This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part I > Class 12 Chemistry (Part I) Chapter 2 Solutions – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Solve:9x + 7-5x = 4x-7 A) Infinitely many solutions. B) No solutions. C) X =-7. D) X = 7. Show Answer Correct Answer: B) No solutions. 2. Solution that contains the maximum amount of solute that can be dissolved. A) Unsaturated solution. B) Supersaturated solution. C) Saturated solution. D) None of the above. Show Answer Correct Answer: C) Saturated solution. 3. A process that separates the parts of a mixture by vaporization and condensation A) Solubility. B) Solution. C) Distillation. D) Mixture. Show Answer Correct Answer: C) Distillation. 4. A binary solution contains A) Only 1 component. B) Only 2 solutes. C) Only one solvent and 1 solute. D) Only 2 solvents. Show Answer Correct Answer: C) Only one solvent and 1 solute. 5. If a solution is SATURATED, what does that mean? A) The solution cannot be stirred. B) No more solute can be dissolved. C) The solvent can no longer evaporate. D) More solute must be added. Show Answer Correct Answer: B) No more solute can be dissolved. 6. Low concentration of oxygen in the blood and tissues of people living at high altitude is due to ..... A) Low temperature. B) Low atmospheric pressure. C) High atmospheric pressure. D) Both low temperature and high atmospheric pressure. Show Answer Correct Answer: B) Low atmospheric pressure. 7. A student dissolves 20 grams of salt in a pan of 200 milliliters of water. The student places the pan over a hot stove. How much salt is left after all the water evaporates? A) There is no salt left because it evaporated with the water. B) 20 grams of salt is left after all the water evaporates. C) 10 grams of salt evaporates, leaving 10 grams in the pan. D) Neither the salt nor the water evaporates. Show Answer Correct Answer: B) 20 grams of salt is left after all the water evaporates. 8. Which is not an example of dissolving? A) Water in water. B) Copper sulfate in water. C) Sugar in water. D) Salt in water. Show Answer Correct Answer: A) Water in water. 9. When KCl (potassium chloride) is dissolved in water, how many particles are in solution for each unit? A) 1. B) 3. C) 2. D) 4. Show Answer Correct Answer: C) 2. 10. 4L of 0.02M aqueous solution of NaCl was diluted by adding one litre of water. The molarity of the resultant solution is A) 0.008. B) 0.016. C) 0.012. D) 0.004. Show Answer Correct Answer: B) 0.016. 11. In a solution of cholate powder and milk, what do we call to the MILK that dissolved the chocolate powder? A) Solute. B) Solvent. C) Mixture. D) None of the above. Show Answer Correct Answer: B) Solvent. 12. Why does a hot air balloon float in air? A) Air is less dense than water. B) The density of hot air is less than the density of cold air. C) Air is denser on cold days. D) The overall density of the balloon and its basket is less than the density of the air. Show Answer Correct Answer: D) The overall density of the balloon and its basket is less than the density of the air. 13. When water is added to a solution it is called a ..... A) Dissociation. B) Heterogeneous solution. C) Dilution. D) Concentration. Show Answer Correct Answer: C) Dilution. 14. A solution contains 25 g of a nonelectrolyte and 80 g of water. The water boils at 104.7$^\circ$ C and K$_{b}$ = 0.512$^\circ$ C/m. What is the molar mass of the nononelectrolyte? A) 28g/mol. B) 11g/mol. C) 46g/mol. D) 34g/mol. Show Answer Correct Answer: D) 34g/mol. 15. Pure water can be obtained from sea water by A) Sedimentation. B) Plasmolysis. C) Reverse osmosis. D) Centrifugation. Show Answer Correct Answer: C) Reverse osmosis. 16. Most substances can dissolve in water. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Some people add sugar to their hot tea. Which property of the sugar remains the same when the sugar is in the tea solution? (5.5C) A) The size of the sugar crystals. B) The taste of the sugar. C) The color of the sugar. D) The texture of the sugar. Show Answer Correct Answer: B) The taste of the sugar. 18. You know$^{}$$_{}$ that a substance has dissolved when it- A) Becomes a solid. B) Produces condensation and has water droplets. C) Spreads evenly throughout a liquid. D) None of the above. Show Answer Correct Answer: C) Spreads evenly throughout a liquid. 