This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 25 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following salts will have the highest solubility in water? A) A salt with a low Ksp value. B) A salt with a high Ksp value. C) A salt with a neutral pH. D) A salt with a high molecular weight. Show Answer Correct Answer: B) A salt with a high Ksp value. 2. The molar solubility of PbI$_{2}$ is 1.5 x 10$^{-3}$ M. Calculate the value of Ksp for PbI$_{2}$. A) 1.5 x 10$^{-3}$. B) 2.3 x 10$^{-6}$. C) 1.4 x 10$^{-8}$. D) 3.4 x 10$^{-9}$. Show Answer Correct Answer: C) 1.4 x 10$^{-8}$. 3. When an object is heated, it will absorb heat energy and the temperature will A) Decrease. B) Increase. C) All the above. D) None of the above. Show Answer Correct Answer: B) Increase. 4. For the reaction @@ext\{A\} + ext\{B\} ightleftharpoons ext\{C\} + ext\{D\}@@, the equilibrium constant expression is given by: A) $K_c = \frac{[\text{A}][\text{B}]}{[\text{C}][\text{D}]}$. B) $K_c = \frac{[\text{C}][\text{D}]}{[\text{A}][\text{B}]}$. C) $K_c = \frac{[\text{C}]}{[\text{A}][\text{B}]}$. D) $K_c = \frac{[\text{A}]}{[\text{C}][\text{D}]}$. Show Answer Correct Answer: B) $K_c = \frac{[\text{C}][\text{D}]}{[\text{A}][\text{B}]}$. 5. Blood has an approximate pH of 7.35. What is the pOH of blood? A) 7.65. B) 12.65. C) 6.65. D) 2.65. Show Answer Correct Answer: C) 6.65. 6. A large value of K$_{c }$indicates ..... A) More products than reactants at equilibrium. B) More reactants than products at equlibrium. C) Reactants = products. D) Only products are present at equilibrium. Show Answer Correct Answer: A) More products than reactants at equilibrium. 7. An endothermic reaction is always favored by ..... A) Low Temperature. B) High Temperature. C) Not dependent on temperature. D) Low pressure. Show Answer Correct Answer: B) High Temperature. 8. When quantity supplied is not equal to quantity demanded A) Price ceiling. B) Excess demand. C) Equilibrium. D) Disequilibrium. Show Answer Correct Answer: D) Disequilibrium. 9. A value of K$_{eq}$ greater than 1 means ..... A) Reaction has not yet come to completion. B) Reactants are favored over products. C) Products are favored over reactants. D) The reaction is not in equilibrium. Show Answer Correct Answer: C) Products are favored over reactants. 10. Which of the following compounds has the lowest molar solubility in mol/L in water at 25$^\circ$C? A) Ag$_{3}$PO$_{4}$ Ksp = 1.8 x 10$^{-18}$. B) Sn(OH)$_{2}$ Ksp = 5 x 10$^{-26}$. C) CdS Ksp = 3.6 x 10$^{-29}$. D) Al(OH)$_{3 }$ Ksp = 2 x 10$^{-33}$. Show Answer Correct Answer: C) CdS Ksp = 3.6 x 10$^{-29}$. 11. When Total Utility Declines Marginal Utility A) Declines. B) Increases. C) Became zero. D) Became negative. Show Answer Correct Answer: D) Became negative. 12. In Haber process, 0.60 mol dm$^{-3}$ of nitrogen is mixed with 1.80 mol dm$^{-3}$ of hydrogen in a sealed container at a certain temperature to give ammonia.N$_{2}$(g) + 3H$_{2}$(g) $\Longleftrightarrow$ A) 0.154 mol$^{-2}$ dm$^{6}$. B) 0.265 mol$^{-2}$ dm$^{6}$. C) 0.680 mol$^{-2}$ dm$^{6}$. D) 1.470 mol$^{-2}$ dm$^{6}$. Show Answer Correct Answer: A) 0.154 mol$^{-2}$ dm$^{6}$. 13. A framed structure is Redundant, if the number of members are ..... (2j-3), where j is the number of joints. A) Equal to. B) Less Than. C) Greater Than. D) None. Show Answer Correct Answer: C) Greater Than. 14. What happens to the amount of chemical reactants (measured in Molarity or pressure) as a chemical change progresses "to the right" towards products, aka: "in the forward direction?" A) It stays constant before it reaches equilibrium. B) It goes up before it reaches equilibrium. C) It decreases before it reaches equilibrium. D) None of the above. Show Answer Correct Answer: C) It decreases before it reaches equilibrium. 