplied and quantity demanded are the same. B) The point at which unsold goods begin to pile up. C) The point at which suppliers begin to reduce prices. D) None of the above. Show Answer Correct Answer: A) The point at which quantity supplied and quantity demanded are the same. 6. Define Moment A) Product of force and perpendicular distance from a point. B) Twisting force. C) Perfectly rigid. D) No.of forces. Show Answer Correct Answer: A) Product of force and perpendicular distance from a point. 7. How does a catalyst change during a reaction? A) It is part of the products. B) It combines with the reactants. C) It precipitates. D) It remains unchanged. Show Answer Correct Answer: D) It remains unchanged. 8. Equal amounts of reactants are poured into a suitable container. Given sufficient time, the reactants may be converted almost entirely to products if: A) K is less than 1. B) K is greater than 1. C) K is equal to 1. D) K is equal to 0. Show Answer Correct Answer: B) K is greater than 1. 9. What is the relationship between the forward rate of reaction and the reverse rate of reaction in a reversible reaction at equilibrium? A) Forward is greater. B) Reverse is greater. C) The two are equal. D) Can not determine unless you know the rate law and k. Show Answer Correct Answer: C) The two are equal. 10. Why does a higher temperature increase the rate of a reaction? A) It increases both the frequency and energy of particle collisions. B) It only increases the frequency of particle collisions. C) It only increases the energy of particle collisions. D) It reduces the activation energy of the reaction. Show Answer Correct Answer: A) It increases both the frequency and energy of particle collisions. 11. Indifference curve slopes downward from A) Left to right. B) Right to left. C) Both of these. D) None of these. Show Answer Correct Answer: A) Left to right. 12. Given:2A(g) <=> 2B(g) + C(g). At a particular temperature, K$_{c}$ = 16000.Raising the pressure, by decreasing the volume of the container, will ..... A) Cause the value of K$_{}$$_{c}$ to increase. B) Cause the value of K$_{c}$ to decrease$_{}$. C) Have no effect on the value of K$_{c}$ as temperature does not change$_{}$. D) Favour the forward reaction. Show Answer Correct Answer: C) Have no effect on the value of K$_{c}$ as temperature does not change$_{}$. 13. When the quantity demanded is greater than the quantity supplied it is known as A) Equilibrium. B) A shortage. C) A surplus. D) An opportunity cost. Show Answer Correct Answer: B) A shortage. 14. If the forces acting on an object have a net force of zero then the object must be at rest. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. Number of atoms having energy more than H in an ensemble of total N atoms (at temperature T ) is, K is Boltzmann constant. A) Exp(H/KT). B) Exp(-H/KT). C) -exp(H/KT). D) N*exp(-H/KT). E) None of these are correct. Show Answer Correct Answer: D) N*exp(-H/KT). 16. If K A) Left. B) Right. C) All the above. D) None of the above. Show Answer Correct Answer: A) Left. 17. Energy will always be transferred from the ..... A) Hotter sample to the colder sample. B) Colder sample to the hotter sample. C) All the above. D) None of the above. Show Answer Correct Answer: A) Hotter sample to the colder sample. 18. According to Le Chatelier's Principle, what happens to the equilibrium position when the temperature of an exothermic reaction is increased? A) Shifts to the right, favoring products. B) Shifts to the left, favoring reactants. C) Remains unchanged. D) Shifts to the right, favoring reactants. Show Answer Correct Answer: B) Shifts to the left, favoring reactants. 19. What type of evolution where there is a sudden, rapid change then no change for a long time? A) Co-Evolution. B) Punctuated Equilibrium. C) Divergent Evolution. D) Convergent Evolution. Show Answer Correct Answer: B) Punctuated Equilibrium. 20. The value of K$_{sp}$ of AgCl is 1.8 x 10$^{-10}$. What would be the molar concentration of Ag$^{+}$ and Cl$^{-}$ in AgCl in pure water placed in contact with solid AgCl$_{(s)}$? A) 3.2 x 10$^{-20}$ M. B) 1.3 x 10 $^{-5}$ M. C) 1.8 x 10 $^{-10}$ M. D) 1.7 x 10$^{-7}$M. Show Answer Correct Answer: D) 1.7 x 10$^{-7}$M. 21. Which of the following are not in a state of equilibrium? A) An object at rest. B) An object moving in a straight line at a constant speed. C) An object that is speeding up. D) None of the above. Show Answer Correct Answer: C) An object that is speeding up. 22. Sodium chloride is added slowly to a solution that is 0.010 M in Cu+, Ag+, and Au+. The Ksp values for the chloride salts are 1.9 x 10$^{-7}$, 1, 6 x 10$^{-10}$, and 2.0 x 10$^{-13}$, respectively. Which compound will precipitate first? A) CuCl(s). B) AgCl(s). C) AuCl(s). D) All will precipitate at the same time. Show Answer Correct Answer: C) AuCl(s). 23. Which of the following will precipitate when combined with the sulfide ion? A) Rb$^{+1}$. B) Ba$^{+2}$. C) Ca$^{+2}$. D) NH$_{4}$$^{+1}$. Show Answer Correct Answer: C) Ca$^{+2}$. 24. A reaction is in a state of dynamic equilibrium when A) It is in an open system. B) There is the same amount of product and reactant. C) The forward and reverse rates are equal. D) You change the temperature. Show Answer Correct Answer: C) The forward and reverse rates are equal. 25. A decrease in supply causes the supply curve to shift to the right. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← 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 10Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books