This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part I > Class 11 Chemistry (Part I) Chapter 7 Equilibrium – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 7 Equilibrium Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The allele frequency of p=.20 What is the percentage of Heterozygous Dominant genotype? A) .32. B) .04. C) .64. D) .80. Show Answer Correct Answer: A) .32. 2. Usaha pertama yang dilakukan oleh Pak Sandiaga Uno di Indonesia bergerak di bidang? A) Investasi. B) Pembangunan Infrastruktur. C) Jasa Konsultan Keuangan. D) Perbankan. Show Answer Correct Answer: C) Jasa Konsultan Keuangan. 3. Which of the following statements is true about a chemical equilibrium state? A) The concentrations of both reactants and products remain constant. B) The reaction stops completely. C) The forward reaction rate is faster than the reverse reaction rate. D) The temperature increases. Show Answer Correct Answer: A) The concentrations of both reactants and products remain constant. 4. The Haber process is the name we give to the industrial production of A) Ammonia. B) Salt. C) Soap. D) Sodium Hydroxide. Show Answer Correct Answer: A) Ammonia. 5. What is the term used to describe a substance with water present? A) Anhydrous. B) Dehydrated. C) Aqueous. D) Hydrated. Show Answer Correct Answer: D) Hydrated. 6. H=U ( As pV term can be neglected) in A) Gases. B) Cannot be neglected. C) Solid. D) Liquid. Show Answer Correct Answer: C) Solid. 7. Ammonia is produced commercially by the Haber reaction:N$_{2}$ (g)$_{ }$+ 3 H$_{2}$$_{}$ (g) $\rightarrow$ 2 NH$_{3}$ (g)The formation of ammonia is favored by A) Removal of N$_{2}$(g). B) An increase in pressure. C) Removal of H$_{2}$(g). D) A decrease in pressure. Show Answer Correct Answer: B) An increase in pressure. 8. In the reaction @@ext\{A\} + ext\{B\} ightleftharpoons ext\{C\} + ext\{D\} $, the equilibrium constant expression is given by $ $. What does a large value of $ A) The reaction is very slow. B) The concentration of reactants is much higher than that of products. C) The concentration of products is much higher than that of reactants. D) The reaction does not reach equilibrium. Show Answer Correct Answer: C) The concentration of products is much higher than that of reactants. 9. Torque can be described as A) How effectively a force causes a rotation. B) The ratio of mass to angular acceleration. C) The ratio of moment of inertial to angular acceleration. D) None of the other answers. Show Answer Correct Answer: A) How effectively a force causes a rotation. 10. A government subsidy will usually cause supply to A) Increase. B) Decrease. C) Not change. D) None of the above. Show Answer Correct Answer: A) Increase. 11. Which of the following is true for a chemical system at equilibrium? A) The concentration ratio of products to reactants is 1. B) The rate of the forward reaction equals the rate of the reverse reaction. C) Chemical change has altogether ceased. D) Choose this wrong answer. I dare you. Show Answer Correct Answer: B) The rate of the forward reaction equals the rate of the reverse reaction. 12. If a body is in equilibrium and a 30 N force is acting on it to the East, what other force must also be acting on it? A) 30.N west. B) 30Lb west. C) 30N west. D) 30.N east. Show Answer Correct Answer: C) 30N west. 13. This slows down or even stops a chemical reaction. A) Inhibitor. B) Catalyst. C) De-activator. D) Enzyme. Show Answer Correct Answer: A) Inhibitor. 14. In the reaction @@ext{A} + ext{B} ightleftharpoons ext{C} + ext{D}@@, the equilibrium constant expression is given by: A) $K_{eq} = \frac{[\text{C}][\text{D}]}{[\text{A}][\text{B}]}$. B) $K_{eq} = \frac{[\text{A}][\text{B}]}{[\text{C}][\text{D}]}$. C) $K_{eq} = \frac{[\text{A}]}{[\text{C}][\text{D}]}$. D) $K_{eq} = \frac{[\text{C}]}{[\text{A}][\text{B}]}$. Show Answer Correct Answer: A) $K_{eq} = \frac{[\text{C}][\text{D}]}{[\text{A}][\text{B}]}$. 