15. Consider the following equilibrium:C(s) + CO$_{2}$(g) $\Longleftrightarrow$ A) 1.95 mol dm$^{-3}$. B) 1.60 mol dm$^{-3}$. C) 0.625 mol$^{-1}$ dm$^{3}$. D) 0.512 mol$^{-1}$ dm$^{3}$. Show Answer Correct Answer: B) 1.60 mol dm$^{-3}$. 16. In economics Equilibrium refers to ..... (be careful, the answer is sneaky) A) The price at which the quantity demanded equals the quantity supplied. B) Where price is equal to quantity demanded and quantity supplied. C) The price at which the quantity demanded is exactly equal to the quantity supplied and there is no tendency for change. D) None of the above. Show Answer Correct Answer: C) The price at which the quantity demanded is exactly equal to the quantity supplied and there is no tendency for change. 17. The slope of budget line is:- A) Concave. B) Convex. C) MRS. D) Price ratio of the commodity. Show Answer Correct Answer: D) Price ratio of the commodity. 18. Explain the effect on the position of equilibrium of increasing pressure A) Equilibrium position shifts in the direction that forms more gas molecules-more pressure. B) Equilibrium position shifts in the direction that forms fewer gas molecules-less pressure. C) All the above. D) None of the above. Show Answer Correct Answer: B) Equilibrium position shifts in the direction that forms fewer gas molecules-less pressure. 19. Phosphorous trichloride and phosphorous pentachloride equilibrate in the presence of molecular chlorine according to the reaction:PCl$_{3 }$(g) + Cl$_{2}$ (g) $\rightarrow$ PCl$_{5}$ (g)An equilibrium mixture at 450 K contains P$_{PCl3}$=0.224 atm, P$_{Cl2}$ = 0.284 atm, and P$_{PCl5}$ = 4.24 atm. What is the value of Kp at this temperature? A) 0.270. B) 8.36. C) 3.74. D) 66.7. Show Answer Correct Answer: D) 66.7. 20. A car weighing 15, 000 N rests on a 15$^{o}$ hill. Find the components of the force exerted by the car's weight at right angles to the hill A) 15, 000 N. B) 14, 489 N. C) 3882 N. D) 3900 N. Show Answer Correct Answer: A) 15, 000 N. 21. A chemical equilibrium may be established by starting a reaction with ..... A) Reactants only. B) Products only. C) Equal quantities of reactants and products. D) Any quantities of reactants and products. E) All of the above. Show Answer Correct Answer: E) All of the above. 22. What would be the effect of increasing the temperature to the equilibrium of an endothermic 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: B) Equilibrium shifts to the right. 23. A solution whose pH value is less than 7 will be A) Basic. B) Neutral. C) Acidic. D) Buffer. Show Answer Correct Answer: C) Acidic. 24. Two objects with different temperature in thermal contact will reach thermal equilibrium when ..... A) Both object becomes hotter. B) Both objects become colder. C) Both object reach the same final temperature. D) Net heat transfer other than zero. Show Answer Correct Answer: C) Both object reach the same final temperature. 25. Which of the following statements best describes chemical equilibrium? A) The rate of the forward reaction is equal to the rate of the reverse reaction. B) The concentration of reactants is higher than that of products. C) The reaction has stopped completely. D) The concentration of products is higher than that of reactants. Show Answer Correct Answer: A) The rate of the forward reaction is equal to the rate of the reverse reaction. ← 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