19. A beaker contains a mixture of salt, sand, gravel, and iron filings. Which substance is soluble in water? A) Sand. B) Iron filings. C) Salt. D) Gravel. Show Answer Correct Answer: C) Salt. 20. The material that dissolves in a solvent (salt) ..... A) Model. B) Reactant. C) Solute. D) None of the above. Show Answer Correct Answer: C) Solute. 21. Effect of temperature on solubility of gas in liquid A) Increases with decrease in temperature. B) Decreases with decrease in temperature. C) Remains constant. D) None of the above. Show Answer Correct Answer: A) Increases with decrease in temperature. 22. The smaller amount that is dissolved in a solution A) Solute. B) Solvent. C) Distillation. D) Alloy. Show Answer Correct Answer: A) Solute. 23. At room temperature, nitrogen, oxygen, and helium are examples of which type of matter? A) Liquid. B) Gas. C) Solid. D) Plasma. Show Answer Correct Answer: B) Gas. 24. A measure of volume A) Moles. B) Grams. C) Liters. D) Molarity. Show Answer Correct Answer: C) Liters. 25. ML of a solution is diluted to a final volume of 62.0 mL. The diluted solution has a concentration of 1.65 mol/L. What was the concentration of the original solution? A) 3.16 mol/L. B) 1.96 mol/L. C) 1.56 mol/L. D) 2.92 mol/L. Show Answer Correct Answer: D) 2.92 mol/L. 26. Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon ..... A) (iv) Nature of solvent. B) (iii) Pressure. C) (ii) Nature of solute. D) (i) Temperature. Show Answer Correct Answer: B) (iii) Pressure. 27. What is the solution to the following equation?4y-3 =-5y-21 A) Infinitely many solutions. B) No solution. C) One solution, y=-2. D) One solution, y=2. Show Answer Correct Answer: C) One solution, y=-2. 28. Select the true statement for the reversible reactionH$_{2}$O + H$_{2}$O <$\rightarrow$ H$_{3}$O+ + OH$^{-}$ A) Kw = [H$_{3}$O+] [OH$^{-}$]/(H$_{2}$O)$^{2}$. B) For distilled water at 25C, the [OH$^{-}$] = 1.0 x 10$^{7}$M. C) The product side is favored at 25 C. D) Represents the autoionization of water. Show Answer Correct Answer: D) Represents the autoionization of water. 29. If an electrical current can run through a solution, it is said to contain A) Magic. B) Nonelectrolytes. C) Electricity. D) Electrolytes. Show Answer Correct Answer: D) Electrolytes. 30. Calculate the number of moles of atoms in 4.6 g of sodium. A) 0.1. B) 0.4. C) 0.2. D) 0.3. Show Answer Correct Answer: C) 0.2. 31. One or more substances dissolve in another and cannot be easily separated. A) Dissolve. B) Solution. C) Mixture. D) Solute. Show Answer Correct Answer: B) Solution. 32. How many solutions does this equation have?6x-3 = 6x + 9 A) One Solution. B) No Solution. C) Many Solutions. D) None of the above. Show Answer Correct Answer: B) No Solution. 33. What is the mole fraction of ethanol when 0.504 mol of ethanol are mixed with 4.06 mol of water? A) 0.110. B) 0.124. C) 0.097. D) None of the above. Show Answer Correct Answer: A) 0.110. 34. Lemonade-Water, lemon juice, and sugarIdentify the solute A) Water. B) Lemon juice. C) Sugar and lemon juice. D) None of the above. Show Answer Correct Answer: C) Sugar and lemon juice. 35. The maximum concentration of solute that can be dissolved in a solvent. A) Homogeneous mixture. B) Solubility. C) Dissolve. D) Concentration. Show Answer Correct Answer: B) Solubility. 36. Is a fruit salad a mixture or a solution A) Mixture. B) Solution. C) All the above. D) None of the above. Show Answer Correct Answer: A) Mixture. 37. What is the dissociation factor (i.e. van't Hoff factor) for the compound Na$_{2}$SO$_{4}$? A) 5. B) 3. C) 7. D) 1. Show Answer Correct Answer: B) 3. 38. The separation of molecules into smaller ions (when dissolving) A) Saturated. B) Solvent. C) Dissociation. D) Miscible. Show Answer Correct Answer: C) Dissociation. 39. Diana found that a linear equation with one variable (the variable x) can be transformed into an equivalent equation. 3/4 = 3/4Determine if the equation has:one solution, no solutions, or infinitely many solutions. A) Infinitely Many Solutions. B) One Solution. C) No Solution. D) None of the above. Show Answer Correct Answer: A) Infinitely Many Solutions. 