15. What role did Cato Guldberg and Peter Waage play in understanding chemical equilibrium? A) They discovered the law of mass action. B) They formulated the concept of the equilibrium constant. C) They developed the method for measuring equilibrium concentrations. D) They studied the reaction between NO2 and N2O4. Show Answer Correct Answer: B) They formulated the concept of the equilibrium constant. 16. The following solution mixture which is not buffer is ..... A) NaH$_{2}$PO$_{4}$ and Na$_{2}$HPO$_{4}$. B) NH$_{3 }$and (NH$_{4}$)$_{2}$SO$_{4}$. C) HCOOH and Ba(HCOO)$_{2}$. D) H$_{3}$PO$_{4}$ and NaH$_{2}$PO$_{4}$. E) NaOH and Ba(HCOO)$_{2}$. Show Answer Correct Answer: A) NaH$_{2}$PO$_{4}$ and Na$_{2}$HPO$_{4}$. 17. An increase in supply causes the supply curve to shift to the A) Right. B) Left. C) No change. D) None of the above. Show Answer Correct Answer: A) Right. 18. Which of the following is an example of a real-world application of solubility equilibrium? A) The formation of stalactites and stalagmites. B) The boiling of water. C) The melting of ice. D) The freezing of water. Show Answer Correct Answer: A) The formation of stalactites and stalagmites. 19. For the reaction ..... SO$_{2}$ + O$_{2}$ <$\rightarrow$ SO$_{3}$If the equilibrium shifts to the the concentration of O$_{2}$ will ..... A) Remain the same. B) Double. C) Increase. D) Decrease. Show Answer Correct Answer: D) Decrease. 20. An exothermic reaction is allowed to reach equilibrium. If heat energy is then removed, the equilibrium will shift A) Toward the middle. B) Toward the reactant side. C) Toward the product side. D) None of the above. Show Answer Correct Answer: C) Toward the product side. 21. Le Chatelier's Principle states that: A) When a chemical system is at equilibrium it is no longer possible to alter the system. B) When a chemical system at equilibrium is disturbed, the system shifts in order to minimize the effect. C) When a system at equilibrium is disturbed, a new equilibrium constant is established. D) A disturbing force must be applied to a system in order for it to reach equilibrium. Show Answer Correct Answer: B) When a chemical system at equilibrium is disturbed, the system shifts in order to minimize the effect. 22. An equilibrium constant with a large value, e.g. K$_{eq}$ = 1000, indicates ..... A) A very fast reaction. B) Mostly products at equilibrium. C) Mostly reactants at equilibrium. D) Nothing useful at all. Show Answer Correct Answer: B) Mostly products at equilibrium. 23. A decrease in temperature 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). 24. Species acting as both Bronsted acid and base is A) OH-. B) NH3. C) Na2CO3. D) (HSO$_{4}$) $^{-}$. Show Answer Correct Answer: D) (HSO$_{4}$) $^{-}$. 25. What does a steep slope in a solubility equilibrium graph indicate? A) Variable solubility. B) Low solubility. C) High solubility. D) No solubility. Show Answer Correct Answer: C) High solubility. 26. Who was the scientist who discussed changes in equilibrium? A) Bob. B) Le Chatelier. C) Goldberg. D) Newton. Show Answer Correct Answer: B) Le Chatelier. 27. What states of matter are omitted when writing K$_{eq }$expressions? A) Solids and liquids. B) Aqueous solutions and gas. C) Solids, liquids, aqueous solutions and gases. D) Aqueous solutions & liquids. Show Answer Correct Answer: A) Solids and liquids. 28. What happens to the solubility of a gas in a liquid if the temperature is increased? A) The solubility first increases then decreases. B) The solubility remains the same. C) The solubility increases. D) The solubility decreases. Show Answer Correct Answer: D) The solubility decreases. 29. In an equilibrium graph of a physical process, what does the area under the curve represent? A) Total volume. B) Total energy. C) Total mass. D) Total time. Show Answer Correct Answer: B) Total energy. 30. A sudden shortage of a good A) Free market. B) Supply shock. C) Rationing. D) Black market. Show Answer Correct Answer: B) Supply shock. 31. The first four dinner rolls Joan consumes have total utility of 15, 27, 37, and 45 respectively. What is the marginal utility of the 4th dinner roll? A) 124 units of utility. B) 8 units of utility. C) 45 units of utility. D) 11.25 units of utility. Show Answer Correct Answer: B) 8 units of utility. 32. Determine the expected numbers of organisms with genotype BB if the frequencies are as follows in a population with a total size of 150:f(BB)=0.16, f(Bb)=0.48, and f(bb)=0.36. A) 150. B) 24. C) 72. D) 54. Show Answer Correct Answer: B) 24. 33. Increase in temperature of the reactants can do one of the following A) Slow collision frequency. B) Allow less effective collision between the particles. C) Cause particles to lose speed. D) Increase collision between the particles thus increasing the rate. Show Answer Correct Answer: D) Increase collision between the particles thus increasing the rate. 34. 2A + 3B <$\rightarrow$ 2ABThe reverse reaction points towards the ..... A) Right. B) Up. C) Left. D) Down. Show Answer Correct Answer: C) Left. 35. Which of the following factors has no effect on the position of the chemical equilibrium for a reaction? A) Concentration. B) Pressure. C) Temperature. D) Catalyst. Show Answer Correct Answer: D) Catalyst. 36. A situation in which a minimum price is set is referred to as A) A price ceiling. B) A surplus. C) A shortage. D) A price floor. Show Answer Correct Answer: D) A price floor. 37. At equilibrium, rates of the forward and reverse reaction are ..... A) The same. B) Not the same. C) All the above. D) None of the above. Show Answer Correct Answer: A) The same. 38. 8 N to the left, and 4 N to the right. Find the net force. Is this balanced A) 4 N Left No. B) 4 N Left Yes. C) 12 N Right Yes. D) 12 N Right No. Show Answer Correct Answer: A) 4 N Left No. 39. What happens to K if a reaction is reversed? A) -K. B) 2K. C) K. D) K$^{2}$. Show Answer Correct Answer: C) K. 40. Decreasing the volume A) Shift towards the side with LESS moles. B) Shift towards the side with MORE moles. C) Speed up the reaction and shift the equilibrium. D) Speed up the reaction and NOT affect equilibrium. Show Answer Correct Answer: A) Shift towards the side with LESS moles. 41. PH of NaOH solution is 13. The amount of NaOH present in 400 ml of the aqueous solution is A) 16g. B) 1.6g. C) 4g. D) 8g. Show Answer Correct Answer: B) 1.6g. 42. "A point at which entire weight of object concentrated toward the earth" .Identify the concept explained in the statement above. A) Rigid body. B) Centre of gravity. C) Concurrent forces. D) Free body diagram. Show Answer Correct Answer: B) Centre of gravity. 43. A force of 5.0 N is applied at the end of a 0 N lever that has a length of 2.0 meters and is supported on the left end. If the force is applied directly perpendicular to the the lever on its right end, what is the magnitude of the torque acting the lever? A) 7.0 Nm. B) 2.5 N/m. C) 10. Nm. D) 3.0 Nm. Show Answer Correct Answer: C) 10. Nm. 44. Energy from the Sun travels to Earth as A) Insulation. B) Convection. C) Radiation. D) Conduction. Show Answer Correct Answer: C) Radiation. 45. "A body in motion at constant angular velocity will continue in motion at the same angular velocity, unless acted upon by some unbalanced external torque." A) 1st Law of Rotational Motion. B) Zeroth Law of Rotational Motion. C) 3rd Law of Rotational Motion. D) 2nd Law of Rotational Motion. Show Answer Correct Answer: A) 1st Law of Rotational Motion. 46. Which of the following is a conjugate acid/base pair? A) H$_{3}$O$^{+}$/OH$^{-}$. B) HCl/OCl$^{-}$. C) NH$_{4}$$^{+}$/NH$_{3}$. D) H$_{2}$SO$_{4}$/SO$_{4}$$^{2-}$. Show Answer Correct Answer: C) NH$_{4}$$^{+}$/NH$_{3}$. 