40. What is a nonelectrolyte? A) A substance that dissolves in water and produces ions. B) A substance that dissolves in water but doesn't produce ions. C) A substance that doesn't dissolve in water. D) A substance that vaporizes at room temperature. Show Answer Correct Answer: B) A substance that dissolves in water but doesn't produce ions. 41. If a solution has a very low concentration, it is called A) Dilute. B) Saturated. C) Neutralized. D) A suspension. Show Answer Correct Answer: A) Dilute. 42. The temperature at which a liquid becomes a gas A) Freezing point. B) Boiling point. C) Condensation point. D) Melting point. Show Answer Correct Answer: B) Boiling point. 43. 7x + 3 = 5(2x + 5)-(3x + 22) A) No Solution. B) One Solution. C) Infinite Solution. D) None of the above. Show Answer Correct Answer: C) Infinite Solution. 44. If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it? A) .188 M. B) .389 M. C) 1.76 M. D) 3.78 M. Show Answer Correct Answer: A) .188 M. 45. Can the solute particles be separated from the mixture A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 46. -7w + 4 =-3(w + 3)-2(w + 1) A) No Solution. B) One Solution. C) Infinite Solution. D) None of the above. Show Answer Correct Answer: B) One Solution. 47. 8z-22 = 3 ( 3z + 11)-z A) No Solution. B) One Solution. C) Infinite Solutions. D) None of the above. Show Answer Correct Answer: A) No Solution. 48. A metal solution is a(n) A) Colloid. B) Suspension. C) Alloy. D) Heterogeneous mixture. Show Answer Correct Answer: C) Alloy. 49. An unripe mango placed in a concentrated salt solution to prepare pickle, shrivels because ..... A) It loses water due to osmosis. B) It loses water due to reverse osmosis. C) It gains water due to reverse osmosis. D) It gains water due to osmosis. Show Answer Correct Answer: B) It loses water due to reverse osmosis. 50. What is the molality of 1.2 g of HCl in 750 g of solution? A) 0.04 m. B) 0.00004 m. C) 0.0016 m. D) None of the above. Show Answer Correct Answer: A) 0.04 m. 51. Two liquids that can dissolve into one another (mix). A) Miscible. B) Immiscible. C) Electrolyte. D) Nonelectrolyte. Show Answer Correct Answer: A) Miscible. 52. Which is the least concentrated solution? A) 10 g sugar in 100 ml water. B) 10 g sugar in 500 ml water. C) 20 g sugar in 100 ml water. D) 20 g sugar in 500 ml water. Show Answer Correct Answer: B) 10 g sugar in 500 ml water. 53. Matt is having a hard time figuring out what to write for the essay his English teacher assigned. The main conflict can best be described as individual vs.- A) Individual. B) Self. C) Society. D) Nature. Show Answer Correct Answer: B) Self. 54. What is the molarity of 2.5 mol of NaOH in 12.0 L of solution? A) 4.8 M. B) 30 M. C) 0.21 M. D) 20.8 M. Show Answer Correct Answer: C) 0.21 M. 55. According to Raoult's law, relative lowering of vapour pressure for a solution is equal to A) Moles of solute. B) Moles of solvent. C) Mole fraction of solute. D) Mole fraction of solvent. Show Answer Correct Answer: C) Mole fraction of solute. 56. Changing materials into different shapes or smaller pieces, by heating and cooling, and by melting and freezing. A) Solution. B) Physical change. C) Alloy. D) Solvent. Show Answer Correct Answer: B) Physical change. 57. A homogeneous mixture with the smallest particles that are invisible. A) Electrolyte. B) Colloid. C) Solution. D) Suspension. Show Answer Correct Answer: C) Solution. 58. The value of Henry's Constant for He, H$_{2}$, and O$_{2}$ are 144.97, 69.16, and 34.86 bar. The correct order of their solubility is A) He B) He C) O$_{2}$ D) H$_{2}$ Show Answer Correct Answer: A) He 59. What is the molar concentration of a solution when 100 mL water are used to dissolve 21g CuSO$_{4}$? A) 0.13 M. B) 1.6 M. C) 0.84 M. D) 0.013M. Show Answer Correct Answer: D) 0.013M. 60. Which of the following mixtures is an example of an ideal solution? A) Ethanol and water. B) Benzene and toluene. C) Acetone and chloroform. D) Water and oil. Show Answer Correct Answer: A) Ethanol and water. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part I) Chapter 2 Solutions Quiz 1Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 3Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 4Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 5Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 6Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 7Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 8Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books