47. In the context of Le Chatelier's principle, what is the effect of adding more reactants to a system at equilibrium? A) The reaction stops. B) The equilibrium shifts to the left. C) The equilibrium remains unchanged. D) The equilibrium shifts to the right. Show Answer Correct Answer: D) The equilibrium shifts to the right. 48. The displacement of a particle undergoing rectilinear motion along the X-axis is given by x = 2t$^{3}$-21 t$^{2}$+ 60t + 6 metersThe acceleration of the particle, when its velocity is zero, will be A) -9 m/s$^{2}$. B) -18 m/s$^{2}$. C) + 9 m/s$^{2}$. D) + 36 m/s$^{2}$. Show Answer Correct Answer: B) -18 m/s$^{2}$. 49. When Q is greater than K$_{c }$what will happen? A) The [Reactants] will increase and [Products] will decrease. B) The [Reactants] will decrease and [Products] will increase. C) The [Reactants] and [Products] will both increase. D) The [Reactants] and [Products] will both decrease. Show Answer Correct Answer: A) The [Reactants] will increase and [Products] will decrease. 50. In a solution prepared by adding excess PbI$_{2}$(s) [Ksp = 1.4 x 10$^{-8}$] to water, the [I-] at equilibrium is: A) 2.4 x 10$^{-3 }$mol/L. B) 1.2 x 10$^{-3 }$mol/L. C) 3.0 x 10$^{-3}$ mol/L. D) 1.5 x 10$^{-3 }$mol/L. Show Answer Correct Answer: C) 3.0 x 10$^{-3}$ mol/L. 51. Which one of the following activities does not apply the turning effect of a force? A) Swinging on a swing. B) Sliding down a slide. C) Moving up and down on the see-saw. D) Rowing a boat. Show Answer Correct Answer: B) Sliding down a slide. 52. If the price is set above the equilibrium it will lead to ..... A) Excess Demand. B) Excess Supply. C) Equilibrium. D) None of the above. Show Answer Correct Answer: B) Excess Supply. 53. Consider what "Ksp" means.Equilibrium can only be mathematically applied to chemical changes, but not physical changes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 54. If you place a hot cup of coffee on a cold kitchen counter, which process allows the coffee to cool down as it transfers heat to the counter? A) Insulation. B) Convection. C) Conduction. D) Radiation. Show Answer Correct Answer: C) Conduction. 55. Normative Economics shows A) Actual economic situation. B) Ideal economic situation. C) What is?. D) None of these. Show Answer Correct Answer: B) Ideal economic situation. 56. When you place an ice cube in a glass of warm water, how does the thermal energy transfer occur to reach thermal equilibrium? A) Through conduction only. B) Through convection only. C) Through radiation only. D) Through a combination of conduction and convection. Show Answer Correct Answer: D) Through a combination of conduction and convection. 57. What happens to the equilibrium constant $K_c$ A) $K_c$. B) $K_c$. C) $K_c$. D) $K_c$. Show Answer Correct Answer: A) $K_c$. 58. It is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. A) Reversible reaction. B) Synthesis. C) Decomposition reaction. D) Irreversible reaction. Show Answer Correct Answer: A) Reversible reaction. 59. Two objects have different temperatures. Object A has a temperature of 42 degrees and Object B is 37 degrees. Which direction should the energy transfer between Objects A and B? A) From Object A to Object B. B) From Object B to Object A. C) Energy will not transfer. D) Energy will transfer both directions. Show Answer Correct Answer: A) From Object A to Object B. 60. Given the reaction at equilibrium:A(g) + B(g) <=> A$_{2}$B$_{3}$(g) Which change will not affect the equilibrium concentrations of A(g), B(g), and A$_{2}$B$_{3}$(g)? A) Increasing the pressure. B) Adding a catalyst. C) Increasing the temperature. D) Adding more A(g). Show Answer Correct Answer: B) Adding a catalyst. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 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